Imat 2023 Question35

Practice Question Solving
1

A pH meter is used to test 0.1 mol L–1 aqueous solutions of the following compounds:

CH3COOH

NaCl

H2SO4

Ba(OH)2

HNO3

Which of the following correctly lists these solutions in order of increasing pH?

3

To determine the order of increasing pH, we need to consider the nature of each compound:

  1. CH₃COOH: A weak acid, so it has a relatively low pH.
  2. NaCl: A neutral salt, so it has a pH around 7.
  3. H₂SO₄: A strong acid, so it has a very low pH.
  4. Ba(OH)₂: A strong base, so it has a high pH.
  5. HNO₃: A strong acid, so it has a very low pH.

Arrange them in order of increasing pH.

  • Strong acids (lowest pH): H₂SO₄, HNO₃
  • Weak acid: CH₃COOH
  • Neutral: NaCl
  • Strong base (highest pH): Ba(OH)₂

H₂SO₄ , HNO₃ ,CH₃COOH , NaCl , Ba(OH)₂

Answer: E)3,5,1,2,4