Q.
pH of water is 7.0 at 250C. If water is heated to 700C, the
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a
pH will decrease and solution becomes acidic
b
pH will increase
c
pH will remain constant as 7
d
pH will decrease but solution will be neutral
answer is D.
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Detailed Solution
On heating water KW increases and thus pH scale for neutrality changes from 7 to some lower value, i.e., 6.8 or 6.3depending upon KW values.
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