1.

4 g of copper was dissolved in concentrated nitric acid. The copper nitrate on strong heating gave 5 g of its oxide. The equivalent weight of copper is

Answer»

23
32
12
20

Solution :Cu = 4gCuO = 5G` THEREFORE ` Oxygen = 1 g
1G of oxygen combines with Cu = 4g
8g of oxygen will combine with `Cu = 4 xx 8 = 32g`
` therefore` Eq. wt. of Cu = 32


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