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NEET 2015

Exam: NEET
Year: 2015
Subject: Chemistry
Chapter: Solutions

NEET 2015 · Chemistry · Solutions

Which one of the following electrolytes has the same value of van's...

Which one of the following electrolytes has the same value of van's Hoff's factor (i) as that of

A{l}_{2}{\left(S{O}_{4}\right)}_{3}

(if all are

100%

ionized)?

Options

A ${K}_{2}S{O}_{4}$
B ${K}_{3}\left[Fe{\left(CN\right)}_{6}\right]$
CAl{ $\left(N{O}_{3}\right)}_{3}$
D ${K}_{4}\left[Fe{\left(CN\right)}_{6}\right]$

Correct answer

D. ${K}_{4}\left[Fe{\left(CN\right)}_{6}\right]$

Step-by-step solution

A{l}_{2}{\left(S{O}_{4}\right)}_{3} \to 2A{l}^{3 +} + 3{SO}_{4}^{2 -} ( i = 5 )

{K}_{2}S{O}_{4} \to 2{K}^{+} + {SO}_{4}^{2 -} ( i = 3 )

{K}_{3}\left[Fe{\left(CN\right)}_{6}\right] \to 3{K}^{+} + {\left[Fe{\left(CN\right)}_{6}\right]}^{3 -} ( i = 4 )

Al{\left({NO}_{3}\right)}_{3} \to {Al}^{3 +} + 3{NO}_{3}^{-} ( i = 4 )

{K}_{4}\left[Fe{\left(CN\right)}_{6}\right] \to 4{K}^{+} + {\left[Fe{\left(CN\right)}_{6}\right]}^{4 -} ( i = 5 )

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