AP EAMCET2010ChemistryElectrochemistry
At a certain temperature and at infinite dilution, the equivalent conductances of sodium benzoate, hydrochloric acid and sodium chloride are 240, 349 and 229 ohm ⁻¹ ~cm ^2 equiv ⁻¹ respectively. The equivalent conductance of benzoic acid in ohm ⁻¹ ~cm ^2 equiv ⁻¹ at the same conditions is
Options
- A80
- B328
- C360
- D408
Correct answer
C. 360
Step-by-step solution
Given, _ C ₆ H ₅ COONa ^ =240 ⁻¹ ~cm ^2 equiv ⁻¹ _ HCl ^ =349 ⁻¹ ~cm ^2 equiv ⁻¹ _ NaCl ^ =229 ⁻¹ ~cm ^2 equiv ⁻¹ _ C ₆ H ₅ COOH ^ = _ C ₆ H ₅ COONa ^ + _ HCl ^ - _ NaCl ^ =240+349-229=360 ⁻¹ ~cm ^2 equiv ⁻¹