
ALCOOLI (fara prop. chimice)
Authored by Anca Timotin
Chemistry
11th Grade
Used 1+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Alcoolii sunt:
compuși chimici cu grupa hidroxil (-OH) legata de inel aromatic
substanțe cu grupa carboxil (-COOH)
compusi organici fără oxigen
compuși chimici cu grupa hidroxil (-OH) legata de Csp3
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Mentolul si colesterolul se aseamana prin:
NE
numarul de atomi de carbon
tipul grupei functionale hidroxil
stare naturala
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Este adevarata afirmatia:
metanolul se mai numeste "spirt alb"
etanolul are p.f. mai mare decat glicolul
alcoolul cetilic si alcoolul oleic au acelasi numar de atomi de catbon
2 - butanol prezinta are molecula chirala
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Nu se poate obtine prin aditia apei la o alchena (regula Lui Markovnikov):
2-pentanol
izopropanol
1-butanol
2-metil-2-propanol
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Este adevarata afirmatia, cu exceptia:
C3H8O prezinta 3 izomeri
p.f. glicerol este mai mare decat p.f. glicol
pentru fermentatia alcoolica a glucozei, raportul molar oxigen:etanol:CO2 este 1:1:1
exista un singur alcool nular
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Este adevarata afirmatia:
unghiul dintre legăturile C-O-H este, in majoritatea alcoolilor, identic cu valoarea unghiului dintre legăturile H-O-H
alcoolii formează asocieri moleculare de tipul (R-OH)n in orice stare de agregare
alcoolii au puncte de fierbere şi de topire ridicate, vâscozitate şi tensiune de suprafaţă (tensiune superficială) mari deoarece se asociaza prin legaturi de hidrogen
amestecul etanol+apa+CCl4 este omogen
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Metanolul nu este folosit drept combustibil din cauza
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