250 G of HI(g) Is Injected into a 4

question 4

Multiple Choice

25.0 g of HI(g) is injected into a 4.00 L reaction vessel that contains 20.0 g of I₂(g) . When the system comes to equilibrium at 400ºC, what will be the total pressure inside the reaction vessel?
2HI(g) ⇌ H₂(g) + I₂(g) , K_c = 0.0156 at 400ºC

• A) 2.70 atm
• B) 13.0 atm
• C) 2.43 atm
• D) 0.815 atm
• E) 3.24 atm

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