DP Chemistry (first assessment 2025)
Question 19M.1A.SL.TZ1.34
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.1A.SL.TZ1.34 |
| Level | SL | Paper | 1A | Time zone | TZ1 |
| Command term | Question number | 34 | Adapted from | N/A |
34.
[Maximum mark: 1]
19M.1A.SL.TZ1.34
Which alcohol would produce a carboxylic acid when heated with acidified potassium dichromate(VI)?
A. propan-2-ol
B. butan-1-ol
C. 2-methylpropan-2-ol
D. pentan-3-ol
[1]
Markscheme
B
Examiners report
75 % of candidates could correctly identify the oxidation of a primary alcohol to form carboxylic acid.
Syllabus sections
Reactivity 3. What are the mechanisms of chemical change? » Reactivity 3.2—Electron transfer reactions » Reactivity 3.2.9—Functional groups in organic compounds may undergo oxidation. Deduce equations to show changes in the functional groups during oxidation of primary and secondary alcohols, including the two-step reaction in the oxidation of primary alcohols.