College Chemistry Ii Phs 1035 Practice Exam 3 With Answer Key Page 15
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3991) In acidic solution, ________.
91)
A) [H 3 O + ] > [OH - ]
B) [H 3 O + ] = [OH - ]
C) [H 3 O + ] < [OH - ]
D) [OH - ] > 7.00
E) [H 3 O + ] = 0M
92) Which solution below has the highest concentration of hydroxide ions?
92)
A) pH = 12.5
B) pH = 11
C) pH = 8.3
D) pH = 6.0
E) pH = 3.0
93) Which solution below has the highest concentration of hydronium ions?
93)
A) pH = 3.0
B) pH = 10
C) pH = 7.0
D) pH = 6.4
E) pH = 11.2
94) An aqueous solution at 25.0°C contains [H + ] = 0.085 M. What is the pH of the solution?
94)
A) 1.07
B) -1.07
C) 13.0
D) 0.0850
E) 1.20 × 10 -13
95) The pH of an aqueous solution at 25.0 °C is 10.55. What is the molarity of H + in this solution?
95)
A) 2.8 × 10 -11
B) 3.5 × 10 -4
C) 3.45
D) 1.1 × 10 -13
E) 3.5 × 10 10
96) Calculate the molarity of hydroxide ion in an aqueous solution that has a pOH of 3.00.
96)
A) 1.0 × 10 -3
B) 11.00
C) 1.0 × 10 -11
D) 3.0 × 10 -14
E) 1.1 × 10 -13
97) What is the pH of an aqueous solution at 25.0 °C in which [H + ] is 0.0015 M?
97)
A) 6.50
B) 2.82
C) -2.82
D) -6.50
E) none of the above
15
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