Home/Chemical Equilibrium
Determination of equilibrium constant and its units
Question#1
In the reaction \( A + 2B \leftrightarrow 2C \) , if 2 moles of A, 3.0 moles of B and 2.0 moles of C are placed in a 2.0L flask and the equilibrium concentration of C is 0.5 mole/ L . The equilibrium constant Kc for the reaction is [KCET 1996]
Question#2
In a chemical equilibrium, the rate constant of the backward reaction is 7.5 x 10-4 and the equilibrium constant is 1.5. So the rate constant of the forward reaction is [KCET 1989]
Question#3
A mixture of 0.3 mole of H2 and 0.3 mole of I2 is allowed to react in a 10 litre evacuated flask at 500oC . The reaction is \( H_2 + I_2 \leftrightarrow 2HI \) , the K is found to be 64. The amount of unreacted I2 at equilibrium is [KCET 1990]
Question#4
A quantity of PCl5 was heated in a 10 litre vessel at 250oC \( PCl_5 (g) \leftrightarrow PCl_3(g) + Cl_2 (g) \) . At equilibrium the vessel contains 0.1 mole of PCl5 0.20 mole of PCl3 and 0.2 mole of Cl 2. The equilibrium constant of the reaction is [KCET 1993, 2001; MP PMT 2003]
Question#5
For the reaction \( 2SO_2 + O_2 ? 2SO_3 \) , the units of Kc are [CPMT 1990]
