Redox and Equivalent ConceptHard

Question

When a metal carbonate is treated with excess of dilute sulphuric acid, the weight of metal sulphate formed is 1.43 times the weight of carbonate reacted. What is the equivalent weight of metal?

Options

A.23
B.20
C.39
D.12

Solution

neq metal carbonate = neq metal sulphate

Or $\frac{w}{E + 30} = \frac{1.43w}{E + 48}\therefore E = 11.86$

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