A) 0.372 K
B) 0.0558 K
C) 0.0744 K
D) 0.0186 K
Correct Answer: B
Solution :
[b] Sodium sulphate dissociates as \[N{{a}_{2}}S{{O}_{4}}\left( s \right)\xrightarrow{{}}2N{{a}^{+}}+SO{{_{4}^{-}}^{-}}\] hence van't hoff factor i = 3 Now \[\Delta {{T}_{f}}=i{{k}_{f}}.m\] \[=3\times 1.86\times 0.01=0.0558\text{ }K\]You need to login to perform this action.
You will be redirected in
3 sec