Question

0.865 g of copper sulphide contains 0.575 g of copper, while hydrogen sulphide contains 94.1%
of sulphur. Calculate the equivalent weight of copper.​

Answer 1

Answer:

Hi mate

The weight of hydrogen in water = 11.11 g The weight of oxygen in water = 100 -11.11 = 88.89 g weight of sulphur in sulphur dioxide = 50g weight of oxygen sulphur dioxide = 100 -50 = 50g The weight of sulphur that combines with 88.89 g of oxygen = 50/50 x 88.89 = 88.89g The ratio between the weights of sulphur and hydrogen which combine with a fixed weight of oxygen 88.89: 11.1 = 8:1-------------------1 The weight of sulphur in hydrogen sulfide = 94.11g The weight of hydrogen = 100 -94.11 = 5.89g The ratio between weights of sulphur and hydrogen is 94.11 : 5.89 =16:1 -----------------------------2 from the two equations 1 and 2 we get the ratios 8/1 :16/1 =8:16 = 1:2 From the answer we are able to know that these are simple multiples of each other. hence here Law of reciprocal proportion is verified.

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