Zadanie 19a
Wzorowane na: Chemistry HL Paper 3, May 2023, TZ1, pytanie 19(a). Treść, dane i kontekst są zmienione; sprawdzane umiejętności, format i punktacja jak w oryginale.
Darmowe konto pozwoli wrócić do niego później.
Polecenie
Ephedrine is a decongestant found in some cold remedies. Its structure is shown.
Deduce which two carbon atoms in a molecule of ephedrine are chiral. For each of them, state the four different atoms or groups bonded to it.
Sprawdź rozwiązanieUkryj rozwiązanieKlucz i punktacja
Odpowiedź z klucza
the carbon atom bonded to the -OH group, with H, OH, C6H5 and CH(CH3)NHCH3 ✔
the carbon atom bonded to the -NHCH3 group, with H, NHCH3, CH3 and CH(OH)C6H5 ✔
Schemat punktowania
Award [1] for each correctly identified chiral carbon atom with its four different groups. Accept a description by position, such as "the carbon next to the benzene ring that carries the OH group". Apply the list principle if more than two carbon atoms are named.