Question

if we mix equal masses of glucose and water the mole fraction of glucose will be ?

Answer 1

Answer: Mole fraction of glucose is 0.09.

Explanation:

Mole fraction is the ratio of moles of a particular component to the total number of moles.

tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex]

$\text{Number of moles of glucose}=\frac{xg}{180g/mol}=0.0056xmoles$

$\text{Number of moles of water}=\frac{xg}{18g/mol}=0.056xmoles$

$\text {mole fraction of glucose}}=\frac{\text {moles of glucose}}{\text {moles of glucose+moles of water}}=\frac{0.0056x}{0.0056x+0.056x}=\frac{0.0056x}{0.0616x}=0.09$

$\text {mole fraction of water}=\frac{\text {moles of water}}{\text {moles of glucose+moles of water}}=\frac{0.056x}{0.0056x+0.056x}=\frac{0.056x}{0.0616x}=0.91$

Thus mole fraction of glucose is 0.09.