Chimie organique - Spécialité

Familles chimiques et spectroscopie IR

Exercice 1 : Identifier le nombre de liaisons d'une molécule

Combiens de liaisons compte une molécule de formule brute suivante ? (Les liaisons doubles comptent pour 2, les triples pour 3).

\(C_{7}H_{16}\)

Exercice 2 : Vocabulaire sur les molécules

Sélectionner parmi les phrases suivantes celles étant vraies :

1.Les liaisons simples résultent de la mise en commun de deux électrons entre deux atomes.
2.Le carbone est un atome tétravalent.
3.Lorsqu'un atome d'hydrogène forme une liaison, il respecte la règle du duet.
4.La formule développée d'une molécule représente les liaisons de tous les atomes.

Exercice 3 : Identifier les bonnes formules semi-développées

Parmi les formules semi-développées suivantes, lesquelles sont correctes ?
A

Exercice 4 : Identifier les groupes caractéristiques d'une molécule (sans Amine, Ester, Amide)

Sélectionner le ou les groupes caractéristiques présents dans la molécule suivante \( \text{(tyramine)} \).

Hydroxyle
Carbonyle
Carboxyle

Exercice 5 : Identifier le type de représentation d'une molécule

Quel est le type de représentation de la molécule suivante (3-éthyl-2-méthylpentane) ?

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