passwella.
Menu

JAMB Chemistry 1983 Question 30

Question 30

Volumetric Analysis

What volume of 0.5 M H2SO4 will exactly neutralize 20 cm3 of 0.1 M NaOH solution?

  1. A.2.0 cm3
  2. B.5.0 cm3
  3. C.6.8 cm3
  4. D.8.3 cm3
  5. E.10.4 cm3
Show the answer and explanation

Answer: A (2.0 cm3)

Explanation

NaOH = 0.020 × 0.1 = 0.002 mol, which needs 0.001 mol H2SO4 (1:2 ratio). Volume = 0.001/0.5 = 0.002 dm3 = 2.0 cm3.