Chemistry, asked by ruchikhanna334, 11 months ago

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Answered by navadeepsai11
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5)

a) Silver chloride which is white colour turns to grey colour silver due to decomposition reaction which occur in presence of sunlight. Such reactions are called as Photo chemical reactions.

b) 2Cu + O2 when heated will give 2CuO

Actual color of copper is brown. Since, if heating this brown copper in air turns black in color this is because of formation of copper oxide. This can be explained as copper reacts with oxygen present in air to form copper oxide, which is actually black in color.

c) Electrolysis of pure water is very low because water is an covalent compound so it can't ionize to release ions. To increase the conductivity of water a few drops of sulphuric acid is added . Being a strong acid it can ionize completely to release H+ ions.

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