formulas for the following compounds: (a) Mercury(II) chloride (b) Nickel(II) sulphate (c) Tin(IV) oxide (d) Thallium(I) sulphate (e) Iron(III) sulphate ( f ) Chromium(III) oxide . Suggest a list of the substances where carbon can exhibit oxidation states from – to + and nitrogen from – to + . . While sulphur dioxide and hydrogen peroxide can act as oxidising as well as reducing agents in their reactions, ozone and nitric acid act only as oxidants.
Why ? . Consider the reactions: (a) CO (g) + 6H O(l) → C H O (aq) + 6O (g) (b) O (g) + H O (l) → H O(l) + 2O (g) Why it is more appropriate to write these reactions as : (a) 6CO (g) + 12H O(l) → C H O (aq) + 6H O(l) + 6O (g) (b) O (g) + H O (l) → H O(l) + O (g) + O (g) Also suggest a technique to investigate the path of the above (a) and (b) redox reactions. .
The compound AgF is unstable compound. However, if formed, the compound acts as a very strong oxidising agent. Why ? .
Whenever a reaction between an oxidising agent and a reducing agent is carried out, a compound of lower oxidation state is formed if the reducing agent is in excess and a compound of higher oxidation state is formed if the oxidising agent is in excess. Justify this statement giving three illustrations. . How do you count for the following observations ?
(a) Though alkaline potassium permanganate and acidic potassium permanganate both are used as oxidants, yet in the manufacture of benzoic acid from toluene we use alcoholic potassium permanganate as an oxidant. Why ? Write a balanced redox equation for the reaction. (b) When concentrated sulphuric acid is added to an inorganic mixture containing chloride, we get colourless pungent smelling gas HCl, but if the mixture contains bromide then we get red vapour