Pure water is about 7 at 25 °C; this value decreases with increasing temperatures. At 50 °C, it is 6.55. It is also worth to note, that wPure water is about 7 at 25 °C; this value decreases with increasing temperatures. At 50 °C, it is 6.55. It is also worth to note, that water that has been exposed to air is mildly acidic, because it absorbs carbon dioxide from the air.sorbs carbon dioxide from the air.

Question

Vikas TU · Answer

Dear student On heating water Kw increases and thus pH scale for neutrality changes from 7 to some lower value, i.e, 6.8 or 6.9 depending upon Kw values. Good Luck Cheers

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