Question

4. a) A white salt on heating decomposes to give brown fumes and a residue is
left behind
(1) Name the salt
(1) Write the equation for the decomposition reaction.
(b) Which of the following statements is correct and why copper can displace silver from
silver nitrate and silver can displace copper from copper sulphate solution.
(3)​

Answer 1

Answer:

a.1) Pb(NO3)2

a.2) Pb (NO3)2 ---> PbO + NO2 + O2

b.) First statement i.e. copper can displace silver from silver nitrate

Because silver is less reactive than copper and also comes after copper in reactivity series....

Hope this helps mate!!!!