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A Quantity of Liquid Methanol, CH3OH, Is Introduced into a Rigid

Question 101

Multiple Choice

A quantity of liquid methanol, CH3OH, is introduced into a rigid 3.00-L vessel, the vessel is sealed, and the temperature is raised to 500 K. At this temperature, the methanol vaporizes and decomposes according to the reaction CH3OH(g) A quantity of liquid methanol, CH<sub>3</sub>OH, is introduced into a rigid 3.00-L vessel, the vessel is sealed, and the temperature is raised to 500 K. At this temperature, the methanol vaporizes and decomposes according to the reaction CH<sub>3</sub>OH(g) CO(g) + 2 H<sub>2</sub>(g) , K<sub>c </sub>= 6.90 × 10<sup>-2</sup> If the concentration of H<sub>2</sub> in the equilibrium mixture is 0.426 M, what mass of methanol was initially introduced into the vessel? A) 147 g B) 74.3 g C) 33.9 g D) 49.0 g E) 24.8 g CO(g) + 2 H2(g) , Kc = 6.90 × 10-2
If the concentration of H2 in the equilibrium mixture is 0.426 M, what mass of methanol was initially introduced into the vessel?


A) 147 g
B) 74.3 g
C) 33.9 g
D) 49.0 g
E) 24.8 g

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