Chapter 8, Problem 8.31QP

(a)

Interpretation Introduction

Interpretation:

The balanced chemical equation and the mass of ${\text{NaHCO}}_{\text{3}}$ required to produce 20.5g ${\text{CO}}_{\text{2}}$ are needed to be determined for the decomposition reaction of ${\text{NaHCO}}_{\text{3}}$.

Concept introduction:

• Balanced chemical equation of a reaction is written according to law of conservation of mass.
• Number of moles of a substance, from its given mass is,

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

• Mole ratios between the reactants of a reaction are depends upon the coefficients of respective reactant in a balanced chemical equation.

(b)

Interpretation Introduction

Interpretation:

The balanced chemical equation and the mass of ${\text{NaHCO}}_{\text{3}}$ required to produce 20.5g ${\text{CO}}_{\text{2}}$ are needed to be determined for the decomposition reaction of ${\text{NaHCO}}_{\text{3}}$.

Concept introduction:

• Balanced chemical equation of a reaction is written according to law of conservation of mass.
• Number of moles of a substance, from its given mass is,

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

• Mole ratios between the reactants of a reaction are depends upon the coefficients of respective reactant in a balanced chemical equation.