Chapter 17, Problem 17.104SP

Interpretation Introduction

Interpretation:

The amount of silver (in grams) that will be obtained when an aqueous solution of silver nitrate is electrolysed at given time and current has to be calculated.

Concept Introduction:

The mass of a substance is calculated from the constant current and the time duration of the reaction.  Conversion factors are used along with the atomic weight of the substance.  The general formula for obtaining the mass using the conversion factor is given as,

$\text{Mass}\text{=}\text{Current×time(in min)×}\frac{\text{60s}}{\text{1min}}\text{×}\frac{\text{1}\text{mole}{\text{e}}^{\text{-}}}{\text{96,500C}}\text{×}\frac{\text{1}\text{mole}\text{of}\text{substance}}{\text{n}\text{mole}{\text{e}}^{\text{-}}}\text{×}\frac{\text{Atomic}\text{weight}}{\text{1}\text{mole}\text{of}\text{substance}}$

The flow chart below is useful in the calculation of grams or litres of the product.

Figure 1