Cus is not precipitated by passing `H_(2)S` through copper sulphate solution containing KCN. Give reason

Which of the following mixtures cannot be separated by passing H_(2)S through their solutions containing dilute HCl ?

Copper sulphate dissolves in excess of KCN to give :

An orange red precipitate obtained by passing H_(2)S through an acidified solution of an inorganic salt indicates the presence of

Why is CaSO_(4) not precipitated on adding ammonium sulphate to a solution containing Ca^(2+) and Sr^(2+) ions?

What do you observe when HS gas is passed through copper sulphate solution.

Why are the group IV cations not precipitated as sulphides on passing H_(2)S gas through group II solution?

An electric current is passed through silver nitrate solution using silver electrodes. 15.28 g of silver was found to be deposited on catode. What will be the weight of copper deposited on cathode if same amount of electricity is passed through copper sulphate solution using copper electrodes?

Give the function of acidified copper sulphate solution.

Explain giving reasons why (Give equations in support of your answer) :^(**"**) Cu is precipitated as Cus while Zn is not precipitated when H_2S is passed through an acidic solution of Cu(NO_3)_2 and Zn(NO_3)_2 respectively.

2.5 amperes of current is passed through copper sulphate solution for 30 minutes. Calculate the number of copper atoms deposited at the cathode (Cu = 63.54).