Quiz — 642d4746ebf7f_corrigé_série 1 les Amides-1-.pdf

Question 1 sur 10 20:00

[{"id":32940,"question":"Quel est le groupe fonctionnel caractéristique des amides ?","option_a":"-OH","option_b":"-COOH","option_c":"-CONH2","option_d":"-CHO","option_e":"","option_f":"","bonne_reponse":"c","explication":"Le groupe -CONH2 est le groupe fonctionnel des amides, où l'azote est lié à un groupe carbonyle (C=O).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"c\", \"options\": {\"a\": \"-OH\", \"b\": \"-COOH\", \"c\": \"-CONH2\", \"d\": \"-CHO\"}}","_debug_options_count":4},{"id":32941,"question":"Un amide tertiaire peut former des liaisons hydrogène.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"Un amide tertiaire (R-CONR2) ne peut pas former de liaisons hydrogène car il ne possède pas d'atome d'hydrogène sur l'azote.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":32942,"question":"Quel réactif permet de transformer un acide carboxylique en amide ?","option_a":"NaOH","option_b":"NH3 puis chauffage","option_c":"HCl dilué","option_d":"KMnO4","option_e":"","option_f":"","bonne_reponse":"b","explication":"L'ammoniac (NH3) suivi d'un chauffage permet de substituer le groupe -OH de l'acide carboxylique par -NH2, formant un amide.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"NaOH\", \"b\": \"NH3 puis chauffage\", \"c\": \"HCl dilué\", \"d\": \"KMnO4\"","_debug_options_count":4},{"id":32943,"question":"La réaction d'hydrolyse d'un amide donne :","option_a":"un alcool et un acide carboxylique","option_b":"un acide carboxylique et une amine","option_c":"un aldéhyde et de l'ammoniac","option_d":"un ester et de l'eau","option_e":"","option_f":"","bonne_reponse":"b","explication":"L'hydrolyse d'un amide en milieu acide ou basique produit un acide carboxylique et une amine (ou ammoniac).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"un alcool et un acide carboxylique\", \"b\": \"un acide carboxylique ","_debug_options_count":4},{"id":32944,"question":"Les amides sont généralement solubles dans l'eau.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Les amides primaires et secondaires sont solubles dans l'eau grâce aux liaisons hydrogène avec les molécules d'eau.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":32945,"question":"Quel est le nom IUPAC du composé CH3CONHCH3 ?","option_a":"N-méthyléthanamide","option_b":"N-éthylméthanamide","option_c":"propionamide","option_d":"acétamide","option_e":"","option_f":"","bonne_reponse":"a","explication":"Le composé CH3CONHCH3 est nommé N-méthyléthanamide, car le groupe méthyle est lié à l'azote (N-substitué).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"N-méthyléthanamide\", \"b\": \"N-éthylméthanamide\", \"c\": \"propion","_debug_options_count":4},{"id":32946,"question":"La réduction d'un amide par LiAlH4 donne :","option_a":"un alcool primaire","option_b":"une amine primaire","option_c":"un aldéhyde","option_d":"un acide carboxylique","option_e":"","option_f":"","bonne_reponse":"b","explication":"La réduction d'un amide par LiAlH4 conduit à une amine primaire (R-CH2-NH2).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"un alcool primaire\", \"b\": \"une amine primaire\", \"c\": \"un aldéhyd","_debug_options_count":4},{"id":32947,"question":"Les amides sont plus basiques que les amines.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"Les amides sont moins basiques que les amines car le doublet non liant de l'azote est délocalisé dans le groupe carbonyle (C=O).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":32948,"question":"Quel est le produit de la réaction entre l'éthanamide et l'eau en milieu acide ?","option_a":"CH3COOH + NH3","option_b":"CH3CHO + NH3","option_c":"CH3CH2OH + NH3","option_d":"CH3COO- + NH4+","option_e":"","option_f":"","bonne_reponse":"a","explication":"En milieu acide, l'éthanamide (CH3CONH2) s'hydrolyse en acide éthanoïque (CH3COOH) et ammoniac (NH3).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"CH3COOH + NH3\", \"b\": \"CH3CHO + NH3\", \"c\": \"CH3CH2OH + NH3\", \"d\": ","_debug_options_count":4},{"id":32949,"question":"La polymérisation des amides conduit à la formation de :","option_a":"des protéines","option_b":"des polyesters","option_c":"des polyamides","option_d":"des polyalcènes","option_e":"","option_f":"","bonne_reponse":"c","explication":"La polymérisation des amides (par exemple, la réaction entre un diacide et une diamine) forme des polyamides, comme le nylon.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"c\", \"options\": {\"a\": \"des protéines\", \"b\": \"des polyesters\", \"c\": \"des polyamides\", \"d","_debug_options_count":4}]