## Limiting Reactants

Jonathan Marcial Dis 1K
Posts: 36
Joined: Fri Apr 06, 2018 11:03 am

### Limiting Reactants

When determining the amounts in limiting reactants of a molecule, do we multiply 1 mole of that atom by the stoichiometric coefficient in the balanced equation? for example in CaC2 + 2 H2O -> Ca(OH)2 + C2H2 do we multiply the moles of CaC2 by 2 because of the 2 moles of hydrogen?

Jose Munoz 1D
Posts: 22
Joined: Tue Nov 14, 2017 3:00 am

### Re: Limiting Reactants

I believe that you multiply by the ratio, so your assumption is right.

Chem_Mod
Posts: 18400
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 435 times

### Re: Limiting Reactants

I am not quite understanding your question, but to determine the limiting reactant you do need to take account of the stoichiometric relation of a balanced equation of interest.

204917020
Posts: 31
Joined: Fri Apr 06, 2018 11:05 am

### Re: Limiting Reactants

I'm not sure I understand your question, but to determine limiting reactant you can convert the grams of both reactants to moles of the same product, the reactant that results in the lesser moles of product will determine how much product is made and is therefore your limiting reactant.

105012653 1F
Posts: 30
Joined: Fri Apr 06, 2018 11:02 am

### Re: Limiting Reactants

Also confused on this

Salena Chowdri 1I
Posts: 66
Joined: Fri Apr 06, 2018 11:02 am

### Re: Limiting Reactants

If you want to find the limiting reactant of this question, you would first need to calculate the number of moles present of each reactant (by using the molar mass and given mass). Then use the ratio of 1 mole of CaC2: 2 moles of H2O to deduce which of the reactants is actually present in excess.

### Who is online

Users browsing this forum: No registered users and 1 guest