Chemistry X | Acids, Bases and Salts | pH of Salts

pH of Salts

Activity 2.14

  1. Collect the following salt samples – sodium chloride, potassium nitrate, aluminium chloride, zinc sulphate, copper sulphate, sodium acetate, sodium carbonate and sodium hydrogencarbonate (some other salts available can also be taken).
  2. Check their solubility in water (use distilled water only).
  3. Check the action of these solutions on litmus and find the pH using a pH paper.
  4. Which of the salts are acidic, basic or neutral?
  5. Identify the acid or base used to form the salt.
  6. Report your observations in Table 2.4.

Salts of a strong acid and a strong base are neutral with pH value of 7. On the other hand, salts of a strong acid and weak base are acidic with pH value less than 7 and those of a strong base and weak acid are basic in nature, with pH value more than 7.

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