The Equilibrium Constant,K_P,for the Reaction H₂(g)+ I₂(g) 2HI(g)is 55

question 129

Multiple Choice

The equilibrium constant,K_P,for the reaction H₂(g) + I₂(g) 2HI(g) is 55.2 at 425°C.A rigid cylinder at that temperature contains 0.127
Atm of hydrogen,0.134 atm of iodine,and 1.055 atm of hydrogen iodide.Is the system at equilibrium?

• A)Yes.
• B)No,the forward reaction must proceed to establish equilibrium.
• C)No,the reverse reaction must proceed to establish equilibrium.
• D)I need to know the volume of the container before deciding.
• E)Need to know the starting pressures of all substances before deciding.

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Definitions:

September

The ninth month of the Julian and Gregorian calendars, known for marking the transition from summer to autumn in the Northern Hemisphere.

Materials Quantity Variance

The difference between the actual quantity of materials used in production and the standard quantity expected to be used, multiplied by the standard cost per unit of material.

Labor Efficiency Variance

The difference between the actual hours worked and the standard hours expected, multiplied by the standard labor rate.

June

The sixth month of the year in the Gregorian calendar.