Equilibrium questions
1777 published questions with worked solutions.
- Arrhenius theory of acid-base is not valid for:
- Acetic acid and propionic acid have Ka values 1.75×10⁻⁵ and 1.3×10⁻⁵ respectively at a certain temperature. An equimolar solution...
- If NaOH is added to a solution of acetic acid:
- Hydrolysis of oxide ion in water produces:
- Sulphuric acid is a dibasic acid. Hence, it forms:
- The values of dissociation constant of some acids (at 25°C) are given below. The strongest acid in water is:
- The correct order of increasing [H₃O⁺] in the following aqueous solutions is:
- The relation for calculating pH of a weak base is:
- The pH at which Mg(OH)₂ begins to precipitate from a solution containing 0.10 M Mg²⁺ ions [Ksp of Mg(OH)₂=1×10⁻¹¹] is:
- How many gram of NaOH must be present in one litre of the solution to give it a pH of 12?
- The solubility of BaSO₄ in water is 0.00233 g per litre at 30°C. The solubility of BaSO₄ in 0.1 M (NH₄)₂SO₄ solution at the same...
- 100 mL of 1 N NH₄OH (Kb=5×10⁻⁵) is neutralized to equivalence point by 1 N HCl. The pH of solution at equivalence point is:
- According to Arrhenius concept, base is a substance that:
- The correct statement for the equilibrium is, HClO₄+H₂O⇌H₃O⁺+ClO₄⁻:
- The solubility of A₂X₃ is y mol dm⁻³. Its solubility product is:
- The dissociation of water at 25°C is 1.9×10⁻⁷ percent, the density of water is 1.0 g/cm³. The ionisation constant of water is:
- The solubility product Ksp of a sparingly soluble salt AgIO₃ is 1.0×10⁻⁸ at a given temperature. What is the mass of AgIO₃...
- Which addition would not change the pH of 10 mL of dilute hydrochloric acid?
- The dissociation constant for acetic acid and HCN at 25°C are 1.5×10⁻⁵ and 4.5×10⁻¹⁰ respectively. The equilibrium constant for...
- A certain buffer solution contains equal concentration of X⁻ and HX. The Ka for HX is 10⁻¹¹. The pH of the buffer is:
Other chapters
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