Which property of sulphuric acid is shown in the following situation.
a) During the preparation of chlorine the gas is passed through concentrated `H_(2)SO_(4)`
b) Wooden cupboards appeared to be burnt, when concentrated sulphuric acid happened to fall on it.

The wooden cupboards in which concentrated sulphuric acid is often seen charred. Why?

Phthalic acid reacts with resorcinol in the presence of concentrated H_2SO_4 to give

Write balanced equations for the following: i. 'NaCl is heated with sulphuric acid in the presence of 'MnO2 ii. Chlorine gas is passed into a solution of NaI in water.

Sulphuric acid is an important chemical in chemical industry. a) write any two uses of H_(2)SO_(4) b) Write an example for the dehydrating property of H_(2)SO_(4)

How do you account 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 vapours of bromine. Why?

Mg is react with HCI and Zn is react with H_2 SO_4 . Answer the following Questions. a) Write the chemical equation. b) Which common nature of acid is show here.