H2O as a Gas

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Jose Robles 1D
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H2O as a Gas

Postby Jose Robles 1D » Sun Jan 26, 2020 7:37 pm

When producing an ICE table, what is done about H2O? Do we still exclude it even if it is a gas? (I'd think not, right?)

KarineKim2L
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Re: H2O as a Gas

Postby KarineKim2L » Sun Jan 26, 2020 7:42 pm

If H2O is a gas, we include it in the ice table. If it is a liquid, we do not include it in the ice table.

Jacob Puchalski 1G
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Re: H2O as a Gas

Postby Jacob Puchalski 1G » Sun Jan 26, 2020 7:43 pm

Yeah you'd include it if it was a gas.

saigorijavolu2k
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Re: H2O as a Gas

Postby saigorijavolu2k » Sun Jan 26, 2020 7:43 pm

Water is not used because it is a liquid. Pretend it is not there

Caroline Zepecki
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Re: H2O as a Gas

Postby Caroline Zepecki » Sun Jan 26, 2020 9:56 pm

you only include gasses and aq things in the chemical equilibrium equation. That being said, water as a gas is included.

Anna Heckler 2C
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Re: H2O as a Gas

Postby Anna Heckler 2C » Sun Jan 26, 2020 10:04 pm

Water is not included if it's in its liquid state because it is considered a solvent. If it is in its gaseous form, then it is included in calculations.

105311039
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Re: H2O as a Gas

Postby 105311039 » Sun Jan 26, 2020 10:08 pm

Within your ICE table, you should only include aq solutions and gases. If H2O is presented as a gas then you should still put it in the ICE table.

kendal mccarthy
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Re: H2O as a Gas

Postby kendal mccarthy » Sun Jan 26, 2020 11:32 pm

if h2o is a gas, you include it in the ICE table. You only don't include substances that have a set amount of space they take up like a solid or a liquid.

sarahartzell1A
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Re: H2O as a Gas

Postby sarahartzell1A » Sun Jan 26, 2020 11:49 pm

If it is a gas or aqueous you include it, but if not you do not.

CameronDis2K
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Re: H2O as a Gas

Postby CameronDis2K » Thu Jan 30, 2020 5:24 pm

In the ICE table, gases and aqueous (which is dissolved in H2O) solutions are included, not solids or liquids. Therefore, H2O (almost always a gas or liquid) is included only if its not a liquid.

Juana Abana 1G
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Re: H2O as a Gas

Postby Juana Abana 1G » Sun Feb 02, 2020 11:35 pm

Yes, you would include it if it was a gas.

Sean Tran 2K
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Re: H2O as a Gas

Postby Sean Tran 2K » Sun Feb 02, 2020 11:36 pm

Yes, include H2O as a gas, but not liquid.

WGaines_2E
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Re: H2O as a Gas

Postby WGaines_2E » Tue Mar 10, 2020 9:33 pm

H2O(g) is included but it is not as a liquid because it is a solvent

My-Lan Le 1L
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Re: H2O as a Gas

Postby My-Lan Le 1L » Wed Jan 06, 2021 12:09 pm

We would only exclude it if it is in a solid or liquid form. However, if it is a gas, we would include it in the table.

Jonathan Batac - 2D
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Re: H2O as a Gas

Postby Jonathan Batac - 2D » Wed Jan 06, 2021 2:20 pm

If H20 was a pure substance in the reaction (either a liquid or solid) it should not be included. But as a gas (water vapor), always include it in the ICE table.

Chem_Mod
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Re: H2O as a Gas

Postby Chem_Mod » Wed Jan 06, 2021 2:24 pm

The main thing to remember here is whether the H2O is being used in the reaction or is just passive as a solvent. Most of the times when it is present as a gas, that is being formed as a product or is reacting as a reactant. When it is a liquid it is usually used as a solvent, so it is not involved in the reaction and is thus not used in the equilibrium calculations.

alebenavides
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Re: H2O as a Gas

Postby alebenavides » Sat Jan 09, 2021 10:18 am

it's included if its a gas !

Catherine Bubser 2C
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Re: H2O as a Gas

Postby Catherine Bubser 2C » Sat Jan 09, 2021 6:23 pm

We would have to be given the state of H20 in the reaction, correct?

