Equilibrium questions
1777 published questions with worked solutions.
- If a system is at equilibrium, the rate of forward to the reverse reaction is [UP SEE 2004]
- A+B=C+D. If initially the concentration of A and B are both equal but at equilibrium, concentration of D will be twice that of A,...
- Phosphorus pentachloride dissociates as follows, in a closed reaction vessel, PCl_5(g) PCl_3(g)+Cl_2(g). If total pressure at...
- For the reaction PCl_5(g) PCl_3(g)+Cl_2(g), the correct relation is [MP PET 2003]
- The equilibrium constant for the reaction N_2(g)+O_2(g) 2NO(g) at temperature T is 4 10^ -4 . The value of K_c for the reaction...
- A(g)+3B(g) 4C(g). Initially concentration of A is equal to that of B. The equilibrium concentrations of A and C are equal. K_c is
- The equilibrium, P_4(s)+6Cl_2(g) 4PCl_3(g) attained by mixing equal moles of P_4 and Cl_2 in an evacuated vessel. Then, at...
- For the reaction, H_2+I_2 2HI, the equilibrium concentration of H_2, I_2 and HI are 8.0, 3.0 and 28.0 mol/L respectively. The...
- 15 moles of H_2 and 5.2 moles of I_2 are mixed and allowed to attain equilibrium at 500°C. At equilibrium, the concentration of...
- 3 moles of A and 4 moles of B are mixed together and allowed to come into equilibrium according to the following reaction,...
- For a chemical reaction at dynamic equilibrium, which of the following is ALWAYS correct? **[OJEE 2009]**
- Equivalent amounts of H_2 and I_2 are heated in a closed vessel till equilibrium is obtained. If 80% of the hydrogen can be...
- The equilibrium constant for the reaction SO_2(g)+ 1 2 O_2(g) SO_3(g) is 5 10^ -2 atm ^ -1/2 . The equilibrium constant for the...
- For the homogeneous gaseous reaction PCl _3(g) + Cl _2(g) PCl _5(g), the equilibrium constant K_c has the units: **[RPET 2010]**
- Two moles of PCl_5 were heated in a closed vessel of 2 L. At equilibrium 40% of PCl_5 is dissociated into PCl_3 and Cl_2. The...
- Final pressure is higher than initial pressure of a container filled with an ideal gas at constant temperature. What will be the...
- In which of the following reactions, the concentration of product is higher than the concentration of reactant at equilibrium?...
- For which of the following reactions, K_p=K_c? [J & K CET 2003]
- For the reaction, N_2(g)+O_2(g) 2NO(g), the value of K_c at 800°C is 0.1. When the equilibrium concentration of both the...
- In aqueous solution, the ionisation constants for carbonic acid are K_ a1 4.2 10^ -7 and K_ a2 4.8 10^ -11 . Select the correct...
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