Chapter 10, Problem 127A

Interpretation Introduction

Interpretation:

Among the following compounds, the compound which contains more carbon atoms per mole should be determined with an explanation.

${\text{C}}_{\text{6}}{\text{H}}_{\text{8}}{\text{O}}_{\text{6}}$ (Ascorbic acid)

${\text{C}}_3{\text{H}}_{\text{8}}{\text{O}}_3$ (Glycerin)

${\text{C}}_8{\text{H}}_{\text{8}}{\text{O}}_3$ (Vanillin)

Concept introduction:

The number of moles of a compound is defined as the ratio of the given mass of the compound to the molar or molecular mass of the compound.

The mathematical expression is given by:

Number of moles = $\frac{\text{given mass of the compound}}{\text{molar mass of the compound}}$

The one mole of any substance is equal to the Avogadro number i.e. $6.022\times {10}^{23}$ atoms.

Answer to Problem 127A

Vanillin contains more number of moles of carbon atom in comparison to glycerin and ascorbic acid.

Explanation of Solution

Given compounds are:

${\text{C}}_{\text{6}}{\text{H}}_{\text{8}}{\text{O}}_{\text{6}}$ (Ascorbic acid)

${\text{C}}_3{\text{H}}_{\text{8}}{\text{O}}_3$ (Glycerin)

${\text{C}}_8{\text{H}}_{\text{8}}{\text{O}}_3$ (Vanillin)

For ${\text{C}}_{\text{6}}{\text{H}}_{\text{8}}{\text{O}}_{\text{6}}$ (Ascorbic acid),

Number of carbon atoms = 6

Thus, for every mole of ascorbic acid, the number of moles of carbon atoms = 6 moles.

For ${\text{C}}_3{\text{H}}_{\text{8}}{\text{O}}_3$ (Glycerin),

Number of carbon atoms = 3

Thus, for every mole of glycerin, the number of moles of carbon atoms = 3 moles.

For ${\text{C}}_8{\text{H}}_{\text{8}}{\text{O}}_3$ (Vanillin)

Number of carbon atoms = 8

Thus, for every mole of vanillin, the number of moles of carbon atoms = 8 moles.

Hence, vanillin contains more number of moles of carbon atom in comparison to glycerin and ascorbic acid.