Describe the preparation of potassium permanganate. How does the acidified permanganate solution react with
(i) iron (II) ions
(ii) `SO_(2)` and
(iii) oxalic acid?
Write the ionic equations for the reactions.

How does acidified potassium permanganate solution react with (i) KI (ii) H_(2)S

Describe the oxidising action of potassium dichromate and write the ionic equations for its reaction with (i) iodide (ii) iron (II) solution and (iii) H_(2)S .

(i) Write the balanced equations to represent what happens when (a) acidified potassium permanganates reacts with hydrogen sulphide ? (b) acidified potassium dichromate solution reacts with iron (II) solution (ionic equation) ? (ii) The figure given below illustrates the first ionisation enthalpies of first, second and third series of transition elements. (a) Which series amongst the first, second and third series of transition elements have the highest first ionisation enthalpy and Why ? (b) Why there is a fall in IE_(2) from Cr to Mn and from Cu to Zn ? Explain.

Describe the laboratory method of preparation of sulphur dioxide. How does it react with acidified KMnO_4 solution and chlorine water ?

How is SO_2 prepared in laboratary ?How does it react with acidified KMnO_4 solution.

How does acetone react with (i) HCN (ii) phenyl hydrazine (iii) I_2 and NaOH .

How does acetone react with (i) PCl_(5) (ii) C_(2)H_(5)OH (iii) LiAlH_(4)

Write ionic equation for the reaction between potassium permanganate and stannous chloride.