2024, Question 7 · Short answer · 4 points · about 9 minutes

Preparing a chromatography solvent

Plan a salt solution preparation and predict how the length of a chromatography run affects separation.

1 Read the question

The question is College Board's, from the 2024 exam. It starts on page 21 of the PDF.

Open Question 7 (PDF, page 21)

2 Write your answer

Answer each part the way you would on the exam, in full sentences, with your work shown. Your writing saves as you type.

3 Score it

Score your answer against College Board's scoring guidelines, one point at a time. Give yourself a point only when your answer says what the guideline asks for.

Scoring guidelines (PDF, page 10) What the exam readers saw (Chief Reader report)

Question, scoring guidelines and Chief Reader report: College Board. The title, summary are ours.