NCERT Exemplar Solutions
Class 10 - Science - CHAPTER 2: Acids, Bases and Salts - Short Answer QuestionsQuestion 40
Class 10 - Science - CHAPTER 2: Acids, Bases and Salts - Short Answer Questions
Question. 40
40. Fill in the missing data in the following table
| Name of the salt | Formula | Salt obtained from — Base | Salt obtained from — Acid |
|---|---|---|---|
| (i) Ammonium chloride | NH₄Cl | NH₄OH | — |
| (ii) Copper sulphate | — | — | H₂SO₄ |
| (iii) Sodium chloride | NaCl | NaOH | — |
| (iv) Magnesium nitrate | Mg(NO₃)₂ | — | HNO₃ |
| (v) Potassium sulphate | K₂SO₄ | — | — |
| (vi) Calcium nitrate | Ca(NO₃)₂ | Ca(OH)₂ | HNO₃ |
Answer:
(i) Ammonium chloride — Formula: \(\mathrm{NH_4Cl}\); Base: \(\mathrm{NH_4OH}\); Acid: \(\mathrm{HCl}\).
(ii) Copper sulphate — Formula: \(\mathrm{CuSO_4}\); Base: \(\mathrm{Cu(OH)_2}\); Acid: \(\mathrm{H_2SO_4}\).
(iii) Sodium chloride — Formula: \(\mathrm{NaCl}\); Base: \(\mathrm{NaOH}\); Acid: \(\mathrm{HCl}\).
(iv) Magnesium nitrate — Formula: \(\mathrm{Mg(NO_3)_2}\); Base: \(\mathrm{Mg(OH)_2}\); Acid: \(\mathrm{HNO_3}\).
(v) Potassium sulphate — Formula: \(\mathrm{K_2SO_4}\); Base: \(\mathrm{KOH}\); Acid: \(\mathrm{H_2SO_4}\).
(vi) Calcium nitrate — Formula: \(\mathrm{Ca(NO_3)_2}\); Base: \(\mathrm{Ca(OH)_2}\); Acid: \(\mathrm{HNO_3}\).
(ii) Copper sulphate — Formula: \(\mathrm{CuSO_4}\); Base: \(\mathrm{Cu(OH)_2}\); Acid: \(\mathrm{H_2SO_4}\).
(iii) Sodium chloride — Formula: \(\mathrm{NaCl}\); Base: \(\mathrm{NaOH}\); Acid: \(\mathrm{HCl}\).
(iv) Magnesium nitrate — Formula: \(\mathrm{Mg(NO_3)_2}\); Base: \(\mathrm{Mg(OH)_2}\); Acid: \(\mathrm{HNO_3}\).
(v) Potassium sulphate — Formula: \(\mathrm{K_2SO_4}\); Base: \(\mathrm{KOH}\); Acid: \(\mathrm{H_2SO_4}\).
(vi) Calcium nitrate — Formula: \(\mathrm{Ca(NO_3)_2}\); Base: \(\mathrm{Ca(OH)_2}\); Acid: \(\mathrm{HNO_3}\).
Detailed Answer with Explanation:
Steps: Table entries filled by identifying salt formulae and the typical base/acid from which they are formed (salt = base + acid neutralisation).