0.1 mole of NaCl is dissolved in 100 g of water. The mole fraction of NaCl is

Question

0.1 mole of NaCl is dissolved in 100 g of water. The mole fraction of NaCl is (A) 0.0213 (B) 0.0177 (C) 0.2290 (D) 0.0330

Tardigrade Admin · Accepted Answer

Mole fraction of NaCl =( text Number of mole of NaCl / text Total number of mole of solution ) 100 g water =(100/18) mol water =5.5 mol Mole fraction of NaCl =(0.1/0.1+5.5)=(0.1/5.6)=0.178

Q. $0.1$ mole of $N a Cl$ is dissolved in $100 g$ of water. The mole fraction of $N a Cl$ is

0.0213

0.0177

0.2290

0.0330

Mole fraction of $N a Cl$

$= \frac{Number of mole of N a Cl}{Total number of mole of solution}$

$100 g$ water $= \frac{100}{18}$ mol water $= 5.5 m o l$

Mole fraction of $N a Cl = \frac{0.1}{0.1 + 5.5} = \frac{0.1}{5.6} = 0.178$

Q. 0.1 mole of NaCl is dissolved in 100g of water. The mole fraction of NaCl is