What is the concentration of [H+] in the HNO3 acid solution with a PH of 3?
Correct answer: D. 10^-3
- A. 3
- B. -3
- C. - antilog [3]
- D. 10^-3
Explanation
pH is defined as the negative logarithm of the hydrogen ion concentration [H+]. Mathematically, it can be expressed as:pH = -log[H+]Rearranging this equation, we get:[H+] = 10-pHSubstituting the given pH of 3 in the above equation, we get:[H+] = 10^-3Therefore, the concentration of [H+] in an HNO3 acid solution with a pH of 3 is 10^-3 M.
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About pH and pOH
pH measures hydrogen ion concentration and pOH measures hydroxide ion concentration on a logarithmic scale. Calculations use pH = minus log of hydrogen ion concentration, pOH = minus log of hydroxide ion concentration and pH plus pOH equals pKw, with separate treatment of strong and weak acids and bases.
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