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4 g of copper was dissolved in concentra...

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

A

23

B

32

C

12

D

20

Text Solution

Verified by Experts

The correct Answer is:
B
Cu = 4g, CuO = 5g, `therefore` Oxygen = 5g, `therefore` Oxygen = 1g
Thus 1g oxygen combinew with Cu = 4g
`therefore` 8g oxygen will combine with Cu =`4 xx 8 = 32 g`
`therefore` Equivalent weights of Cu = 32
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