State one relevant observation for the following :
Lead nitrate solution is treated with sodium hydroxide solution drop wise till it is excess.
State one relevant observation for each of the following:
At the anode, when molten lead bromide is electrolyzed using graphite electrodes.
State one relevant observation for the following:
Lead nitrate solution is mixed with dilute hydrochloric acid and heated.
When dilute HCl is added to lead nitrate solution and heated, it forms a white precipitate of lead chloride.
Pb(NO3)2 + + 2HCl → PbCl2 + 2HNO3
State one relevant observation for the following:
Anhydrous calcium chloride is exposed to air for some time.
State one relevant observation for the following:
Barium chloride solution is slowly added to sodium sulphate solution.