Which of the following aqueous solution will show maximum vapour pressure at 300K?

1 M N a C l

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1 M C a C l_{2}

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1 M A l C l_{3}

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1 M C_{12} H_{22} O_{11}

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Solution

The correct option is D $1 M C_{12} H_{22} O_{11}$
The concentration is the same for all the four solutions.

The number of particles given by 1 molecule each of $N a C l, C a C l_{2}, A l C l_{3}$ and $C_{12} H_{22} O_{11}$ is 2, 3, 4 and 1 respectively.

Thus the number of particles is lowest for $C_{12} H_{22} O_{11}$ .

Hence the relative lowering in vapour pressure will be the lowest form $1 M C_{12} H_{22} O_{11}$ solution.

Hence, the vapour pressure will be maximum for $1 M C_{12} H_{22} O_{11}$ solution.

Hence, the correct option is $D$

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Similar questions

Which solution will show the maximum vapour pressure at 300 K?

N a C l = 58.5, H_{2} {S O}_{4} = 98.0 g . {m o l}^{- 1}

Which solution will show the maximum vapour pressure at 300 K?

500 m l, 1 M N a C l

500 m l, 1 M C a C l_{2}

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