(C) 27
(D) 54
(E) 108
- All of the following statements about carbon dioxide are true EXCEPT:
(A) It can be prepared by the action of acid on CaCO 3.
(B) It is used in fire extinguishers.
(C) It dissolves slightly in water at room temperature.
(D) It sublimes rather than melts at 20°C and 1 atm pressure.
(E) It is a product of photosynthesis in plants.
- Three moles of H 2 and 3 moles of I 2 are introduced into a liter box at a
temperature of 490°C. What will the K expression be for this reaction? (K =
45.9)
- If the following reaction has achieved equilibrium in a closed system:
N 2 O 4 (g) 2 NO 2 (g)
which of the following is (are) increased by decreasing the size of the
container?
I. The value of K
II. The concentration of N 2 O 4 (g)
III. The rate of the reverse reaction
(A) I only
(B) III only
(C) I and II only
(D) II and III only
(E) I, II, and III
- Which of the following correctly completes this nuclear reaction:
?
