Chapter 17, Problem 17.130MP

(a)

Interpretation Introduction

Interpretation:

The balanced equation for the overall cell reaction has to be written.

(b)

Interpretation Introduction

Interpretation:

The amount of adiponitrile (in kilograms) that will be obtained when acrylonitrile will be electrolytically reduced to adiponitrile at given time and current has to be calculated.

Concept Introduction:

Moles of Electrons:

The charge on one mole of electrons is $\text{96,500}\text{C,}$ and the number of moles of electrons passed through the cell is calculated as,

$\text{Moles}\text{of}{\text{e}}^{\text{-}}\text{=}\text{Charge(C)×}\frac{\text{1}\text{mole}{\text{e}}^{\text{-}}}{\text{96,500}\text{C}}$

Mass of Substance:

The mass of a substance is calculated from the moles of electrons and atomic weight of the substance.  Using the conversion factors, the mass of substance is calculated from the formula shown below,

$\text{Mass}\text{=}\text{calculated}\text{mole}{\text{e}}^{\text{-}}\text{×}\frac{\text{1}\text{mole}\text{Cu}}{\text{n}\text{mole}{\text{e}}^{\text{-}}}\text{×}\frac{\text{Atomic weight of substance(in g)}}{\text{1}\text{mole}\text{ofsubstance}}\text{×}\frac{\text{1}\text{kg}}{\text{1000}\text{g}}$

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

Figure 1

(c)

Interpretation Introduction

Interpretation:

The quantity (in litres) of Oxygen at $\text{740}\text{mm}\text{Hg}$ and $\text{25°C}$ that is obtained as by product has to be given.

Concept Introduction:

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

Figure 1