Rich Luong 1D
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Re: H2O as a Gas

Postby Rich Luong 1D » Sat Jan 09, 2021 8:09 pm

Only when something is a solid or liquid will it not be included. For gaseous reactants/products, always include them!

Juliana Rosales 1H
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Re: H2O as a Gas

Postby Juliana Rosales 1H » Sun Jan 10, 2021 10:10 pm

It depends on the state that it is in. Wether it is a gas or a liquid.

Kyle_Lee_2B
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Re: H2O as a Gas

Postby Kyle_Lee_2B » Sun Jan 10, 2021 10:12 pm

We do not use H2O if it is a liquid, but do use H2O if it is a gas in an equilibrium constant question

Mansi Solanki 3A
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Re: H2O as a Gas

Postby Mansi Solanki 3A » Sun Jan 10, 2021 10:14 pm

H2O in the gas state would be included in the ICE table while it would not be included while it is in the liquid form because then it would be considered a solvent.

Pierce Newman 1A
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Re: H2O as a Gas

Postby Pierce Newman 1A » Mon Jan 11, 2021 1:15 pm

because concentrations of liquids cannot change, liquid water is never considered for equilibrium. water's concentration as a gas can change so it would be considered and included in ICE table

Jordan Tatang 3L
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Re: H2O as a Gas

Postby Jordan Tatang 3L » Mon Jan 11, 2021 1:36 pm

As a general rule don't include solids and/or liquids.

Andy Hon 3E
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Re: H2O as a Gas

Postby Andy Hon 3E » Mon Jan 11, 2021 11:52 pm

When water is considered a liquid (essentially the solvent in the equation), the concentration of liquids does not change significantly to say it has changed in cc. However, when water is considered a gas, it is variable and can change.

Chris 1C
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Re: H2O as a Gas

Postby Chris 1C » Mon Jan 11, 2021 11:56 pm

Always exclude solids/liquids. Water as a liquid should not be in the equation, but water as a gas should.

austin-3b
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Re: H2O as a Gas

Postby austin-3b » Tue Jan 12, 2021 12:06 am

Normally, you would exclude it. But if it's a gas, you put it in the ICE Table. Anything that isn't a solid or liquid is included.

Juwan_Madaki_3K
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Re: H2O as a Gas

Postby Juwan_Madaki_3K » Thu Jan 14, 2021 9:34 am

H2O would still be included as a gas. When it's a liquid/solvent, then we wouldn't include it.

Anna Yang 1A
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Re: H2O as a Gas

Postby Anna Yang 1A » Thu Jan 14, 2021 9:44 am

Liquids and solids are not included because liquids tend to be in excess and remain virtually unchanged (and therefore cancel out in the numerator and denominator when calculating K) and solids don't have a concentration. Gases are included, and therefore H2O as a gas counts.

Chloe Shamtob 2H
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Re: H2O as a Gas

Postby Chloe Shamtob 2H » Thu Jan 14, 2021 9:59 am

If H2O is shown as a gas, you do not omit it from your ice table. It H2O is a liquid and is used as a solvent, you would not include it because it is in excess and the concentration of H2O does not change in the reaction.

Jiayi Wu 3J
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Re: H2O as a Gas

Postby Jiayi Wu 3J » Thu Jan 14, 2021 11:43 am

The basic rule is: excluding all solids and liquids (solvent). H2O can be a part of the equation as long as it is not solid or liquid.

AmyHo2K
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Re: H2O as a Gas

Postby AmyHo2K » Thu Jan 14, 2021 7:27 pm

We don't exclude H20 when it's a gas. We only exclude it when it's a liquid or solid.

Crystal Pan 2G
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Re: H2O as a Gas

Postby Crystal Pan 2G » Thu Jan 14, 2021 10:14 pm

We do not exclude any gases. We will only exclude H2O when it is in liquid form. All liquids and solids are excluded because they do not have concentration. All gases and aqueous solutions will be included in the equilibrium constant/expression.

Simer_Shera_2D
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Re: H2O as a Gas

Postby Simer_Shera_2D » Thu Jan 14, 2021 10:36 pm

Although we've typically seen it in its liquid form and do not use it, if H2O is present as a gas, then use it in the equilibrium calculation.

Victoria Dao 3G
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Re: H2O as a Gas

Postby Victoria Dao 3G » Thu Jan 14, 2021 11:29 pm

Hi! The rule is that in general, gases are always included no matter which molecule, and liquids and solids should always be excluded no matter which molecule. Even though H2O may typically be seen in its liquid form, if its in a gas form it should be included.

