passwella.
Menu

JAMB Chemistry 2021 Question 35

Question 35

Acids, Bases and Salts

Given a solution of pH 4.398, calculate it's H+ ions concentration in moles per dm3.

  1. A.0.4×10−5
  2. B.0.4×10−3
  3. C.4.0×10−3
  4. D.4.0×10−5
Show the answer and explanation

Answer: D (4.0×10−5)

Explanation

[H+] = 10−pH = 10−4.398 = 100.602 × 10−5 = 4.0 × 10−5 mol dm−3.