Zadanie 4a
Wzorowane na: Chemistry SL Paper 2, May 2026, TZ2, pytanie 4(a). Treść, dane i kontekst są zmienione; sprawdzane umiejętności, format i punktacja jak w oryginale.
Darmowe konto pozwoli wrócić do niego później.
Polecenie
Compound X is a flavour compound that occurs in many plants. Its structure is shown below.
(i) State the IUPAC name of compound X.
(ii) State the name of the functional group represented by the C=O bond itself in compound X.
(iii) Predict the size of the H–C=O bond angle in compound X.
(iv) Sketch the full structural formula of the organic product formed when compound X is reduced.
Sprawdź rozwiązanieUkryj rozwiązanieKlucz CKE i punktacja
Odpowiedź z klucza
(i) 3-methylbutanal ✔
(ii) carbonyl ✔
(iii) 120° ✔
(iv) full structural formula of 3-methylbutan-1-ol, (CH3)2CHCH2CH2OH, with every bond drawn: both methyl groups, the CH group, two CH2 groups and the O–H bond, all C–H bonds shown ✔
Schemat punktowania
(i) [1] 3-methylbutanal. (ii) [1] carbonyl; do not accept ‘aldehyde’. (iii) [1] 120°. (iv) [1] every bond must be shown; do not accept condensed or skeletal formulas or the molecular formula.