SolutionHard
Question
If α is the degree of dissociation of Na2SO4, the vant Hoff′s factor (i) used for calculating the molecular mass is
Options
A.1 + α
B.1 - α
C.1 + 2α
D.1 - 2 α
Solution
Na2SO4 ⇋ 2Na+ + SO4-2
1 - α 2α α
Total moles = 1 + 2α
1 - α 2α α
Total moles = 1 + 2α
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