1.

The molar conductivity of 0.025 mol L-1 methanoic acid is 46.1 S cm2 mol-1. Calculate its degree of dissoiation and dissociation constant. Given ∧°m(H+) = 349.6 S cm2 mol-1 and ∧°m(HCOO–) = 546 S cm2 mol-1?

Answer»

∧°m (HCOOH)= ∧°(H+) + ∧°m (HCOO)
= 349.6 + 54.6
= 404.2 S cmmol-1



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