DP Chemistry (first assessment 2025)
Question 22M.2.SL.TZ1.e
| Date | May 2022 | Marks available | [Maximum mark: 1] | Reference code | 22M.2.SL.TZ1.e |
| Level | SL | Paper | 2 | Time zone | TZ1 |
| Command term | Deduce | Question number | e | Adapted from | N/A |
e.
[Maximum mark: 1]
22M.2.SL.TZ1.e
Deduce what would be observed when Compound B is warmed with acidified aqueous potassium dichromate (VI).
[1]
Markscheme
no change «in colour/appearance/solution» ✔
Examiners report
Some students deduced that, as it was a tertiary alcohol, there would be no reaction, but almost all were lucky that this was accepted as well as the correct observation - "it would remain orange".
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.