Chapter 6, Problem 6.45AP

Interpretation Introduction

Interpretation:

The number of moles of ${\text{H}}_2{\text{SO}}_2$ produced has to be determined in kilogram unit.

Concept introduction:

Mole:

A mole is corresponds to the mass of a substance that contains $\text{6}{\text{.023×10}}^{\text{23}}$ particles of the substance.

The mole is the SI units for the amount of a substance and its symbol is mol.

1 mole of carbon -12 has a mass of 12 gram and it contains

$\text{6}{\text{.022140857 x 10}}^{\text{23}}\text{ of carbon atoms}$

So, $\text{1mole = 6}{\text{.023×10}}^{\text{23}}\text{molecules}$

Mass of the substance = $\text{number of moles × mol wt}$

Or

$\text{Number}\text{of}\text{mole}\text{=}\frac{\text{Given}\text{mass}\text{of}\text{the}\text{substance}}{\text{Molar}\text{mass}}$