A) 1.7700
B) 0.1770
C) 0.0177
D) 0.0344
Correct Answer: C
Solution :
\[{{X}_{B}}=\frac{n}{n+\frac{{{w}_{A}}}{{{M}_{A}}}}{{X}_{B}}=\frac{n}{n+\frac{1000}{18}}\] If \[{{w}_{A}}=1000\,g,\]then n solute = molality Then \[{{X}_{B}}=\frac{m}{m+\frac{1000}{18}}=\frac{1}{1+\frac{1000}{18}}=0.0177\]
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