Author Question: A quantity of liquid methanol, CH3OH, is introduced into a rigid 3.00-L vessel, the vessel is ... (Read 61 times)

dongbo · **on:** Nov 5, 2023

Question 1

75.0 g of PCl₅(g) is introduced into an evacuated 3.00 L vessel and allowed to reach equilibrium at 250ºC.
PCl₅(g)

PCl₃(g) + Cl₂(g)
If K_p = 1.80 for this reaction, what is the total pressure inside the vessel at equilibrium?
◦ 2.88 atm
◦ 2.27 atm
◦ 4.54 atm
◦ 7.42 atm
◦ 9.69 atm

Question 2

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 500K. At this temperature, the methanol vaporizes and decomposes according to the reaction
CH₃OH(g)

CO(g) + 2 H₂(g), K_c= 6.90×10^–2.
If the concentration of H₂ in the equilibrium mixture is 0.426M, what mass of methanol was initially introduced into the vessel?
◦ 147 g
◦ 74.3 g
◦ 33.9 g
◦ 49.0 g
◦ 24.8 g

bball_babe_123 · **Reply #1 on:** Nov 5, 2023

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