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Conductance of Electrolytic Solution

The molar con...

Question

The molar conductivities at infinite dilution of barium chloride, sulphuric acid and hydrochloric acid are 280, 860 and 426 S $c m^{(2)}$ ${mol}^{- 1}$ respectively. The molar conductivity at infinite dilution of barium sulphate isS $c m^{2}$ ${mol}^{- 1}$ . (Round off to the Nearest Integer)

(  JEE MAIN 2021)

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Solution

$Λ^{\infty} (B a C l_{2}) = 280 S c m^{2}$ ${mol}^{- 1}$

$Λ^{\infty} (H_{2} S O_{4}) = 860 S c m^{2}$ ${mol}^{- 1}$

$Λ^{\infty} (H C l) = 426 S c m^{2}$ ${mol}^{- 1}$

$Λ^{\infty} (B a S O_{4}) = Λ^{\infty} (B a C l_{2}) + Λ^{\infty} (H_{2} S O_{4}) - 2 Λ^{\infty} (H C l)$

$Λ^{\infty} (B a S O_{4}) = 280 + 860 - 2 \times 426$

$Λ^{\infty} (B a S O_{4}) = 288 S c m^{2}$ ${mol}^{- 1}$

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