Equilibrium questions
1777 published questions with worked solutions.
- If 1 mM solution of ethylamine produces pH = 9, then the ionization constant (Kb) of ethylamine is 10^ -x . The value of x is...
- K_ sp for Cr(OH)_3 is 1.6 10^ -30 . What is the molar solubility of this salt in water?
- 37.8 g N_2O_5 was taken in a 1 L reaction vessel and allowed to undergo the following reaction at 500 K 2N_2O_5(g) 2N_2O_4(g) +...
- A weak acid HA has degree of dissociation x. Which option gives the correct expression of pH – pK_a) ?
- Arrange the following in increasing order of solubility product : Ca(OH)2, AgBr, PbS, HgS
- At temperature T, compound AB_ 2(g) dissociates as AB_ 2(g) AB_ (g) + 1 2 B_ 2(g) having degree of dissociation x (small compared...
- Consider the equilibrium CO(g) + 3H_2(g) CH_4(g) + H_2O(g) If the pressure applied over the system increases by two fold at...
- Consider the following chemical equilibrium of the gas phase reaction at a constant temperature: A(g) B(g) + C(g) If p being the...
- If equal volumes of AB₂ and XY (both are salts) aqueous solutions are mixed, which of the following combination will give a...
- Consider the following equilibrium, CO(g) + 2H₂(g) CH₃OH(g) 0.1 mol of CO along with a catalyst is present in a 2 dm³ flask...
- Given below are two statements : Statement (I) : A catalyst cannot alter the equilibrium constant (K_C) of the reaction,...
- The pH of a 0.01 M weak acid HX (Ka = 4 × 10⁻¹⁰) is found to be 5. Now the acid solution is diluted with excess of water so that...
- HA(aq) H^+(aq) + A^-(aq) The freezing point depression of a 0.1 m aqueous solution of a monobasic weak acid HA is 0.20°C the...
- The equilibrium constant for decomposition of H_2O(g) H_2(g) + 1 2 O_2(g) ( G^o = 92.34 kJ mol^ -1 ) is 8.0 × 10^ -3 at 2300 K...
- x mg of Mg(OH)_2 (molar mass = 58) is required to be dissolved in 1.0 L of water to produce a pH of 10.0 at 298 K. The value of x...
- One litre buffer solution was prepared by adding 0.10 mol each of NH₃ and NH₄Cl in deionised water. The change in pH on addition...
- For the reaction SO_ 2(g) + 1 2 O_ 2(g) SO_ 3(g) , if K_P = K_C(RT)^x where the symbols have usual meaning then the value of x...
- The equilibrium constant at 298 K for a reaction A + B C + D is 100. If the initial concentration of all the four species were 1...
- pK_a of a weak acid (HA) and pK_b of a weak base (BOH) are 3.2 and 3.4, respectively. The pH of their salt (AB) solution is-
- An aqueous solution contains 0.10 M H_2S and 0.20 M HCl. If the equilibrium constants for the formation of HS^- from H_2S is 1.0...
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