H2O as a Gas

[Jose Robles 1D]

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]

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]

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

[saigorijavolu2k]

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

[Caroline Zepecki]

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

[Anna Heckler 2C]

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]

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]

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]

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

[CameronDis2K]

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]

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

[Sean Tran 2K]

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

[WGaines_2E]

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

[My-Lan Le 1L]

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]

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]

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]

it's included if its a gas !

[Catherine Bubser 2C]

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

[Rich Luong 1D]

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

[Juliana Rosales 1H]

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

[Kyle_Lee_2B]

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]

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]

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]

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

[Andy Hon 3E]

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]

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

[austin-3b]

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]

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

[Anna Yang 1A]

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]

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]

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]

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

[Crystal Pan 2G]

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]

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]

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]

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]

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

[Jason Knight - 1F]

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]

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]

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]

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]

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]

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]

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]

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

[Nina Fukui 2J]

only included when water is in its gas state!

[Anusha Chaudhary 1J]

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]

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

[Navdha Sharma 3J]

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

[Jasmine Yi 1G]

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]

Make sure to include H2O if it is a gas!

[Mingzi Yang 1E]

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]

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]

We include gases, except for inert gases.

[apurva-3E]

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

[Simran Bains 2C]

If it is a gas, we would include it.

[Bryan Le 2K]

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]

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]

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]

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]

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]

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]

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]

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]

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]

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

[LeahSWM 2E]

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

[Mariah Disc 2C]

It is only ignored if it is a liquid.

[Sejal Parsi 3K]

Because it is a gas, you would include it.

[Nick Saeedi 1I]

if it is a gas it is included.