Zadanie 30
Wzorowane na: Chemistry HL Paper 1A, May 2026, TZ3, pytanie 30. Treść, dane i kontekst są zmienione; sprawdzane umiejętności, format i punktacja jak w oryginale.
Darmowe konto pozwoli wrócić do niego później.
Polecenie
At 700 K the equilibrium constant, K, of the reaction below is 54.0.
H2(g) + I2(g) ⇌ 2 HI(g)
At one moment the mixture contains:
| Compound | H2 | I2 | HI |
|---|---|---|---|
| Concentration / mol dm-3 | 0.0200 | 0.0150 | 0.150 |
What can be concluded about the mixture at this moment?
A. The system is at equilibrium and no change in any concentration will occur
B. The system is not at equilibrium and the reaction will proceed towards the products
C. The system is not at equilibrium and the reaction will proceed towards the reactants
D. The system is not at equilibrium and the value of K will change until it equals Q
Sprawdź rozwiązanieUkryj rozwiązanieKlucz CKE i punktacja
Odpowiedź z klucza
C ✔
«, which is greater than K = 54.0, so the system is not at equilibrium and the reaction proceeds towards the reactants until Q = K»
Schemat punktowania
1 mark for the correct option.
Komentarz
K depends only on temperature; the composition adjusts until Q equals K.