In aqueous solutions `Cu^+` is less stable than `Cu^(2+)`

Pt^(4+) is less/more stable than Ni^(4+) .

In aqueous solution, trimethylamine is more basic than methylamine.

What will happen during the electrolysis of aqueous solution of CuSO_4 in the presence of Cu electrodes?

The change in potential of the half cell Cu^(2+)|Cu , when aqueous Cu^(2+) solution is diluted 100 times at 298K?

Out of the ions Ni^(2+) , Zn^(2+) and Cu^2+) , which will give coloured aqueous solution and what will be the magnetic beghaviour of each ion ? (Atomic number of Ni = 28, Zn =30 and Cu = 29).

An aqueous solution containing 1M each of Au^(3+),Cu^(2+),Ag^(+),Li^(+) is being electrolysed by using inert electrodes. The value of standard potentials are : E_(Ag^(+)//Ag)^(@)=0.80 V,E_(Cu^(+)//Cu)^(@)=0.34V and E_(Au^(+3)//Au)^(@)=1.50,E_(Li^(+)//Li)^(@)=-3.03V will increasing voltage, the sequence of deposition of metals on the cathode will be :

Can we store copper sulphate solution in iron vessel? Give suitable explanation in support of your answer [E°(Cu^(2+)//Cu)=+0.34V,E°(Fe^(2+)//Fe)=-0.44V]

Predict which of the following will be coloured in aqueous solution? Ti3+, V3+, Cu+, Sc3+, Mn2+, Fe3+ and Co2+. Give reasons for each.