Limiting Reagent

Question

Metallic silver can be prepared by the reaction of hydrogen gas on silver oxide.

Ag₂O + H₂  ⮕ 2Ag + H₂O

You react 16.7 g of Ag₂O with 3.20 g H₂?

a)     What is the limiting reagent?

b)   How many grams of Ag are produced?

Answer 1

More of the same. Learn to do these yourself.

Ag₂O + H₂ ==> 2Ag + H₂O

(a) Find limiting reactant

Find mols Ag₂O present and divide that by 1

Find mols H₂ present and divide that by 1

Whichever is less is the limiting reactant and thus, the other is in excess

(b) Use the mols of the limiting reactant and the stoichiometry (mol ratios) of the balanced equation to find mols of Ag formed. Multiply mols Ag by the atomic mass of Ag to find grams Ag.