Question

Hydrochloric acid reacts with calcium to form hydrogen and calcium chloride.
If 100 grams of hydrochloric acid reacts with 100 grams of calcium, what is the limiting reactant?

2HCl + Ca → CaCl2 + H2

calcium

hydrogen

calcium chloride

hydrochloric acid

Answer 1

medals to whoever answers first need answer fast

Answer 2

What do u think the answer is ?

Answer 3

First of all we can cut off cacl2 and H2 because they aren't reactants. Those are the products. So we are left with Ca and HCl
then we have to find the no. of moles of each reactants
moles = mass divided by molar mass
molar mass of HCl = 36.5gmol^-1
Molar mass of Ca = 40gmol^-1
We know the masses 100g each

find the moles of each
Moles of Ca = 100/40 = 2.5moles
moles of Ca = 100/36.5 = 2.7 moles
Anyways according to the reaction u need more HCl to make sure than u finish Ca.
The stoicheometry of HCl : Ca = 2:1
So the limitting agent is the insufficient one that is HCl