MCQ
The molecular weight of $NaCl$ determined by osmotic pressure method will be
- ASame as theoritical value
- BHigher than theoritical value
- ✓Lower than theoritical value
- DNone of these
✓
Answer
Correct option: C.
Lower than theoritical value
c
We know that, vant hoff factor for $NaCl$ is $2$ .
We know that, vant hoff factor for $NaCl$ is $2$ .
Also, $i =\frac{\text { normal molar mass }}{\text { abnormal molar mass }}$
Therefore experimental molar mass is less.
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