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What is the concentration of H+ ions in moles per dm3 of a sodium of...

Chemistry
JAMB 1990
What is the concentration of H+ ions in moles per dm3 of a sodium of pH 4.398?
  • A. 4.0 χ 10-5
  • B. 0.4 χ 10-5
  • C. 4.0 χ 10-3
  • D. 0.4 χ 10-3
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Correct Answer: Option A
Explanation
PH = -log (H+)
(H+) = 10-4.348 = 4.0 χ 10-5
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