Question

explain giving chemical equation any two uses of chemical decomposition reaction in industry

Answer 1

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The compound Mercury oxide when heated decomposes to form two element Mercury and oxygen.
2HgO --------- 2Hg + O2
when electric current is passed through acidulated water the latter decomposes into hydrogen and oxygen.
2H2O ---------- 2Hg + O2
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Answer 2

In manufacturing cement , quick lime is used and it is obtained by lime

stone

CaCO3------whenheated CaO+CO2

In the fomation of photochromic glass ,silver chloride/bromide is used which turns grey in sunlight

2AgBr----by sunlight Ag+Br2

2AgCl----by sunlight Ag+Cl2

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