Margaret Xu 3C
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Re: H2O as a Gas

Postby Margaret Xu 3C » Fri Jan 15, 2021 2:45 am

We don't include solids or liquids when solving ICE tables. When water is a gas, I believe we include it in the ICE table because the partial pressure of the gas will affect the overall equilibrium. Please correct me if I'm wrong!

Aditya Sundaram 3D
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Re: H2O as a Gas

Postby Aditya Sundaram 3D » Fri Jan 15, 2021 4:42 am

Water would only be on the table if it was in its gaseous state.

Jason Knight - 1F
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Re: H2O as a Gas

Postby Jason Knight - 1F » Fri Jan 15, 2021 8:31 am

We would only include H20 in our I.C.E. table if H20 is labeled in the gaseous state in the reaction. As a reminder, liquids and solids are not included in the ICE table.

Samudrala_Vaishnavi 3A
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Re: H2O as a Gas

Postby Samudrala_Vaishnavi 3A » Fri Jan 15, 2021 5:18 pm

Generally, you would include it if it was a gas and if it is NOT a solvent (meaning it is on both sides of the equation since (aq) means something + H2O).

Brenda Silva 1B
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Re: H2O as a Gas

Postby Brenda Silva 1B » Fri Jan 15, 2021 5:57 pm

We would need to include H2O in the ICE table if it is a gas but would not be included if it's in a liquid state.

Kaili Valenzuela 2B
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Re: H2O as a Gas

Postby Kaili Valenzuela 2B » Fri Jan 15, 2021 6:47 pm

We do not include any substance that is in a liquid or solid state. We only include gases and aqueous states, so in this case we would include H20 only if it was a gas.

chinmayeec 2H
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Re: H2O as a Gas

Postby chinmayeec 2H » Fri Jan 15, 2021 6:58 pm

If H2O is acting a solvent, then they are not included in the ICE table since the concentration doesn't change from reactant to product. If H2O is in its gas phase, then it is included in the ICE table.

Shalyn Kelly 3H
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Re: H2O as a Gas

Postby Shalyn Kelly 3H » Fri Jan 15, 2021 7:32 pm

As stated above, you'd include water if in its gaseous state (as ICE uses aqueous and gases), but not if it was presented as a liquid (ICE doesn't include solvents or solids).

gabbi_r2C
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Re: H2O as a Gas

Postby gabbi_r2C » Fri Jan 15, 2021 7:37 pm

I agree with the previous responses. As a gas, H2O is not a solvent and thus has a measurable concentration change, so it must be included in the ICE table.

Tanner Bartyczak 1K
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Re: H2O as a Gas

Postby Tanner Bartyczak 1K » Sat Jan 16, 2021 1:16 am

Water would be included if it was in a gaseous form.

Nina Fukui 2J
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Re: H2O as a Gas

Postby Nina Fukui 2J » Sat Jan 16, 2021 6:57 am

only included when water is in its gas state!

Anusha Chaudhary 1J
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Re: H2O as a Gas

Postby Anusha Chaudhary 1J » Sat Jan 16, 2021 10:07 am

If water is in the gas phase, then you should include it. But if it is a liquid or solid, then you leave it out.

Emma_Barrall_3J
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Re: H2O as a Gas

Postby Emma_Barrall_3J » Sat Jan 16, 2021 10:11 am

Include H2O in your K equation if it is g or aq :)

Navdha Sharma 3J
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Re: H2O as a Gas

Postby Navdha Sharma 3J » Sat Jan 16, 2021 10:29 am

If H2O is a gas, you should include it in the ICE table!

Jasmine Yi 1G
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Re: H2O as a Gas

Postby Jasmine Yi 1G » Sat Jan 16, 2021 9:01 pm

Yeah, if H2O is a gas, then it's included in the ICE table and all other calculations. But if it is in any other state, then it is excluded.

Inderpal Singh 2L
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Re: H2O as a Gas

Postby Inderpal Singh 2L » Sat Jan 16, 2021 9:05 pm

Make sure to include H2O if it is a gas!

Mingzi Yang 1E
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Re: H2O as a Gas

Postby Mingzi Yang 1E » Sat Jan 16, 2021 11:20 pm

If H2O is a gas, it should be included in the ICE table. If it is a liquid, we don't include it.

