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[X] + H base 2SO base 4 ? [Y] a colourless gas with irri9tating smell, [Y] + K base Cr base 2O base 7 + H base 2SO base 4 ? green solution. [X] and [Y] are: a. SO base 2^2-, SO base 2 b. CI^-,HCI c. S^2-, H base 2S d. CO base 3^2-,CO base 2

[X] + H base 2SO base 4 ? [Y] a colourless gas with irri9tating smell, [Y] + K base Cr base 2O base 7 + H base 2SO base 4 ? green solution. [X] and [Y] are:
a. SO base 2^2-, SO base 2
b. CI^-,HCI
c. S^2-, H base 2S
d. CO base 3^2-,CO base 2

Grade:12th pass

1 Answers

Kevin Nash
askIITians Faculty 332 Points
9 years ago

(a) SO base 2 and H base 2S, both being reducing agents, can turn acidified dichromater solution green. SO base 2 can be obtained by the action of acid upon sulphite, while H base 2S is evolved by the action of acid upon sulphide. However, SO base 2 has a burning sulphur smell which is irritating. H base 2S has rotten egg like smell.

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