Equilibrium questions
1777 published questions with worked solutions.
- If K_p = K_c [RT]^ n for the reaction 2CO_2(g) + 2CaCO_3(s) 2CaC_2(s) + 5O_2(g), n is equal to:
- For the reaction 2A(g) + B(g) 3C(g) + 3D(g), the equilibrium moles of A, B, C and D obtained in an experiment (in a 1 litre...
- Given below are two reversible reactions: A + B Z; K_ c_1 = 24 2B + C 2Y; K_ c_2 = 16 The equilibrium constant K_c for the...
- The rate of disappearance of A in the reaction at equilibrium A B is given by - d[A] dt = 2 10^ -2 [A] - 4 10^ -3 [B] at 300 K....
- If G^ for a reaction is -8290.8 cal, the K_c for the reaction at 300 K is 10^n. The value of n is (take R = 2 cal K^ -1 mol^ -1 ):
- What is the % dissociation of H_2S, if one mole of H_2S is introduced in a 1 litre vessel at 1000 K, if K_c for the reaction...
- For a reversible reaction, K_p K_c = (RT)^ n at 300 K. If K_p K_c = 14941.5 (in litre atm unit) for a given reaction, then n for...
- A certain buffer solution has equal concentration of X^- and HX. K_b for X^- is 10^ -10 . The pH of the buffer is:
- One litre of 1 M solution of an acid HA (K_a = 10^ -4 at 25°C) has pH = 2. It is diluted with water so that the new pH becomes...
- K_ sp of SrF_2 is 1 10^ -10 . The solubility of SrF_2 in 0.1 M NaF is 1 10^ -a M. The value of a is:
- 100 mL of 0.20 M weak acid HA is completely neutralised by 0.20 M NaOH. K_b for A^- is 10^ -3 . The pOH at the equivalence point...
- Two weak acids HA and HB have the same pH when their concentration ratio (C_ HA :C_ HB ) is 3:1. The ratio of the dissociation...
- 10 mL of 0.25 M H_2SO_4 is completely neutralised by 0.125 M solution of NH_3. The pH of the solution at the equivalence point is...
- K_ sp of M(OH)_2 is 5 10^ -16 at 25°C. The pH of its saturated solution at 25°C is:
- The equilibrium constant for the reaction of a strong acid (HA) with a weak base (BOH) is 10^ 11 . The pH of 0.10 M solution of...
- The conjugate base of a weak acid has K_b=10^ -9 . The equilibrium constant for the reaction of the acid with a stronger base...
- K_w of pure water is 10^ -12 at 60°C. The pH of pure water at 60°C is:
- An aqueous solution of 0.24 M aniline (K_b=4.166 10^ -10 ) is mixed with NaOH solution to maintain the anilinium ion...
- In 1 L saturated solution of AgCl [K_ sp (AgCl)=1.6 10^ -10 ], 0.1 mol of CuCl_2 is added. The resultant concentration of Ag^+ in...
- Amongst the following, the total number of compounds whose aqueous solution turns red litmus paper blue is: KCN, (NH_4)_2C_2O_4,...
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