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Which of the following is (are) correct ...

Which of the following is (are) correct statements?
i. `0.1 M CaCl_(2)` has higher boiling point than `0.1 M NaCl`.
ii. `0.05 M Al_(2)(SO_(4))_(3)` has higher freezing point than `0.1 M K_(3)[Fe(CN)_(6)]`.
iii.`0.1 M` glucose exerts higher osmotic pressure than `0.08 M CH_(3)COOH` (25% dissociated). iv. Vapour pressure of `0.05 M` urea solution is greater than that of `0.05 M KCl` solution.
a.i,ii ,b.ii,iv , c. i,ii,iii , d. i,ii,iv

Text Solution

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d. `T_(b)` is higher if im is higher. `T_(f)~` is higher if im is lower.
`pi` is higher if im is higher. `VP` is higher if im is lower.
`CaCl_(2):Im=3xx0.1`,`Al_(2)(SO_(4))_(3)`:` Im=5xx0.05`,
`"Glucose":im=1xx0.1`,`NaCl:im=2xx0.1`,
`K_(3)[Fe(CN)_(6)]:im=4xx0.1`,
`CH_(3)COOH: im=(1+alpha)m=1.25xx0.08=0.1`
Urea:`im=1xx0.05`,`KCl: im=2xx0.05=0.1`
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