Q. 64.1( 7 Votes )

i. What is observ

Answer :

i. When lead nitrate reacts with potassium iodide, it forms a yellow coloured precipitate of lead iodide along with potassium nitrate.


ii. This type of reaction is a double displacement reaction.


iii. [PbNO3]2 + 2KI 2KNO3 + PbI2


Here,


PbNO3 is lead nitrate.


KI is potassium iodide.


KNO3 is potassium nitrate.


PbI2 is lead iodide.


OR


i. X is Cu.


Y is CuO.


ii. This a redox chemical reaction. Here, copper gets oxidised by heating to copper oxide, and hydrogen reduces copper oxide back to copper.


iii. Cu + O2 2CuO


CuO + H2 Cu + H2O


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