Multiple choice

When pH of a solution is 2, the hydrogen ion concentration in moles per litre is

  1. 1 x 10-12

  2. 1 x 10-2

  3. 1 x 10-7

  4. 1 x 10-4
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Using pH = -log[H+], when pH = 2, [H+] = 10^(-2) = 1 × 10^(-2) moles per litre. Option A would give pH 12, option C gives pH 7 (neutral), and option D gives pH 4.

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