1.

4g of copper was dissolved in conc. Nitric acid. The copper nitrate so obtained on strong heating gave 5 g of its oxide. The equivalent weight of copper is

Answer»

`23`
`32`
`12`
`20`

Solution :4g of copper gives 5 g of its OXIDE
`:.` 4 g of copper COMBINES with 1 g of oxygen
`:.` Mass of copper that combines with 8g of oxygen `8xx4=32`
`:.` Eq. mass of copper = 32


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