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JEE Mains · Chemistry · STD 12 - 2. Electrochemistry

\(NaCl,\,HCl\) અને \(NaA\) ના માટે \( \wedge _m^o\) અનુક્રમે \(126.4, 425.9\) અને \(100.5\,\,S\,cm^2\,mol^{-1},\)  છે. જો \(0.001\,M\,HA\) ની વાહકતા \(5\times 10^{-5}\,S\,cm^{-1},\) હોય તો \(HA\) નો વિયોજન અંશ કેટલો થાય? 

  1. A \(0.50\)
  2. B \(0.25\)
  3. C \(0.125\)
  4. D \(0.75\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(0.125\)

Step-by-step Solution

Detailed explanation

\(\lambda _{m}^{o}(HA)\,=\,100.5\,+\,425.9\,-\,126.4\,=400\) \(\lambda _{m}^{o}=\,\frac{K\,\times \,1000}{M}\,=\,\frac{5\,\times \,{{10}^{-5}}\,\times \,{{10}^{3}}}{{{10}^{-3}}}\,=50\) \(\alpha \,=\,\frac{50}{400}\,=\,0.125\)
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