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

Question

Chemistry

Chris

26 October, 10:28

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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Answers (1)

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Tomas Kline · Answer 1

1) pH = 7.00, [ H + ] = [ OH - ], pOH = 7.00

2) [ H + ] = [ OH - ]

Explanation:

A neutral solution has a pH and pOH of 7, also the concentrations of hydrogen and hydroxide ions in the system are equal, hence the equal pH and pOH.

Temperature does slightly affect the pH or pOH of a neutral aqueous solution. This does not imply that the solution become more acidic or basic, because the concentration of the hydroxide and hydrogen ions remain equal at all temperatures even though there may be slight changes in pH or pOH.