pH Answers
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Which statement about the self-ionization of water is correct?
A
Two water molecules interact to form a water molecule and a hydroxide ion.B
Two water molecules interact to form a hydronium ion and a hydroxide ion.C
Two water molecules interact to form two hydronium ions.D
Two water molecules interact to form two hydroxide ions.3
The pOH of a solution is 10.75. What is the concentration of OH– ions in the solution?Use .
A
3.162 10–108 M
B
1.778 10–11 M
C
1.075 102 M
D
5.623 1010 M
4
Which describes an alkaline solution?
A
pH less than 7B
pH equal to 7C
basicD
acidic5
A solution containing HCl would likely have
A
a high pH and a low pOH.B
a low pH and a high pOH.C
a high pH and a high pOH.D
a low pH and a low pOH.6
The pH of a solution is 2.0. Which statement is correct?Useful formulas include , , , and .
A
The pOH of the solution is 12.0.B
The concentration of OH– ions is 1.0 10–2 M.
C
The concentration of ions is 100.0 M.
D
The pOH of the solution is 16.0.
8
Which statement best describes the pH of pure water?
A
It is neutral because the concentration of hydronium ions equals that of hydroxide ions.B
It is neutral because the pure liquid contains neither hydronium ions nor hydroxide ions.C
It is acidic because it has a hydronium ion concentration of .
D
It is basic because it has a hydroxide ion concentration of .
9
Which of these correctly defines the pH of a solution?
A
the negative log of the hydronium ion concentrationB
the log of the hydronium ion concentrationC
the negative log of the hydroxide ion concentrationD
the log of the hydroxide ion concentration10
What is the pH of a solution with [H+] = 1.25 10–10 M?Use .
A
–10.1B
–9.90C
7.90D
9.90Did you find these answers helpful?
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