Retro JEE Main (Compilation of Last 13 Years Questions)
IIT JEE (Main & Advanced) past year questions with solutions & answer key
Retro IIT JEE (Main and Advanced) have questions from previous/past (10 to 13 years) papers
of IIT JEE (Main and Advanced) with solutions,
The following set of questions contain previous/past (10 to 13 years) questions of IIT JEE
(Main and Advanced) of Chapter "Chemical Equilibrium" with solutions
Q. For the reaction,
if Kp = Kc (RT)x where the sym bols have usual meanings then, the value of x is (assuming ideality).
(JEE Main 2014)
The equilibrium constant (Kc) for the reaction N2(g) + O2(g) → 2NO (g) at tem perature T is 4 x 10-4.
The value of Kc for the reaction temperature is
A vessel at 1000 K contains CO2 with a pressure of 0.5 atm. Some of the CO2 is converted into CO on the addition of graphite. If the total pressure at equilibrium is 0.8 atm, the value of Kp is
For the following three reactions I, II and III, equilibrium constants are given
Q. Which of the following relations is correct?
The equilibrium constants and for the reactions , respectively are in the ratio of 1 : 9. If the degree of dissociation of X and Z be equal, then the ratio of total pressure at these equilibria is
The Equilibrium constant Kc for the reaction
is 4.9x 10-2. The value of Kc for the reaction
Phosphorus pentachloride dissociates as follows, in a closed reaction vessel,
If total pressure, at equilibrium, of the reaction mixture is p and degree of dissociation of PCI5 is x, the partial pressure Of PCI3 Will be
An amount of solid NH4HS is placed in a flask already containing ammonia gas at a certain temperature and 0.50 atm pressure. Ammonium hydrogen sulphide decomposes to yield NH3 and H2S gases in the flask.
When the decomposition reaction reaches equilibrium, the total pressure in the flask rises to 0.84 atm. The equilibrium constant for the decomposition of NH4HS at this temperature is
For the reaction,
[Kc = 1.8x 10-6 at 184°C, R = 0.00831 kJ/(mol K)]
When Kp and Kc are compared at 184°C it is found that
The exothermic formation of CIF3 is represented by the equation
Q. Which of the following will increase the quantity of CIF3 in an equilibrium mixture of Cl2, F2 and CIF3?
What is the equilibrium expression for the reaction
For the reaction, the Kp / Kc is equal to
For the reaction equilibrium, the concentrations of N2O4 and NO2 at equilibrium are 4.8 x 10-2 and 1.2 x 10-2 mol L-1, respectively. The value of Kc for the reaction is
Consider the reaction equilibrium,
On the basis of Le-Chatelier’s principle, the condition favourable for the forward reaction is
For the following reaction in gaseous phase
One of the following equilibria is not affected by change in volume of the flask