In Aldol condensation reactions, benzaldehydes react with ketones producing: a)

Question

In Aldol condensation reactions, benzaldehydes react with ketones producing: a) alpha, beta-unsaturated ketones alpha, beta-unsaturated aldehydes c) alpha, beta -unsaturated alcohols d) alpha, beta -unsaturated carboxylic acids The reaction is an example of a crossed aldol condensation where: a) The intermediate hydrates to produce resonance stabilized conjugated alkene b) The intermediate dehydrates to produce resonance stabilized conjugated alkene c) The intermediate hydrates to produce resonance stabilized unsaturated ketones d) The intermediate is dehydrates to produce resonance stabilized unsaturated ketone In this experiment, the reactants may be a liquid or solid. The product is: a) An oily substance which is easy to crystallize b) A solid substance which is easy to recrystallize c) A liquid substance which is easy to crystallize d) A solid substance which is hard to crystallize In this experiment, the name benzaldehyde means that this aldehyde has: a) A benzene ring as part of its structure b) An alcohol as part of the structure c) An ether as part of the structure d) A ketone as part of the structure In this experiment, the manual instructs that all filtrates should be: a) Poured into a waste container designated for all organic wastes b) Poured into a waste container designated for nonhalogenated organic wastes c) Poured into a waste container designated for non organic wastes d) There is no designation. The wastes can be poured in any container In this experiment, the instruction is: a) Use 0.150 g of piperonaldehyde or 0.151g of3-nitrobenzaldehyde b) Use 0.151 g of piperonaldehyde or 0.150g of 3-nitrobenzaldehyde c) Use 0.75 ml of liquid and 0.65 ml of liquid reagents d) Use 1.50 g of piperonaldehyde or 1.51g of 3-nitrobenzaldehyde In this experiment, the instruction says: a) Swirl the flask gently to completely mix the reagents b) Stir the mixture with microspatula to completely dissolve the mixture c) Place flask on bath ice to mix the reagents d) Place the flask in warm water to hasten dissolving the mixture In this experiment, the instruction says to: a) Add 1.0 ml of NaoH to the mixture b) Add 0.10 ml of NaoH to the mixture c) Add 0.5 ml HCl to the mixture d) Add 1.0 ml of HCl to the mixture

Explanation / Answer

1) They produce , - unsaturated ketones, Option a)
2) Option d) is the answer
3) option c)
4) Benzene is the part of the structure, -CHO attached to benzene ring forms benzaldehyde, option a)

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