A) 235 g
B) 352 g
C) 250 g
D) 253 g
Correct Answer: D
Solution :
Key Idea: The molecular mass of solute is calculated by using following formula \[M=\frac{1000\times {{K}_{b}}\times W}{W\times \Delta {{T}_{b}}}\] where M = molecular mass of solute = ? \[{{K}_{b}}=2.53k{{m}^{-1}}\] w = weight of solute = 10 g W = weight of solvent = 100 g \[\Delta {{T}_{b}}=\]elevation in boiling point\[={{1}^{o}}C\] Substituting the values \[M=\frac{1000\times 2.53\times 10}{100\times 1}\] \[=253g\]You need to login to perform this action.
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