The Van’t Hoff factor for 0.1M $B a C l_{2}$ is 2.74. The percentage dissociation of the salt is

91.3

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74.0

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87.0

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100

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Solution

The correct option is C
87.0

$B a C l_{2} + B a^{+ 2} + 2 C l^{-}$

$(1 - α + α + 2 α) = 1 + 2 α = i = 2.74; α = 0.87$

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