Problem: Under which circumstances are Kp and Kc equal for the reaction aA(g) + bB(g) ⇌ cC(g) + dD(g)?a. If a + b = c + db. If the reaction is irreversible.c. The equilibrium constant is small. 

FREE Expert Solution

When dealing with equilibrium:

Kc → equilibrium units are in molarity 
Kp → equilibrium units in terms of pressure


Kp and Kc are related to one another by the following equation below: 

Kp=KcRTn


R = gas constant = 0.08206 (Latm)/(molK)
T = temperature, K
Δn = moles of gas products – moles of gas reactants


81% (462 ratings)
View Complete Written Solution
Problem Details

Under which circumstances are Kp and Kc equal for the reaction aA(g) + bB(g) ⇌ cC(g) + dD(g)?

a. If a + b = c + d

b. If the reaction is irreversible.

c. The equilibrium constant is small. 


Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Chemical Equilibrium concept. You can view video lessons to learn Chemical Equilibrium. Or if you need more Chemical Equilibrium practice, you can also practice Chemical Equilibrium practice problems.