Limiting reagents

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Hanniel U 2B
Posts: 76
Joined: Fri Sep 28, 2018 12:16 am

Limiting reagents

Postby Hanniel U 2B » Mon Oct 01, 2018 11:56 am

I watched the video but I'm still not sure. Can a chemical equation have two limiting reagents ?

Matthew D 3F
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Joined: Fri Apr 06, 2018 11:02 am

Re: Limiting reagents

Postby Matthew D 3F » Mon Oct 01, 2018 12:08 pm

A two step chemical reaction can have two limiting reactants, one for each step, but a single step chemical reaction can only have one limiting reactant.

Jessica Helfond 2F
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Joined: Fri Sep 28, 2018 12:16 am

Re: Limiting reagents

Postby Jessica Helfond 2F » Mon Oct 01, 2018 12:54 pm

A one step chemical reaction can only have one limiting reagent because (as long as the 2 reactants are present in different amounts and/or you need different amounts for the reaction) you will run out of one first. Therefore, the reaction will not be able to continue because you will be out of one of the reactants you need for the reaction. The one you run out of is the limiting reactant, while you still have some of the other reactant left over.

Lia Inadomi 1I
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Joined: Fri Sep 28, 2018 12:15 am

Re: Limiting reagents

Postby Lia Inadomi 1I » Mon Oct 01, 2018 2:41 pm

Is it possible that two reagents get used up at the same time so that an equation can have two limiting reactants?

Reese - Dis 1G
Posts: 31
Joined: Fri Sep 28, 2018 12:15 am

Re: Limiting reagents

Postby Reese - Dis 1G » Mon Oct 01, 2018 3:06 pm

You can only have one limiting reactant because it limits what product can be produced, so it is not possible to have more than one.

AlyssaBei_1F
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Joined: Fri Sep 28, 2018 12:17 am

Re: Limiting reagents

Postby AlyssaBei_1F » Mon Oct 01, 2018 3:49 pm

The limiting reagent is the reactant that gets used up first in a chemical reaction. It determines how much product is produced. There cannot be two limiting reagents because once one reactant is used up the reaction cannot continue.

Hanniel U 2B
Posts: 76
Joined: Fri Sep 28, 2018 12:16 am

Re: Limiting reagents

Postby Hanniel U 2B » Fri Oct 05, 2018 9:36 am

Okay but during the post assessment, I answered that it cannot have two limiting reactants but the answer was wrong. That's why I'm confused.

sophiebillings1E
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Joined: Fri Sep 28, 2018 12:27 am

Re: Limiting reagents

Postby sophiebillings1E » Fri Oct 05, 2018 3:56 pm

There is only one limiting reactant in a single step chemical reaction. If the moles are the same for all reactants none of them are limiting the others' potential to create more product. Thus, there is a perfect amount of reactant to fully react with the others in order to form product.

Elizabeth Kim 4E
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Joined: Fri Sep 28, 2018 12:29 am

Re: Limiting reagents

Postby Elizabeth Kim 4E » Fri Oct 05, 2018 5:25 pm

There cannot be two limiting reactants, because only one can do the limiting to the other. However, there can be no limiting reactants in which the mole ratio for the reactants are equal.

michelle
Posts: 62
Joined: Fri Sep 28, 2018 12:23 am

Re: Limiting reagents

Postby michelle » Fri Oct 05, 2018 11:06 pm

In one step-reactions, there will only be one limiting reactant. It is possible that all the substance involved in a reaction is completely consumed, in which there are no limiting reagents or all the reactants are limiting.

LG2019
Posts: 60
Joined: Fri Sep 28, 2018 12:27 am

Re: Limiting reagents

Postby LG2019 » Fri Oct 05, 2018 11:13 pm

There cannot be more than one limiting reactant. There is no limiting reactant if both substances are completely used up.

Grace Diaz 3F
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Joined: Fri Sep 28, 2018 12:24 am

Re: Limiting reagents

Postby Grace Diaz 3F » Sun Oct 07, 2018 3:34 pm

There can only be one limiting reagent in a reaction. Since the limiting reagent determines the amount of product that can be created, once it has been used it would not make sense that another reactant could limit an already determined product.

Ronald Thompson 1F
Posts: 59
Joined: Fri Sep 28, 2018 12:25 am

Re: Limiting reagents

Postby Ronald Thompson 1F » Sun Oct 07, 2018 3:49 pm

Yes there can be more than one depending on each step of the reaction


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