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
jamb 1990chemistry

The correct answer is A. 4.0 χ 10-5

PH = -log (H+)

(H+) = 10-4.348 = 4.0 χ 10-5

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