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प्रश्न
What is the [OH–] concentration of an acid whose pH is 5 at 25°C?
उत्तर
Given,
pH = 5
∴ `["H"^+] = 10^-5` M
Now, `["H"^+]["OH"^-] = 10^-14`
∴ `["OH"^-] = 10^-14/[["H"^+]] = 10^-14/10^-5 = 10^-9`M
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