Equilibrium questions
1777 published questions with worked solutions.
- A weak acid HA after treatment with 12 mL of 0.1 M strong base BOH has a pH of 5. At the end point, the volume of same base...
- pH of 0.05 M Mg(OH)₂ is:
- Solubility product of MX₂ at 298 K is 4×10⁻¹². At this temperature concentration of M²⁺ ion in mol per litre is:
- Mohr's salt is a:
- Buffer solutions have constant acidity and alkalinity because:
- The pH of the solution is 4. The hydrogen ion concentration of the solution in mol/litre is:
- If 50 mL of 0.2 M KOH is added to 40 mL of 0.5 M HCOOH, the pH of the resulting solution is (Ka=1.8×10⁻⁴):
- