The density of 3M solution of NaCl is 1.0 g mL^(-1). Molality of the solution is ______×10^(-2) m (Nearest integer). Given: Molar mass of Na and Cl is…

Question

The density of 3M solution of NaCl is 1.0 g mL^(-1). Molality of the solution is ______×10^(-2) m (Nearest integer). Given: Molar mass of Na and Cl is 23 and 35.5 g mol^(-1) respectively.

MARKS Content Team · Accepted Answer

Correct answer: 364. Formula unit mass of sodium chloride = 23 + 35.5 gmol^(-1) = 58.5 gmol^(-1) ∴m(molality)=(1000×M)/(1000×d-M×M.W of solute ) ...(M = Molarity of solution) =(1000×3)/(1000×1-(3×58.5))=3.64 =364×10^(-2)

The density of $3 M$ solution of $NaCl$ is $1.0 g {mL}^{- 1}$ . Molality of the solution is $______\times 10^{- 2} m$ (Nearest integer).
Given: Molar mass of $Na$ and $Cl$ is $23$ and $35.5 g$ ${mol}^{- 1}$ respectively.

Solution

Relevant Questions

The density of 3M solution of NaCl is 1.0 g mL-1. Molality of the solution is ______×10-2 m (Nearest integer).Given: Molar mass of Na and Cl is 23 and 35.5 g mol-1 respectively.

Solution

Relevant Questions

The density of $3 M$ solution of $NaCl$ is $1.0 g {mL}^{- 1}$ . Molality of the solution is $______\times 10^{- 2} m$ (Nearest integer).
Given: Molar mass of $Na$ and $Cl$ is $23$ and $35.5 g$ ${mol}^{- 1}$ respectively.