An aqueous solution of a metal nitrate 'A' reacts with sodium bromide solution to form yellow precipitate of compound 'B' which is used in photography . 'B' on exposure to sunlight undergo decomposition reaction to form a metal which is present in 'A' and a reddish brown gas.
(A) identify 'A' and 'B'.
(B) write down the reaction involved.
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Answer: A is AgNo3 b is Br gas
Explanation:
AgBr-> Ag + Br
Agno3+ nabr --- agbr + nano3
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