Karen Elrayes 1L
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Re: H2O as a Gas

Postby Karen Elrayes 1L » Sun Jan 17, 2021 2:12 am

We only exclude solids and liquids. We usually exclude H2O because it is almost always the solvent, but since it is a gas it will be involved in the reaction and is, therefore, include in the k constant.

David Jen 1J
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Re: H2O as a Gas

Postby David Jen 1J » Sun Jan 17, 2021 2:31 am

We include gases, except for inert gases.

apurva-3E
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Re: H2O as a Gas

Postby apurva-3E » Sun Jan 24, 2021 7:22 pm

If it is a gas, we would include it in the ICE table.

Simran Bains 2C
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Re: H2O as a Gas

Postby Simran Bains 2C » Sun Jan 24, 2021 7:35 pm

If it is a gas, we would include it.

Bryan Le 2K
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Re: H2O as a Gas

Postby Bryan Le 2K » Sun Jan 24, 2021 7:52 pm

You include H2O in the ice table only if it is a gas. If it is a liquid then we wouldn't include it.

Edison Tham 3D
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Re: H2O as a Gas

Postby Edison Tham 3D » Sun Jan 24, 2021 7:58 pm

Since H2O would be in its gaseous form, we will include it in our reaction (since it's not in solid or liquid form, which we will not include).

Joshua Chung 2D
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Re: H2O as a Gas

Postby Joshua Chung 2D » Sun Jan 24, 2021 9:08 pm

If it is a gas, then we include it. If it is in liquid form (as is in most chemical equations dealt with so far), then we exclude it.

305405193
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Re: H2O as a Gas

Postby 305405193 » Sun Jan 24, 2021 10:29 pm

Just as previous replies have stated you would only include H2O in the reaction is it were a gas, not a liquid since liquids are never included.

Armen_Isayan_2L
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Re: H2O as a Gas

Postby Armen_Isayan_2L » Sun Jan 24, 2021 10:50 pm

Hello! It is crucial to remember that when you are completing your ICE box that you include only aqueous solutions and ages. Hence, if H2O is expressed to be. a gas, then you should include it in the ICE box, however, if it was not, you would not include it.

emwoodc
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Re: H2O as a Gas

Postby emwoodc » Sun Jan 24, 2021 10:55 pm

when forming the ICE table it's important to remember that we don't include anything in the solid and liquid form! we definitely include it when it's a gas or aqueous. So for H2O, we would include it if it was a gas!

Aydin Karatas 1F
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Re: H2O as a Gas

Postby Aydin Karatas 1F » Sun Jan 24, 2021 10:57 pm

When water is the solvent, it's ignored. When it is involved in the reaction (ex. being in gas form), it is included in calculations.

Aanya Tanti 3C
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Re: H2O as a Gas

Postby Aanya Tanti 3C » Sun Jan 24, 2021 10:58 pm

H20 as a liquid is excluded as in an aqueous environment there is a surplus of water in both reactants and products. As a gas, include it in ICE tables.

Adrienne Chan 1G
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Re: H2O as a Gas

Postby Adrienne Chan 1G » Sun Jan 24, 2021 11:19 pm

It depends what phase it's in. If it's a liquid we ignore it, but if it's aqueous then we do count it.

Amanda Bueno-Kling
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Re: H2O as a Gas

Postby Amanda Bueno-Kling » Sun Jan 24, 2021 11:21 pm

Do we ignore both aqueous and liquid and only consider it when it is a gas?

LeahSWM 2E
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Re: H2O as a Gas

Postby LeahSWM 2E » Sun Jan 24, 2021 11:27 pm

You would only include H2O if it is in a aqueous phase, not when it is in the liquid phase.

Mariah Disc 2C
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Re: H2O as a Gas

Postby Mariah Disc 2C » Sun Jan 24, 2021 11:30 pm

It is only ignored if it is a liquid.

Sejal Parsi 3K
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Re: H2O as a Gas

Postby Sejal Parsi 3K » Sun Jan 24, 2021 11:33 pm

Because it is a gas, you would include it.

Nick Saeedi 1I
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Re: H2O as a Gas

Postby Nick Saeedi 1I » Mon Jan 25, 2021 5:23 pm

if it is a gas it is included.


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