Do you know what happens???

Question

Given the reaction Zn 2HCL ---> ZnCl2 H2 if 2.0 moles of Zn and 5.0 mol of HCL are allowed to react???

what happens is Zn the limiting reagent

or Hcl the limiting reagent

or 1.0 mol of ZnCl2 is produced

or 5.0 moles of H2 is produced

Answer 1

Look at the balanced equation-

Zn + 2 HCl --> ZnCl2 + H2

In words it says-

1 molecule of Zn reacts with 2 molecules of HCl to produce 1 molecule of ZnCl2 and 1 molecule of H2.

You started with 2 mol Zn so you need 4 mol HCl

You have 5 mol HCl so HCl is in excess and Zn is the limiting reactant.

2 mol ZnCl2 will be produced

2 mol H2 will be produced

Answer 2

Zn is the limiting reactant.

Answer 3

from a mass balance review of the reaction one can see that Zn is the limiting reagent.

2 moles of ZnCl2 are produced

2 moles f H2 are prduced

1 mole of HCl is left unreacted

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