Question

3.65 g of HCl is dissolved in 16.2 g of water. The mole fraction of HCl in the resulting solution is

Answer 1

Answer: The mole fraction of HCl in the resulting solution is 0.1

Explanation: Mole fraction is defined as the ratio of moles of a particular substance to the total moles of mixture.

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\textMolar mass}}$

$\text{Number of moles of HCl}=\frac{3.65g}{36.5g/mol}=0.1 moles$

$\text{Number of moles of water}=\frac{16.2g}{18g/mol}=0.9moles$

$\text{Mole fraction of HCl}=\frac{\text{Moles of HCl}}{\text{Moles of water}+\text{Moles of }HCl}$

$\text{Mole fraction of HCl}=\frac{0.1}{0.9+0.1}=0.1$

Thus mole fraction of HCl in the resulting solution is 0.1

Answer 2

Answer:

Mole Fraction of HCl is 0.1 & H2O is 0.9