Chapter 7, Problem 7.55E

Interpretation Introduction

Interpretation:

The milliliters of $0.120\text{M}$${\text{Na}}_2\text{S}$ solution required to react exactly with $35.0\text{mL}$ of $0.150\text{M}$${\text{AgNO}}_3$ solution is to be calculated.

Concept introduction:

Stoichiometry of a chemical species involved in a chemical reaction represents the amount of chemical species involved in the chemical reaction. The stoichiometry of a chemical species helps in calculating the expected mass of reactant and product. Stoichiometry of a chemical species is also represented in number of moles. The number of moles of a substance is given as,

$n=\frac{m}{M}$

Where,

• $m$ represents the mass of the substance.

• $M$ represents the molar mass of the substance.