Write formulas for the following compounds: (a) Mercury (II) chloride (b) Nickel (II) sulphate (c) Tin (IV) oxide (d) Thallium (I) sulphate (e) Iron (III) sulphate (f) Chromium (III) oxide
Ions carrying positive charge are cations, while ions carrying negative charge are anions. In other words, the species moving towards cathode are nations and those moving towards anode are anions during electrolysis.
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14.What is electrolysis?
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15.Mention two uses of electrolysis.
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16.In the reaction: name the substance oxidised?
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17.In the reaction:
mention the element which losses as well as gains electrons.
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18.
Define oxidation number of an element.
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19.
Differentiate between an ion and an atom.
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20.
Is the valency of an element same as its oxidant number?
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