Q. When $W_{B}$ g solute (molecular mass $M_{B}$) dissolves in $W_{A}$ g solvent, the molality $M$ of the solution is
A) $\frac{W_{B}}{M_{B}} \times \frac{1000}{W_{A}}$
B) $\frac{W_{A}}{M_{B}} \times \frac{1000}{W_{B}}$
C) $\frac{W_{B}}{W_{A}} \times \frac{M_{A}}{1000}$
D) $\frac{W_{A}}{W_{B}} \times \frac{M_{B}}{1000}$
Explanation
The correct answer is Option A: $\frac{W_{B}}{M_{B}} \times \frac{1000}{W_{A}}$.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.