Equilibrium questions
1777 published questions with worked solutions.
- Water acts as an acid in presence of:
- The pH at which an acid indicator with Ka=1×10⁻⁵ changes colour when the indicator concentration is 1×10⁻³ M, is:
- The conjugate acid of S₂O₈²⁻ is:
- 10 mL of a solution contains 0.1 M NH₄Cl + 0.01 M NH₄OH. Which addition of the solution would not change the pH of the solution?
- A student wants to prepare a saturated solution of Ag⁺ ion. He has got three samples AgCl(Ksp=10⁻¹⁰), AgBr(Ksp=10⁻¹³) and...
- In which reaction ammonia acts as an acid?
- Which of the following is most soluble in water?
- The best explanation for the solubility of MnS in dil. HCl is that:
- The solubility of PbCl₂ in water is 0.01 M at 25°C. Its maximum concentration in 0.1 M NaCl will be:
- The auto protonation constant of H₂O is:
- The hydrogen ion concentration of a 10⁻⁸ M HCl aqueous solution at 298 K (Kw=10⁻¹⁴) is:
- The pH of a 0.005 M aqueous solution of sulphuric acid is approximately:
- The phenomenon of interaction of anions and cations furnished by an electrolyte with the H⁺ and OH⁻ ions of water to produce...
- In a buffer solution containing equal concentration of B^- and HB, the K_b for B^- is 10^ -10 . The pH of the buffer solution is:
- 2.5 mL of 2/5 M weak mono acidic base (Kb=1×10⁻¹² at 25°C) is titrated with 2/15 M HCl in water at 25°C. The concentration of H⁺...
- Aqueous solution of which salt has the lowest pH?
- One litre of water contains 10⁻⁷ mole H⁺ ions. Degree of ionisation of water is:
- The unit of ionic product of water (Kw) is:
- Which of the following molecules acts as a Lewis acid?
- The following equilibrium exists in aqueous solution, CH₃COOH⇌H⁺+CH₃COO⁻. If dilute HCl is added to this solution:
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