A 25.00-L vessel at 700 K initially contains HI(g) at a pressure of 6.00 atm; at equilibrium, it is found that the partial pressure of H2(g) is 0.581 atm. What is the partial pressure of HI(g) at equilibrium?
2HI(g) H2(g) + I2(g)
a. 6.00 atm
b. 5.42 atm
c. 4.84 atm
d. 6.58 atm
e. 0.581 atm
Answer: c. 4.84 atm