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AP CHEMISTRY EXAM QUESTIONS 2 ( Latest 2024 / 2025 ) Actual Questions and Answers 100% Correct
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AP CHEMISTRY EXAM QUESTIONS 2 ( Latest 2024 / 2025 ) Actual Questions and Answers 100% Correct
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AP CHEMISTRY EXAM QUESTIONS 2• Pure acetic acid (HC2H3O2) is a liquid and is known as glacial acetic acid. Calculate the
molarity of a solution prepared by dissolving 10.00 mL of glacial acetic acid at 25°C in
sufficient water to give 500.0 mL of solution. The density of glacial acetic acid at 25°C is 1.05
g/mL.
a. 1.26 × 103
b. 21.0
c. 0.0210
d. 0.350
e. 3.50 × 10-4: 0.350
• The value of ”H° for the reaction below is -790 kJ. The enthalpy change accompanying the
reaction of 0.95 g of S is kJ.
2S (s) + 3O2 (g) ’ 2SO3 (g)
a. 23
b. -23
c. -12
d. 12
e. -790: -12
16. N2 (g) + O2 (g) ’ 2NO (g)”H = +180.7 kJ
2NO (g) + O2 (g) ’ 2NO2 (g)”H = -113.1 kJ
the enthalpy of reaction for4NO (g) ’ 2NO2 (g) + N2 (g)
is kJ.a. 67.6
b. 45.5
c. -293.8
d. -45.5
e. 293.8: -293.8
• The average fuel value of sugars is 17 kJ/g. A 2.0 L pitcher of sweetenedKool-Aid
contains 400 g of sugar. What is the fuel value (in kJ) of a 500 mL serving of Kool-Aid?
(Assume that the sugar is the only fuel source.)
a. 4.2 × 10^4
b. 1.7 × 10^3
, c. 1.7 × 10^6
d. 1.7 × 10^2
e. 17: 1.7 × 10^3
• A weak electrolyte exists predominantly as in solution.:
Molecules
• What are the spectator ions in the reaction between KOH (aq) and HNO3(aq)?: K+ and
NO3-
• The spectator ions in the reaction between aqueous hydrochloric acid andaqueous ammonia
are .: Cl- only
• How many moles of Co2+ are present in 0.200 L of a 0.400 M solution ofCoI2?: 0.0800
• Calculate the concentration (M) of sodium ions in a solution made by diluting 50.0 mL of
a 0.874 M solution of sodium sulfide to a total volume of250.0 mL.: 0.350
• The molarity of an aqueous solution containing 75.3 g of glucose (C6H12O6)in 35.5 mL of
solution is .: 11.8
• With which of the following will the ammonium ion form an insoluble salt?
a. chloride
b. sulfate
c. carbonate
d. sulfate and carbonate
e. none of the above: none of the above
• With which of the following will the potassium ion form an insoluble salt?
a. chloride
b. sulfate
c. carbonate
d. sulfate and carbonate
e. none of the above: none of the above
• You are given two clear solutions of the same unknown monoprotic acid,but with different
concentrations. Which statement is true?
a. There is no chemical method designed to tell the two solutions apart.
b. It would take more base solution (per milliliter of the unknown solution) toneutralize the
more concentrated solution.
c. A smaller volume of the less concentrated solution contains the same number of moles of
the acid compared to the more concentrated solution.
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