Which of these statements are true for a neutral, aqueous solution at 25 °C? pH = 7.00 [ H + ] = [ OH − ] pOH = 7.00 Which of these statements are true for a neutral, aqueous solution regardless of temperature? [ H + ] = [ OH − ] pH = 7.00 pOH = 7.00

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22-04-2020
Chemistry

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Which of these statements are true for a neutral, aqueous solution at 25 °C? pH = 7.00 [ H + ] = [ OH − ] pOH = 7.00 Which of these statements are true for a neutral, aqueous solution regardless of temperature? [ H + ] = [ OH − ] pH = 7.00 pOH = 7.00

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adioabiola adioabiola · Answer 1 · 2021-10-29T17:31:15+02:00

The statement which are true for a neutral, aqueous solution at 25 °C are:

pH = 7.00
[ H + ] = [ OH − ]
pOH = 7.00

The statement which is/are true for a neutral, aqueous solution regardless of temperature is;

[ H + ] = [ OH − ]

We must know that at standard temperature, 25°C, a neutral, aqueous solution has it's pH = pOH = 7. Additionally, the hydrogen ion concentration, [H+] is equal to its hydroxide ion concentration, [OH-]

pH is slightly affected by change in temperature as it decreases with increase in temperature.

In a neutral aqueous solution, there are always the same concentration of hydrogen ions,[H+] and hydroxide ions, [OH-] and hence, the solution is still neutral (even if its pH changes).

Ultimately, the pH of a solution decreases with increase in temperature and vice versa.