MCQ
Which of the following aqueous molal solution have highest freezing point,
- ✓Urea
- BBarium chloride
- CPotassium bromide
- DAluminium sulphate
✓
Answer
Correct option: A.
Urea
a
(a)$KBr = {K^ + } + B{r^ - } = 2$ ions
(a)$KBr = {K^ + } + B{r^ - } = 2$ ions
$BaC{l_2} = B{a^{2 + }} + 2C{l^ - } = 3$ ions
$A{l_2}{(S{O_4})_3} = 2A{l^{3 + }} + 3SO_4^{2 - } = 5$ ions
urea is not ionise hence it is shows highest freezing point.
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