Question

2.16 g of copper metal when treated with nitric acid followed by ignition of the nitrate gave 2.70 g of copper
oxide. In another experiment 1.15g of copper oxide upon reduction with hydrogen gave 0.92 g of copper. Show
that the above data illustrate the law of definite proportion.​

Answer 1

Answer:

in the first sample of copper oxide (obtained by the action of nitric acid on Cu), the ... hydrogen) , the mass of Cu is 0.92 g and the mass of oxygen is 1.15 - 0.92 = 0.23 g. ... with HNO3​, followed by ignition of the nitrate, gave 2.7 g of copper oxide. In another experiment 1.15 g of copper oxide, upon reaction with hydrogen, .

Explanation:

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