copper oxide was prepared by the following method (i) 1.75g of the metal were dissolved in nitric acid and igniting the residual copper nitrate yielded 2.19g of copper oxide. show that the give data \ a illustrate the law of constant composition.
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Solution :- 1st method :- weight of Cu : 1.75 g
weight of CuO : 2.19 g
Ratio of weight of Cu and CuO = 1.75 : 2.19 = 1 : 0.7990 ≈ 5 : 4
2nd method :- weight of Cu : 1.14g
weight of CuO : 1.43g
Ratio of weight of Cu and CuO = 1.14 : 1.43 = 1 : 0.7972 ≈ 5 :4
From method 1st and 2nd , it is clear that Cu combined with Oxygen with constant ratio. Hence, the given date is a illustration of the law of constant composition.
A complete question is attached as shown in figure.
Solution :- 1st method :- weight of Cu : 1.75 g
weight of CuO : 2.19 g
Ratio of weight of Cu and CuO = 1.75 : 2.19 = 1 : 0.7990 ≈ 5 : 4
2nd method :- weight of Cu : 1.14g
weight of CuO : 1.43g
Ratio of weight of Cu and CuO = 1.14 : 1.43 = 1 : 0.7972 ≈ 5 :4
From method 1st and 2nd , it is clear that Cu combined with Oxygen with constant ratio. Hence, the given date is a illustration of the law of constant composition.
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