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The molar conductivity of aqueous solution of a weak acid, HA is 200 S cm2mol−1 and its pH is 4. What is the value of pKa of HA at 25∘C?(Given:λ0m(NaA)=100 S cm2mol−1, λ0m(HCl)=425 S cm2mol−1, λ0m(NaCl)=125 S cm2mol−1)

Answer»

The molar conductivity of aqueous solution of a weak acid, HA is 200 S cm2mol1 and its pH is 4. What is the value of pKa of HA at 25C?

(Given:λ0m(NaA)=100 S cm2mol1, λ0m(HCl)=425 S cm2mol1, λ0m(NaCl)=125 S cm2mol1)



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