Chapter 3, Problem 3.51P

Interpretation Introduction

Interpretation: Maximum moles and mass in grams of ${\text{H}}_{\text{2}}\text{S}$ formed along with mass of the excess reactant remains in the reaction of aluminum sulfide with water is to be calculated.

Concept introduction: The formula to convert mass in grams to moles is as follows:

  $\text{Number of moles}=\frac{\text{Given mass}}{\text{molar mass}}$

For some stoichiometric balanced equation; reactant that is present in the smallest amount is consumed completely to form the product and thus governs the product formation.This reactant is known as limiting reactant.On the basis of the stoichiometric ratio by which substrates combine, the moles of product formed from each reactant can be calculated.