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Magazine Problem 34
Define indicator. Why are different indicators used in different \(\mathrm{pH}\) ranges?
Problem 35
Define salt hydrolysis. Explain the hydrolysis of potassium carbonate by giving ionic equations.
Problem 36
Explain protonic concept of acids and bases with one example each.
Problem 37
How do bases react with the following? Write the equations. (i) non-metallic oxide (ii) ammonium salt (iii) soluble metallic salt
Problem 44
Define basicity of an acid. Give an example each for monobasic, dibasic and tribasic acids.
Problem 46
State the postulates of Arrhenius theory. Explain with examples. What are the limitations of Arrhenius theory?
Problem 47
On the basis of ionization explain classification of acids and bases with suitable examples. Classify acids/bases on the basis of amount of water present in the solution.
Problem 48
Explain the formation of hydronium ion and ammonium ion.
Problem 49
Define salt hydrolysis. Explain the nature of aqueous solution of the following salts on the basis of salt hydrolysis. (i) \(\left(\mathrm{NH}_{4}\right)_{2} \mathrm{CO}_{3}\) (ii) \(\mathrm{CuSO}_{4}\) (iii) \(\mathrm{NaNO}_{3}\) (iv) \(\mathrm{CaCl}_{2}\)
Problem 50
Explain with examples the use of \(\mathrm{NaOH}\) and \(\mathrm{NH}_{4} \mathrm{OH}\) as reagents for the identification of cations in salts.
