Zadanie 34
Wzorowane na: Chemistry HL Paper 1, May 2024, TZ1, pytanie 34. Treść, dane i kontekst są zmienione; sprawdzane umiejętności, format i punktacja jak w oryginale.
Darmowe konto pozwoli wrócić do niego później.
Polecenie
Which compound is the organic product when CH3CH2COOH and CH3CH2CH(OH)CH3 are heated together in the presence of concentrated sulfuric acid?
A. CH3CH2COCH(CH3)CH2CH3
B. CH3CH2CH(CH3)COOCH2CH3
C. CH3CH2COOCH(CH3)CH2CH3
D. CH3CH2COOCH2CH2CH2CH3
Sprawdź rozwiązanieUkryj rozwiązanieKlucz i punktacja
Odpowiedź z klucza
C ✔
«the carboxylic acid and the alcohol join in a condensation (esterification) reaction with the loss of water: the CH3CH2CO− group of propanoic acid is bonded to the oxygen of the alcohol, which keeps its branched −CH(CH3)CH2CH3 group, giving CH3CH2COOCH(CH3)CH2CH3; A has no ester oxygen, B mixes up the carbon chains of the acid and the alcohol, and D comes from the unbranched alcohol»
Schemat punktowania
One mark for the correct option.