Chapter 3, Problem 82QRT

(a)

Interpretation Introduction

Interpretation:

Molarity of sodium carbonate has to be calculated.

Concept Introduction:

Molar mass of a substance is the mass in grams of one mole of a substance.

  $No.ofmoles=\frac{Mass\times 1mol}{Molarmass}$

The Molarity of the solution can be calculated by using following formula

  $\text{Molarity of the solution}\text{=}\frac{\text{Number}\text{of}\text{moles}\text{of}\text{solute}}{\text{Volume}\text{of}\text{solution}\text{in}\text{litre}}$

(b)

Interpretation Introduction

Interpretation:

The concentration of ${\text{ Na}}^{\text{+}}{\text{ and CO}}_3^{2-}$ has be calculated.

Concept Introduction:

Refer to part (a).