G aldol-3 Aldol Condensation CHEM354Pre-Prelab Questions 1. A student forgot to add the benzaldehyde to his Aldol reaction. Instead of isolating a solid, the student recovered a liquid with a boiling point range of 129o-130oC. The ir showed both a carbonyl and a double bond. The 1H-NMR exhibited a 1H multiplet centered at 5.8 ppm, a 3H singlet at 2.4 ppm, and a 6H broad singlet at 2.1 ppm. Propose a structure for this product and write a mechanism for its formation.

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).

the correct answer is:

a. formation of precipitation

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