Which of the following solution will have a pH exactly equal to 8 ?

Engineering

Chemistry

pH Calculation for Acids and Bases

Question

10^–8 M H⁺ solution at 25ºC

2 × 10^–6 M Ba(OH)₂ solution at 25ºC

10^–5 M NaOH solution at 25ºC

10^–8 M HCl solution at 25ºC

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At 25ºC, [H⁺] in a solution of 10^–8 M HCl > 10^–7 M,

[H⁺] = 10^–8 M,

[OH^–] = 4 × 10^–6 M ⇒ [H⁺] = 2.5 × 10^–9 M,

[H⁺] = 10^–9 M.