AP Chemistry · Free-response questions 2017

7 questions, each with its course unit and the official scoring guidelines.

Question 3

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Question 3 — N 2, gas, plus O 2, gas, is in equilibrium with 2 N O, gas 3. At high temperatures, N 2, g as a nd O 2, gas can react to produce nitrogen monoxide, N O, gas, as represented by the equation above. (a) Write the…

Source: College Board — AP Chemistry, Free-response questions, 2017

Question 5

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Question 5 — 2 C 3 H 7 O H, liquid, plus 9 O 2, gas, react to produce 6 C O 2, gas, plus 8 H 2 O, gas 5. A student performs an experiment to determine the enthalpy of combustion of 2 propanol, C 3 H 7 O H, liquid, which combusts in…

Source: College Board — AP Chemistry, Free-response questions, 2017

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Question 7

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Question 7 — 7. A student wants to determine the concentration of H 2 O 2 in a solution of H 2 O 2, aqueous. The student can use one of two titrants, either dichromate ion, C r 2 O 7 with a negative 2 charge, aqueousor cobalt, roman…

Source: College Board — AP Chemistry, Free-response questions, 2017

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