# #2015_16 Contribution to "Chemistry on Brilliant"-1

Chemistry Level 2

Which of the following is not correct:

$$(A)$$ $$[{ H }^{ + }]=[{ OH }^{ - }]=\sqrt { { K }_{ w } }$$ for a neutral solution at all temperatures.

$$(B)$$ $$[{ H }^{ + }]=[{ OH }^{ - }]={ 10 }^{ -7 }$$ for a neutral solution at all temperatures.

$$(C)$$ $$[{ H }^{ + }]>\sqrt { { K }_{ w } }$$ and $$[{ OH }^{ - }]<\sqrt { { K }_{ w } }$$ for an acidic solution.

$$(D)$$ $$[{ H }^{ + }]<\sqrt { { K }_{ w } }$$ and $$[{ OH }^{ - }]>\sqrt { { K }_{ w } }$$ for an alkaline soluton.

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