If m 1 g of a metal A , displaces m 2 g of another metal B from its salt solution and if their equivalent masses are E 1 and E 2 respectively, then the equivalent mass of A can be expressed as

Question

If m 1 ​ g of a metal A , displaces m 2 ​ g of another metal B from its salt solution and if their equivalent masses are E 1 ​ and E 2 ​ respectively, then the equivalent mass of A can be expressed as

TestHub · Accepted Answer

According to the law of chemical equivalence, the number of equivalents of metal A equals the number of equivalents of metal B.

Number of equivalents = $\frac{ma ss}{e q u i v a l e n t ma ss}$

So, $\frac{m _{1}}{E _{1}} = \frac{m _{2}}{E _{2}}$ .

Rearranging for $E_{1}$ : $E_{1} = \frac{m _{1}}{m _{2}} \times E_{2}$ .

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