Q.
Statement 1 : The pH of pure water is less than 7 at 600C.Statement 2 : As the temperature increases, pure water becomes slightly acidic.
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a
Both statements I and II are correct.
b
Statement I is correct and statement II is incorrect.
c
Statement I is incorrect and statement II is correct.
d
Both statements I and II are incorrect.
answer is B.
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Detailed Solution
The scale of pH (0 to 14 at 250C) changes to (0 to < 14) as the temperature rises because Kw of water increases with temperature. Note that H+OH- and thus water remains neutral.