102 - Physical Chemistry Questions Answers

what is kholarsh law ?

 

Asked By: VIKRANT KUMAR
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Joshi sir comment

According to the law, the total molar conductance of a solution will be the sum of ionic conductance of the anion and cation of the electolyte

for example molar condutance of NaCl solution = λNa+  +   λCl-

  what will be the value of molar conductance for 0.001M aqueoussolution for NH3 ? giveen  k =1.6*10-5  and  equivalent conductance=0.0238

 

Asked By: SHUBHAM VED
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Joshi sir comment

NH+ H+(aq) = NH4

0.001                   0                                 at start

0.001(1-α)          0.001α                       at eq.

now k = 0.001α / 0.001(1-α)

solve this equation for α and getconcentration of NH4+

then use the formula molar conductance = eq. conductance / concentration of NH4+

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