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Carbon forms two oxides which have different compositions.The equivalent mass of which remains constant?

Answer»

oxygen
carbon
both carbon and oxygen
neither carbon nor oxygen

Solution :The equivalent mass of a substance have different VALUE under different conditions, it varies with valency.Let us consider the TWO OXIDES of carbon viz. CO and `CO_(2)`. In CO, 12 parts of carbon combine with 16 parts of oxygen thus equivalent mass of carbon in CO is `(12 xx8)/(16) = 6.0`. In `CO_(2)`, 12 parts of carbon combine with 32 parts of oxygen, thus the equivalent mass of carbon in this OXIDE is `(12 xx 8)/(32 = 3.0`.


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