Respuesta :
When concentration of hydroxide ions becomes equal to the concentration of hydronium ions its pH becomes equal to 7.
Hence, Option (D) is correct answer.
What is pH ?
pH is used to determine the whether the given substance is acidic, basic or neutral. The range of the pH is from 0 - 14. If pH is less than 7 then the solution is acidic, if the pH is equal to 7 then the solution is neutral, if the pH is greater than 7 then the solution is basic.
How to check it is acidic, basic, neutral in aqueous solution ?
- If the concentration of hydroxide ions and concentration of hydronium ion are equal then the solution is neutral that means the pH of the solution is equal to 7.
- If the concentration of hydronium ion is greater than hydroxide ion that is [H₃O⁺] > [OH⁻] then the solution is acidic that means the pH of the solution is less than 7.
- If the concentration of hydroxide ion is greater than hydronium ion that is [H₃O⁺] < [OH⁻] then the solution is basic that means the pH of the solution is greater than 7.
When concentration of hydroxide ions becomes equal to the concentration of hydronium ions then the solution is neutral and the pH of the solution is equal to 7.
Thus, from the above conclusion we can say that Its pH becomes equal to 7 is the true statement for a solution when its concentration of hydroxide ions becomes equal to the concentration of hydronium ions.
Hence, option (D) is correct answer.
Learn more about the pH here: https://brainly.com/question/172153
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