Question

When 9.8 mol Fe react with 11.5 mol HCl, what is the limiting reactant and how many moles of H2 can be formed?

unbalanced equation: Fe + HCl yields FeCl3 + H2

Answer 1

HCl is the limiting reactant, and 3.83 mol H2 can be formed
Fe is the limiting reactant, and 4.90 mol H2 can be formed
HCl is the limiting reactant, and 5.75 mol H2 can be formed
Fe is the limiting reactant, and 14.7 mol H2 can be formed

Answer 2

@nincompoop

Answer 3

@SolomonZelman @Nnesha @dan815

Answer 4

Okay, first step is to write a balanced equation (or verify that the one you have is balanced). Can you do that?

Answer 5

Once you have the balanced equation, look at the ratio of Fe to HCl and compare it to the proportions you have for the reactants. If you need 2 moles of Fe for every mole of HCl, for example, Fe would be the limiting reactant because you do not have at least 2 moles of Fe for every mole of HCl.

Answer 6

When you know the limiting reactant, use the proportions in the equation to determine the number of moles of H2 produced in proportion to the number of of moles of limiting reactant.