Zadanie 11
Wzorowane na: Chemistry HL Paper 1, November 2024, pytanie 11. Treść, dane i kontekst są zmienione; sprawdzane umiejętności, format i punktacja jak w oryginale.
Darmowe konto pozwoli wrócić do niego później.
Polecenie
Which row correctly states the types of intermolecular force present between molecules of ethane, methylamine and fluoromethane?
A. Ethane: London (dispersion) forces only; methylamine: London forces, dipole-dipole forces and hydrogen bonding; fluoromethane: London forces and dipole-dipole forces
B. Ethane: London forces only; methylamine: London forces and dipole-dipole forces only; fluoromethane: London forces, dipole-dipole forces and hydrogen bonding
C. Ethane: London forces and dipole-dipole forces; methylamine: London forces and hydrogen bonding only; fluoromethane: London forces only
D. Ethane: London forces and hydrogen bonding; methylamine: London forces, dipole-dipole forces and hydrogen bonding; fluoromethane: London forces and dipole-dipole forces
Sprawdź rozwiązanieUkryj rozwiązanieKlucz i punktacja
Odpowiedź z klucza
A ✔
«ethane is non-polar, so only London forces act; methylamine has polar bonds and an N−H bond, so it has London forces, dipole-dipole forces and hydrogen bonding; fluoromethane is polar but its hydrogen atoms are bonded to carbon, so it has London and dipole-dipole forces but no hydrogen bonding»
Schemat punktowania
One mark for the correct option.