Zadanie 2b
Wzorowane na: Chemistry SL Paper 2, May 2022, TZ1, pytanie 2(b). Treść, dane i kontekst są zmienione; sprawdzane umiejętności, format i punktacja jak w oryginale.
Darmowe konto pozwoli wrócić do niego później.
Informacja do zadań 2a-2e.
Methanol, CH3OH, is an important industrial chemical used to make plastics, solvents and fuels. It is also the starting material for methylamine, CH3NH2, a gas used in the manufacture of pesticides and medicines.
Polecenie
Draw the Lewis (electron dot) structure of a molecule of methanol, CH3OH, showing all valence electrons.
Sprawdź rozwiązanieUkryj rozwiązanieKlucz i punktacja
Odpowiedź z klucza
carbon bonded by single bonds to three hydrogen atoms and to oxygen AND oxygen bonded by a single bond to the fourth hydrogen atom, with two lone pairs on oxygen «no lone pairs on carbon or hydrogen» ✔
Schemat punktowania
[1] for a structure with the correct connectivity (H3C–O–H) in which every bond is a shared pair and the two lone pairs on oxygen are shown. Accept lines, dots or crosses, or a mixture, for electrons. Do not accept a structure with a lone pair missing on oxygen or with an O–O or C=O bond.