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The correct order of molar conductivity at infinite dilution of L i C l , N a C l a n d K C l is

Options

  1. AL i C l > K C l > N a C l
  2. BK C l > N a C l > L i C l
  3. CL i C l > N a C l > K C l
  4. DN a C l > K C l > L i C l

Correct answer

B. K C l > N a C l > L i C l

Step-by-step solution

Ionic mobility depends upon the charge to size ratio of ion. The ionic size in case of hydrated cation is K + a q < N a + a q < L i + a q size of cation is less, will attracted by more H 2 O molecules so becomes more bulky hence, does not move easily.

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