Question

An aqueous solution of metal nitrate P reacts with sodium bromide solution to form yellow ppt of compound Q which is used in photography. Q on exposure to sunlight undergoes decomposition reaction to form metal present in P with reddish brown gas. Identify P&Q. Write the chemical reaction and the type of chemical reaction.

Answer 1

hay his your answer :--An aqueous solution of metal nitrate P reacts with sodium bromide solution to form yellow ppt of compound Q which is used in photography. Q on exposure to sunlight undergoes decomposition reaction to form metal present in P along with reddish brown gas.

Answer 2

An aqueous solution of Silver nitrate reacts with sodium bromide solution to form yellow ppt of compound Silver bromide which is used in photography.IT IS A DOUBLE DISPLACEMENT reaction where mutual exchange of ions takes between reactants.BALANCED CHEMICAL EQUATION:2Ag (NO3) (aq)+ 2 NaBr (aq) -----> 2AgBr (s) + NaNO3 (aq)Element P = Silver NitrateElement Q = Silver Bromide which is used in photography.Silver Bromide on exposed to sunlight decomposes to silver metal and brown Bromine gas.It is Photo chemical decomposition reaction where compound split up into it's constituents by sunlight energy.BALANCED CHEMICAL Equation: 2AgBr-----> 2Ag (s) + Br2 ( g).