Equilibrium questions
1777 published questions with worked solutions.
- The degree of hydrolysis of a salt of weak acid and weak base in its 0.1 M solution is found to be 50%. If the molarity of the...
- An aqueous solution contains a substance which yields 4×10⁻³ mol litre⁻¹ of H₃O⁺. If log2=0.3010, the pH of the solution is:
- The increasing order of basic strength of Cl⁻, CO₃²⁻, CH₃COO⁻, OH⁻, F⁻ is:
- Which may be added to one litre of water to act as a buffer?
- The pH of water is 7 at 25°C. If water is heated to 50°C, which of the following should be true?
- The pH of a solution obtained by mixing 10 mL of 0.1 M HCl and 40 mL of 0.2 M H₂SO₄ is:
- 1 M solution of an acid has a pH of 5. Which of the following is the most reasonable explanation for this acid?
- Which does not act as Bronsted acid?
- Which indicator works in the pH range 8-9.8?
- A colourless solution liberates CO₂ gas when added to a metal bicarbonate. The solution is:
- The gastric juice in our stomach contains enough hydrochloride acid to make the hydrogen ion concentration about 0.01 mol/litre....
- The pH of gastric juice is normally:
- At 25°C, the solubility product of Mg(OH)₂ is 1.0×10⁻¹¹. At which pH, will Mg²⁺ ions start precipitating in the form of Mg(OH)₂...
- What happens to pH of a solution when NH₄Cl crystal is added to a dilute solution of NH₄OH?
- Calculate the pOH of a solution at 25°C that contains 1×10⁻¹⁰ M of hydronium ions i.e. H₃O⁺:
- An acid-base indicator has Ka=3.0×10⁻⁵. The acid form of the indicator is red and the basic form is blue. The [H⁺] required to...
- The pH of blood is maintained by CO₂ and H₂CO₃ in the body and chemical constituents of blood. This phenomenon is called:
- What is [H⁺] in mol/L of a solution that is 0.20 M in CH₃COONa and 0.1 M in CH₃COOH? Ka for CH₃COOH is 1.8×10⁻⁵.
- Conjugate acid-base pair differs by a/an:
- The percentage error in [H⁺] made by neglecting the ionisation of water in 1.0×10⁻⁶ M NaOH is:
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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