Question

221. An aqueous solution of metal nitrate 'P' reacts with sodium bromide,
solutionto form yellow precipitate compound 'Q'which is used in
photography. 'e' on exposureto sunlight undergoes decomposition
reaction to form metal present in along with a reddish brown gas. Identify
'P and 'Q'. Write balanced chemical equation for the chemical reaction.
List two categories in which this reaction can be placed.
anto thonning​

Answer 1

Answer:

i dont the answer sorry

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 Nitrate

Element 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).