Which of the following aqueous solution has the highest boiling point having concentration 0.03 m ?

Options

A. `"Urea"_((aq))`
B. `"Sodium sulphate"_((aq))`
C. `"Aluminium sulphate"_((aq))`
D. `"Sodium nitrate"_((aq))`

Answer

C

Explanation

`{:(,"Substance","Insolution","Total Particles"),((A),"Urea ":NH_(2)CONH_(2(s)),overset(H_(2)O)rarr NH_(2)CONH_(2(aq)),"1 and 0.03 m"),((B),"Sodium sulphate ": Na_(2)SO_(4),overset(H_(2)O)rarr 2Na_((aq))^(+)+SO_(4(aq))^(2-),"3 and "(3xx0.03)=0.09 m),((C ),"Aluminium sulphate " : Al_(2)(SO_(4))_(3),overset(H_(2)O)rarr 2Al_((aq))^(3+)+3SO_(4(aq))^(2-),"5 and "(5xx0.03)=0.15m):}`
Boiling point `prop` (number of particles) `prop` concentration
`therefore` Aluminium sulphate has highest boiling point.