Chemical equilibrium — Question 4

Original QCE Vault practice · 1 mark

Q4 · Practice questionSimple familiar1 mark

QUESTION 4

Which expression represents

K_{c}

for

C a C O_{3} (s) ⇌ C a O (s) + C O_{2} (g)

(A)

\frac{[C a O] [C O_{2}]}{[C a C O_{3}]}

(B)

[C O_{2}]

(C)

\frac{1}{[C O_{2}]}

(D)

[C a C O_{3}]

ABCD

Question linkSyllabus coverage

Related questions

Q7 · 2025 QCAA · Paper 1 · 1 mark
QUESTION 7 Which of the following is exchanged with the surroundings when a chemical reaction reaches dynamic equilibrium? (A) gases (B) matter (C) energy (D) products
Chemical equilibrium
Q17 · 2025 QCAA · Paper 1 · 1 mark
QUESTIONS 17–18 Questions 17–18 refer to the relationship between the concentration of nitrogen (N2), hydrogen (H2) and ammonia (NH3) in a closed system, as shown. N2(g) + 3H2(g)  2NH3(g) + heat NH3 Concentration (mol L−1) H2 N2 t1 Time (min)
QUESTION 17 Determine the equilibrium law expression (Kc) for the reaction. [ ] 2 NH 3 (A) K = c [ ] [ ] N 3 H 2 2…
Chemical equilibrium
Q18 · 2025 QCAA · Paper 1 · 1 mark
QUESTIONS 17–18 Questions 17–18 refer to the relationship between the concentration of nitrogen (N2), hydrogen (H2) and ammonia (NH3) in a closed system, as shown. N2(g) + 3H2(g)  2NH3(g) + heat NH3 Concentration (mol L−1) H2 N2 t1 Time (min)
QUESTION 18 Determine the change applied to the system at t1. (A) N2(g) was added. (B) Pressure was increased. (C…
Chemical equilibrium
Q19 · 2025 QCAA · Paper 1 · 1 mark
QUESTIONS 19–20 Questions 19–20 refer to the reversible chemical reaction and enthalpy level diagram shown. 2AB2(g) + B2(g)  2AB3(g) 100 80 Energy (kJ mol−1) 60 40 20 0 Progress of forward reaction QUESTION 19 Which statement is true for the forward reaction? (A) Energy is a product. (B) The reaction is endothermic. (C) Enthalpy change (ΔH) is positive.…
Chemical equilibrium

Chemical equilibrium — Question 4

QUESTION 4

Answer B

Related questions