AP Chemistry Samples and Commentary from the 2019 Exam ... · AP Chemistry Samples and Commentary from the 2019 Exam Administration: Free-Response Question 2 Author: College Board

2019

AP®

ChemistrySample Student Responses and Scoring Commentary

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Free Response Question 2

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AP® CHEMISTRY

2019 SCORING GUIDELINES

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Question 2

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Question 2 (continued)

H

1 1(0.100 mol)(0.08206 L atm mol K )(298 K)

2.00 L

nRT

V

- -

=

2 2

2

[Br ][Cl ]

[BrCl]eqK = 2 2Br Cl

2BrCl( )

eq

P PK

P

2

(0.26)(0.26)0.13

(0.71)eqK = =

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© 2019 The College Board. Visit the College Board on the web: collegeboard.org.







AP® CHEMISTRY

2019 SCORING COMMENTARY



Question 2

Note:

Overview

Sample: 2A

Score: 10

,

Sample: 2B

Score: 9

AP® CHEMISTRY

2019 SCORING COMMENTARY




, .

Sample: 2C

Score: 4

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AP Chemistry Samples and Commentary from the 2019 Exam ... · AP Chemistry Samples and Commentary from the 2019 Exam Administration: Free-Response Question 2 Author: College Board