Advanced Higher Chemistry 2009

I didn't either really a couple of days ago Good old cramming.

Ones to learn: 4 benzene electrophilic substitutions, nucleophilic carbonyl substitutions, forming an ester with acid chloride, forming ethers with an alkoxide ion and a halolgenoalkane.

There are probably more, but those are the ones I can think of

So for reagents, if it's a reduction reaction will lithium aluminium hydride always be an answer?

Likewise for oxidations - acidified potassium dichromate?

no tea break

Alcohols are reduced to alkenes by Aluminum Oxide

and Aldehyde are oxidised by tollens reagent or benedicts solutiona and not dichromate

Yeah for reduction, and you can use hot copper II oxide and acidified permanganate aswell for all oxidations, and tollens and benedicts aswell for aldehydes.

also, for alkenes conc. h2so4 yeh?.

would conc HCL be ok

see for preparation of benzoic acid calcs., how do u work oput the %age yield?

e.g. 3.75g of ethyl benzoate was refluxed with sodium hydroxide solution for 30m minutes...... the mass of benzoic acid obtained was 1.83g. Express this as a %age yield?

wel u have to use that but need to work out the theoretical mass of benzoic or something like that