Which of the following statements are true? A. The pH of a strong acid is always...
Which of the following statements are true?
A. The pH of a strong acid is always lower than the pH of a weak acid.
B. For a conjugate acid-base pair, Ka = 1/Kb.
C. The pH of a solution can never be negative.
D. At least two of the statements A-C are true.
E. All of the statements A-C are false.
Homework Answers
A)
This is wrong because if the concentration of strong acid is very
low its pH would be higher than weak acid.
For example,
pH of 1.00*10^-7 M of HCl is higher than 1.0 M HF solution
B)
This is wrong.
Ka = Kw/Kb
Where Kw is ionisation constant for water
C)
This is wrong.
pH of solution with H+ concentration greater than 1 M can be
negative
Answer: E
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