Silver articles become black on prolonged exp | vedclass

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Question

(B) When silver articles are exposed to air for a long time, they react with sulfur compounds present in the air, such as hydrogen sulfide $(H_{2}S)$.

Vedclass · Accepted Answer

$Ag_{2}S$

Vedclass · Answer

(B) When silver articles are exposed to air for a long time, they react with sulfur compounds present in the air, such as hydrogen sulfide $(H_{2}S)$.This chemical reaction leads to the formation of a black coating of silver sulfide $(Ag_{2}S)$ on the surface of the silver.The chemical equation for this process is: $2Ag + H_{2}S \rightarrow Ag_{2}S + H_{2}$ (or more accurately in the presence of oxygen: $4Ag + 2H_{2}S + O_{2} \rightarrow 2Ag_{2}S + 2H_{2}O$).

Silver articles become black on prolonged exposure to air. This is due to the formation of:

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