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Acids, bases and salt
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06/09/2021 11:54 am
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(a) What does the pH of a solution signify? Three solutions A, B and C have pH values of 6, 4 and 10 respectively. Which of the solutions is highly acidic?
(b) A farmer has found that the pH of soil in his fields is 4.2. Name any two chemical materials which he can mix with the soil to adjust its pH.
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06/09/2021 11:55 am
(a) pH of a solution signifies the concentration of hydrogen ions in it. Solution B is highly acidic since it has the lowest pH (pH = 4).
(b) Slaked lime or Chalk can be used to treat acidic soil.