Equilibrium questions
1777 published questions with worked solutions.
- A sample of Na_2CO_3 H_2O weighing 0.62 g is added to 100 mL of 0.1 N (NH_4)_2SO_4 solution. What will be the resulting solution?
- **Assertion:** A solution of FeCl_3 in water produces a brown precipitate on standing. **Reason:** Hydrolysis of FeCl_3 takes...
- The species which acts as a Lewis but not a Bronsted acid is:
- **Assertion:** Methyl orange is used as an indicator in Na_2CO_3 titrating against HCl solution. **Reason:** The pH range of...
- **Assertion:** Solubility of BaSO_4 in 0.1 M Na_2SO_4 is 10^ -9 M, hence its K_ sp is 10^ -18 . **Reason:** Because for BaSO_4,...
- At dynamic chemical equilibrium, the ratio of the rate of the forward reaction to the rate of the backward reaction is:
- A chemical reaction attains equilibrium when the Gibbs free energy change ( G) accompanying the reaction is:
- The equilibrium constant for the reaction A + B AB is 0.5 at 200 K . The equilibrium constant for the reverse reaction AB A + B...
- For the reversible reaction A + B C, the rate constants for the forward and reverse reactions are 4 10^2 and 2 10^2 respectively....
- In the reaction A + B AB, if the equilibrium concentrations of both A and B are doubled at constant temperature, the equilibrium...
- For a homogeneous gaseous chemical reaction, K_p = K_c when n_g (moles of gaseous products minus moles of gaseous reactants)...
- One mole of ethanol is treated with one mole of ethanoic acid at 25^ C . Half of the acid changes into ester at equilibrium. The...
- How many of the following combinations of reactants will react until more than 98% of the limiting quantity is used up? (a)...
- How many of the following 0.1 M solutions: a. NH₄Cl b. NaOH c. HC₂H₃O₂ d. NaCl e. NH₃+NH₄Cl f. NH₃ g. HCl h. HClO₄ i. (NH₄)₂SO₄...
- Calculate the pH at the equivalence point when a solution of 10⁻⁶ M CH₃COOH is titrated with a solution of 10⁻⁶ M NaOH. Kₐ for...
- What is the sum of the "magic numbers" of all solutions given below? (Integer value is between 50 and 60.) Magic number = pH of...
- How many of the following 0.1 M solutions are acidic? a. NH₄Cl b. NaOH c. HC₂H₃O₂ d. NaCl e. NH₃+NH₄Cl f. NH₃ g. HCl h. HClO₄ i....
- Consider the following seven salts dissolved in water at 25^ C : (i) CH _3 COONH _4, (ii) C _6 H _5 COONH _4, (iii) CH _3 COONa ,...
- How many of the following: a. NH₄Cl b. NaOH c. HC₂H₃O₂ d. NaCl e. NH₃+NH₄Cl f. NH₃ g. HCl h. HClO₄ i. (NH₄)₂SO₄ j. K₂SO₄, are...
- How many of the following combinations of reactants will react less than 2% of the theoretically possible extent? (a) CH₃COOH +...
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Alcohols, Phenols and EthersAldehydes, Ketones and Carboxylic AcidsAlternating CurrentAminesAnatomy of Flowering PlantsAncient Indian HistoryAnimal KingdomApplication of DerivativesArea Under CurveAromatic Compounds and Aryl HalidesAtomsBasic Mathematics and LogarithmBinomial TheoremBiodiversity and ConservationBiological ClassificationBiomoleculesBiotechnology and Its ApplicationsBiotechnology: Principles and ProcessesBody Fluids and CirculationBreathing and Exchange of GasesCell Cycle and Cell DivisionCell: The Unit of LifeChemical Bonding and Molecular StructureChemical Coordination and Integration