The structure of compound Y is shown. [Figure Y.Y]
- (a)Give the systematic name for Y.[1]
- (b)Predict the values for the bond angles a and b shown in the diagram. a ...................................... b ......................................[2]
- (c)(i)State the molecular formula of Z.[1]
- (c)(ii)Name the type of reaction occurring when Y is converted into Z.[1]
- (c)(iii)Alcohols can be classified as primary, secondary or tertiary. Identify with a tick (✔) the alcohol group(s) present in Z. alcohol group present in Z primary secondary tertiary[1]
- (d)(i)Identify all of the compound(s), A–D, that contain a carbonyl group.[1]
- (d)(ii)A-D are reacted separately with the reagents given in the table. Complete the table to: • identify which of the compounds, A–D, reacts with the reagents • give an appropriate observation when a reaction occurs. reagent | compounds identified | observation when a reaction occurs Tollens' reagent alkaline solution of iodine sodium metal[8]
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Mark scheme
Marking points from the official mark scheme (May/June 2019). The mark or mark type is shown in brackets.
- [1] 3-chloroprop-1-ene
- [1] a = 109(.5)°
- [1] b = 120°
- [1] C3H7C1O2
- [1] oxidation
- [1] (Tick in secondary row)
- [1] A and B
- [1] (For Tollens' reagent) Compound(s): B
- [1] (For Tollens' reagent) Observation: silver mirror OR grey / black / brown / silver precipitate
- [1] (For alkaline aq. iodine) Compound(s): A
- [1] (For alkaline aq. iodine) Compound(s): C
- [1] (For alkaline aq. iodine) Observation: (Pale) yellow precipitate / solid
- [1] (For sodium metal) Compound(s): C
- [1] (For sodium metal) Compound(s): D
- [1] (For sodium metal) Observation: Effervescence / sodium/solid disappears
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