Mention with reason the colour changes observed when: (i) silver chloride is exposed to sunlight. (ii) copper powder is strongly heated in the presence of oxygen. (iii) a piece of zinc is dropped in copper sulphate solution.

Mention with reason the colour changes observed when: (i) silver chlo

1.	Mention with reason the colour changes observed when: (i) silver chloride is exposed to sunlight. (ii) copper powder is strongly heated in the presence of oxygen. (iii) a piece of zinc is dropped in copper sulphate solution.
Answer» Solution :(i) Silver chloride is DECOMPOSED to silver and chlorine silver appears as grey. `2AgCl overset("Light")to underset("(grey)")underset("Silver")(2Ag)+Cl_(2)` (ii) It becomes black due to the formation of CuO. `2Cu+O_(2) to underset("(Black)")underset("Copper oxide")(2CuO)` (III) Blue colour will be discharged and brown copper will be deposited. `Zn+underset("Blue")(CuSO_(4)) to ZnSO_(4) +underset("Brown")(Cu)`