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From the following molar conductivities at infinite dilution, _ m ^ (in ⁻¹ ~cm ^2 ~mol ⁻¹ ) for NH ₄ OH is aligned & _ m ^ for Ba ( OH )₂=446.8 ⁻¹ ~cm ^2 ~mol ⁻¹ & _ m ^ for BaCl ₂=241.6 ⁻¹ ~cm ^2 ~mol ⁻¹ & _ m ^ for NH ₄ Cl =130 ⁻¹ ~cm ^2 ~mol ⁻¹ aligned

Correct answer

232.6

Step-by-step solution

aligned & _ m ( NH H ₄ OH )= ^ = _ NH ₄⁺ ^ + &= _ OH ⁻ ^ &= ( _ NH ₄⁺ ^ + _ Cl ⁻ ^ )+ 1 2 ( _ Ba ²⁺ ^ +2 _ OH ⁻ ^ ) &- 1 2 ( _ Ba ²⁺ ^ +2 _ Cl ⁻ ^ ) &= _ m ( NH ₄ Cl ) ^ + 1 2 _ m [ Ba ( OH )₂ ] ^ - 1 2 _ m ( BaCl ₂ ) ^ &= 130+ 1 2 +446.8- 1 2 241.6 &= 232.6 ⁻¹ ~cm ^2 ~mol ⁻¹ . aligned

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