JAMB Chemistry 2016 Objective — Question 36

Question 36 of 40 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2016 Objective paper, with the correct answer and a full explanation.

36. What volume of 0.5MH2SO4 will exactly neutralize 20cm3 of 0.1M NaOH solution? A. 2.00cm3 B. 5.00cm3 C.6.8cm3 D. 8.3cm3

A. 2.00cm3Correct
B. 5.00cm3
C. 6.8cm3
D. 8.3cm3

Explanation

2NaOH + H2SO4 → Na2SO4 + 2H2O; Mole of NaOH = 0.020dm3×0.1M = 0.002mol; mole of H2SO4 required = 0.001mol; V = 0.001/0.5 = 0.002dm3 = 2cm3.

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