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AP® Chemistry Sample Student Responses and Scoring Commentary
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2023AP Chemistry
®
Sample Student Responses
and Scoring Commentary
Inside:
Free-Response Question 1
R Scoring Guidelines
R Student Samples
R Scoring Commentary
© 2023 College Board. College Board, Advanced Placement, AP, AP Central, and the acorn logo are registered
trademarks of College Board. Visit College Board on the web: collegeboard.org.
AP Central is the official online home for the AP Program: apcentral.collegeboard.org.
, AP® Chemistry 2023 Scoring Guidelines
Question 1: Long Answer 10 points
(a) (i) For the correct answer: 1 point
Accept one of the following:
• 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 5
• [Ar] 4s 2 3d 5
(ii) For the correct answer, consistent with part (a)(i): 1 point
4s
Total for part (a) 2 points
(b) For the correct calculated value: 1 point
62.673 g − 61.262 g =
1.411 g Cl
(c) For the correct calculated value, consistent with part (b): 1 point
1 mol Cl
1.411 g Cl × 0.03980 mol Cl
=
35.45 g Cl
(d) For the correct answer, consistent with part (c): 1 point
0.03980 mol Cl 2 mol Cl
= ⇒ MnCl2
0.0199 mol Mn 1 mol Mn
(e) For the correct answer and a valid justification: 1 point
Less than. If some of the mass of aqueous Mnx Cl y is lost due to splattering, the final mass
of the dry beaker and Mnx Cl y will be decreased, which will decrease the calculated mass
and number of moles of chlorine in the dry solid.
© 2023 College Board
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