Equilibrium questions
1777 published questions with worked solutions.
- Phenolphthalein is not a good indicator for titrating:
- The ionisation constant of NH₄⁺ in water is 5.6×10⁻¹⁰ at 25°C. The rate constant for the reaction of NH₄⁺ and OH⁻ to form NH₃ and...
- 0.2 molar solution of formic acid is 3.2% ionized. Its ionization constant is:
- The total number of different kinds of buffers obtained during the titration of H₃PO₄ with NaOH are:
- Phenolphthalein is a:
- 20 mL of a 0.1 N HCl is mixed with 20 mL of a 0.1 N KOH solution. The pH of the solution would be:
- The pH of tears coming out of a person's eye is:
- Pure water is kept in a vessel and it remains exposed to atmospheric CO₂ which is absorbed. Then the pH will:
- The solubility of Al(OH)₃ is 's' mol per litre, the solubility product of Al(OH)₃ is:
- The reverse process of neutralization is:
- How many gram of CaC₂O₄ will dissolve in one litre of saturated solution? Ksp of CaC₂O₄ is 2.5×10⁻⁹ M² and its molecular weight...
- The pH of 0.1 M NaHS is, Ka₁ and Ka₂ of H₂S are 1.3×10⁻⁷ and 7.1×10⁻¹⁵ respectively:
- The pH of 7×10⁻⁸ M CH₃COOH is:
- 0.1 M acetic acid solution is titrated against 0.1 M NaOH solution. What would be the difference in pH between 1/4 and 3/4 stages...
- Which of the following solution does not act as buffer?
- The ionization constant of ammonium hydroxide is 1.77×10⁻⁵ at 298 K. Hydrolysis constant of ammonium chloride is:
- 1 mL of 0.1 N HCl is added to 999 mL solution of NaCl. The pH of the resulting solution will be:
- The pH of 1/1000 N KOH solution is:
- Which of the following is not a salt?
- An acid with molecular formula C₇H₆O₃ forms three types of sodium salts, i.e. C₇H₅O₃Na, C₇H₄O₃Na₂ and C₇H₃O₃Na₃. The basicity of...
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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