Molar ionic conductance of ${C a}^{+ 2}$ is $x$ $S m^{2}$ ${m o l e}^{- 1}$ . Equivalent conductance of calcium phosphate is ____ $S m^{2} g$ ${e q}^{- 1}$

x + y

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(3 x + 2 y)

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6 (3 x + 2 y)

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\frac{3 x + 2 y}{6}

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Solution

The correct option is A $x + y$
Calcium phosphate $\to {C a}_{3} {({P O}_{4})}_{2}$
ionic conductance of ${C a}^{2 +} = x$ ${s m}^{2} {m o l}^{- 1}$
ionic conductance of ${P O}_{4}^{3 -} = Y$ ${s m}^{2} {m o l}^{-}$
${C a}_{3} {({P O}_{4})}_{2} \to 3 {C a}^{2 +} + 2 {P O}_{4}^{3 -}$
$∴$ equivalent conductivity $= x + y$

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