The limiting molar conductivities - for NaCl- KBr and KCl are 126-152 and 150 S cm 2 mol -1 respectively- The - for N aBr isA- 176 S cm 2 mol -1B- 278 S cm 2 mol -1C- 128 S cm 2 mol -1D- 302 S cm 2 mol -1

The correct option is C 128 S cm2mol 1(126 scm^2)∧ ^∘_NaCl = ∧ ^∘_Na++∧ ^∘_Cl^ .......(1) (152 scm^2)∧ ^∘_KBr =∧ ^∘_K^++∧ ^∘_Br^ ...

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Byju's Answer

Standard IX

Chemistry

Kohlrausch Law

The limiting ...

Question

The limiting molar conductivities $λ^{\circ}$ for $N a C l, K B r$ and $K C l$ are $126, 152$ and $150 S c m^{2} m o l^{- 1}$ respectively. The $λ^{\circ}$ for $N a B r$ is

278 S cm²mol^-1

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176 S cm²mol^-1

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128 S cm²mol^-1

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302 S cm²mol^-1

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Solution

The correct option is C 128 S cm²mol^-1
$(126 s c m^{2}) \land_{N a C l}^{\circ} = \land_{N a +}^{\circ} + \land_{C l^{-}}^{\circ}$ $. . . . . . . (1)$
$(152 s c m^{2}) \land_{K B r}^{\circ} = \land_{K^{+}}^{\circ} + \land_{B r^{-}}^{\circ}$ $. . . . . . . (2)$
$(150 s c m^{2}) \land_{K C l}^{\circ} = \land_{K^{+}}^{\circ} + \land_{C l^{-}}^{\circ}$ $. . . . . . . (3)$
By equation $(1) + (2) - (3)$
$∵ \land_{N a B r}^{\circ} = \land_{N a +}^{\circ} + \land_{B r^{-}}^{\circ} = 126 + 152 - 150 = 128 S c m^{2} m o l^{- 1}$

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Q. The limiting molar conducticities

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The limiting molar conductivities $\land^{0}$ for $N a C l, K B r$ and $K C l$ are $126, 152$ and $150$ $S$ $c m^{2} m o l^{- 1}$ respectively. The $\land^{0}$ for $N a B r$ is :

The limiting molar conductivity for NaCl,KBr and KCl are 126,152 & 150 S.cm^2mol^-1 respectively.then molar conductivity for NaBr is

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The limiting molar conductivity for KCl, NaBr and NaCl are 100, 120, 130 S cm^-2mol^-1 respectively. Calculate the limiting molar conductivity for KBr?

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The limiting molar conductivities λ∘ for NaCl,KBr and KCl are 126, 152 and 150 S cm2 mol−1respectively. The λ∘ for NaBr is

The correct option is C 128 S cm2mol-1(126 scm2)∧∘NaCl=∧∘Na++∧∘Cl− .......(1) (152 scm2)∧∘KBr=∧∘K++∧∘Br− .......(2) (150 scm2)∧∘KCl=∧∘K++∧∘Cl− .......(3) By equation (1)+(2)−(3) ∵ ∧∘NaBr=∧∘Na++∧∘Br−=126+152−150=128 Scm2mol−1

The limiting molar conductivities $λ^{\circ}$ for $N a C l, K B r$ and $K C l$ are $126, 152$ and $150 S c m^{2} m o l^{- 1}$ respectively. The $λ^{\circ}$ for $N a B r$ is