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

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
Correct Answer: Option A
Explanation

PH = -log (H+)
(H+) = 10-4.348 = 4.0 χ 10-5

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