Which has the highest boiling point?

Options

A. `0.1m N_(2)SO_(4)`
B. `0.1m Al(NO_(3))_(3)`
C. `0.1m MgCl_(2)`
D. `0.1m C_(6)H_(12)O_(6)("glucose")`

Answer

C

Explanation

`T_(b)("boiling point")=T_(0)("solvent")+DeltaT_(b)`
`DeltaT_(b)=mxxK_(b)xxi`
m(same)=0.1molal `DeltaT_(b)propi`
Greater the value of i, larger the boiling point of solution
`{:((a),Na_(2)SO_(4)hArr2Na^(+)+SO_(4)^(2-)",",(y)/(3)(1)/(1+(y-1)x)=(1+2x)),((b),C_(6)H_(12)O_(6)"(non-electrolyte),","1 1"),((c),MgCl_(2)hArr Mg^(2+)+2Cl^(-)",",3" "(1-2x)),((d),Al(NO_(3))_(3)hArr Al^(3+)+3NO_(3)^(-)",",4" "(1-+3x)):}`