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JEE Main Chemistry question

ChemistryEquilibriumJEE Main

The molar conductivity of a solution of a weak acid (0.01 M) is 10 times smaller than the molar conductivity of a solution of a weak acid (0.10 M). If , the difference in their values, pK_a(HX)-pK_a(HY), is (consider degree of ionisation of both acids to be ). **[JEE Advanced 2015]**

Answer: 3

Solution

For a weak acid with : (since of the common ion and the near-equal anion limiting conductivities make ). Given :

α_X = Missing argument for \frac\frac{

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Question ID VK-136577