The concentration of (H+) ions is 4 x 10^-5 in a solution. Then pH of the solution will be (Given log 4 = 0.6) ?
Correct answer: A. 4.4
- A. 4.4
- B. 5.6
- C. 8.4
- D. 2.4
Explanation
Using pH = -log[H+], pH = -log(4 × 10^-5) = 5 - log 4 = 5 - 0.6 = 4.4. The exponent gives the 5, while log 4 supplies the 0.6 correction.
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