identify the gas evolved in the following reactions and give one chemical test for the gas in each reaction.
1) calcium bicarbonate is treated with dilute hydrochloric acid.
2) ammonium sulphate is warmed with caustic alkali .
3) metallic sulphide is treated with dilute hydrochloric acid.
4) red light is heated with concentrated HCl .
5) sodium sulphide is treated with dilute HCl.
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in first reaction the gas is carbon dioxide
in second reaction the colourless gas ammonia is released
in the third reaction hydrogen gas is evolved
in IV reaction the chlorine gas is liberated
in V reaction hydrogen sulphide with rotten egg smell will evolve
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