Ionic EquilibriumHard
Question
Which statement/relationship is correct?
Options
A.pH of 0.1 M HNO3, 0.1M HCl, 0.1M HI are not equal.
B.pH = - log 
C.At 25oC the pH of pure water is 7.
D.The value of pKw at 25oC is 7.
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