NaOH solution is added to `Al_2(SO_4)_3)` solution?

Excess of ammonia solution is added to CuSO_(4) solution.

An aqueous solution of a gas (X) -turns red litmus blue. When excess of this solution is added to copper sulphate solution, it turns deep blue. When this solution is added to FeCl_(3) solution, a brownish precipitate soluble in HNO_(3) is obtained. Identify the gas (X) and write balanced equations for each of the reaction involved.

If NaOH solution is added to acetic acid solution the conductance of the mixed solution will be ___________.

At 25^(@) , K_b for CN^- (conjugate base of HCN) is 2.5xx10^(-5) . If 25 mL of 0.01(M) aqueous NaOH solution is added to 50mL of 0.01(M) HCN solution, then-

If 50mL 0.1(M) NaOH solution is added to 20 mL 0.25(M) CH_(3)COOH solution, then what will be the pH of mixed solution? [pK_(a)(CH_(3)COOH)=4.74] .

What happens when H_2O_2 solution is added to KI solution containing dilute H_2SO_4 ?

State, the equations, what happens when : Excess of ammonia solution is gradually added to a solution of CuSO_(4)

FeSO_(4) solution mixed with (NH_(4))_(2)SO_(4) solution in 1:1 molar ratio gives the test of Fe^(2+) ion, but CuSO_(4) solution mixed with aqueous NH_(3) in 1:4 molar ratio does not give the test of Cu^(2+) ion. Explain.