The equation below shows the conversion of propanal to propyl ethanoate.
What are the reagents used and the reactions taking place?
| Reaction 1 | Reagents 1 | Reaction 2 | |
| A |
oxidation |
K2Cr2O7 and H2SO4 |
nucleophilic substitution (condensation) |
| B |
reduction |
NaBH4 |
nucleophilic substitution (condensation) |
| C |
reduction |
LiAlH4 |
oxidation |
| D |
hydrogenation |
H2 |
addition |
But-1-ene reacts separately with HBr and H2/ Ni to give products X and Z respectively.
What are the major products of the reactions?
| X | Z | |
| A. | CH2BrCH2CH2CH3 | CH3CH2Cformat('truetype')%3Bfont-weight%3Anormal%3Bfont-style%3Anormal%3B%7D%3C%2Fstyle%3E%3C%2Fdefs%3E%3Ctext%20font-family%3D%22math197ea3cfb64eeaa1edba65501d0%22%20font-size%3D%2216%22%20text-anchor%3D%22middle%22%20x%3D%228.5%22%20y%3D%2216%22%3E%26%23x2261%3B%3C%2Ftext%3E%3C%2Fsvg%3E) CH |
| B. | CH3CH2CH2CH2OH | CH3CH2CH2CH3 |
| C. | CH3CHBrCH2CH3 | CH3CH2CCH |
| D. | CH3CHBrCH2CH3 | CH3CH2CH2CH3 |
Methylbenzene can be converted into 4-methylphenylamine in a multi-step reaction.
Which order should the reagents be used to do this conversion?
| 1st reagent | 2nd reagent | 3rd reagent | |
| A. | conc. HNO3 / conc. H2SO4 | Sn / conc. HCl | NaOH |
| B. | Sn / conc. HCl | conc. HNO3 / conc. H2SO4 | NaOH |
| C. | Sn / conc. HCl | NaOH | conc. HNO3 / conc. H2SO4 |
| D. | NaOH | conc. HNO3 / conc. H2SO4 | Sn / conc. HCl |
Which alcohol could not be produced by the reduction of an aldehyde or a ketone?
2,2-Dimethylbutan-1-ol
Propan-2-ol
3-Methylpentan-3-ol
2-Methylpentan-3-ol
Which molecule(s) can be both reduced by sodium borohydride, NaBH4, and oxidised by warm acidified potassium dichromate (VI)?
I and II only
I and III only
II and III only
I, II and III
