which of the following will change colour when it Left Open in sunlight (a) Pb(NO3)2 (b) AgCl
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AgCl will change colour when it is left open in sunlight
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Answer:
AgCl
Explanation:
When silver chloride is left exposed in sunlight, it decomposed to black metallic color silver and chlorine gas is evolved.
2AgCl⟶2Ag(s)+Cl(g)
This is called as Photo decomposition Reaction.
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