Zadanie 3d
Wzorowane na: Chemistry SL Paper 2, May 2022, TZ1, pytanie 3(d). Treść, dane i kontekst są zmienione; sprawdzane umiejętności, format i punktacja jak w oryginale.
Darmowe konto pozwoli wrócić do niego później.
Informacja do zadań 3a-3f.
Zinc is a reactive metal found in alloys such as brass. Magnesium is another reactive metal, and its organometallic compounds are widely used in organic synthesis.
Polecenie
Compound B, shown below, can also be made by the hydration of an alkene. The same reaction also gives a smaller amount of the isomer 3-methylbutan-2-ol, (CH3)2CHCH(OH)CH3.
(i) Draw the structural formula of the alkene that is needed.
(ii) Deduce the structural formula of the repeating unit in the addition polymer that this alkene would form.
Sprawdź rozwiązanieUkryj rozwiązanieKlucz i punktacja
Odpowiedź z klucza
(i) (CH3)2C=CHCH3 / 2-methylbut-2-ene ✔
(ii) −C(CH3)2−CH(CH3)− «the two carbon atoms of the former double bond, with a continuation bond at each end» ✔
Schemat punktowania
(i) [1]; the double bond must be between C2 and C3. (ii) [1]; missing brackets or the subscript n are ignored, but the bonds extending from both carbon atoms must be drawn.