Multiple Choice
Methanol can be synthesized by combining carbon monoxide and hydrogen. CO(g) + 2H2(g) 
CH3OH(g) ΔH°rxn = -90.7 kJ
A reaction vessel contains these compounds at equilibrium. What effect will be seen when equilibrium is re-established after decreasing the temperature by 45°C?
A) All the partial pressures will decrease.
B) The partial pressure of methanol will decrease.
C) The partial pressures of hydrogen and methanol will decrease.
D) The partial pressure of hydrogen will increase.
E) The partial pressure of carbon monoxide will decrease.
Correct Answer:
Verified
Correct Answer:
Verified
Q14: The two equilibrium constants for the same
Q55: Unless ΔH°<sub>rxn</sub> = 0, a change in
Q63: At 850°C, the equilibrium constant Kp for
Q65: In water, the following equilibrium exists: H<sup>+</sup>(aq)
Q67: At a certain temperature the reaction CO<sub>2</sub>(g)
Q69: Write the mass-action expression, <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB7800/.jpg" alt="Write
Q70: The reaction quotient, <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB7800/.jpg" alt="The reaction
Q71: The following reaction is at equilibrium at
Q72: Write the mass-action expression, <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB7800/.jpg" alt="Write
Q83: A chemical reaction will reach equilibrium when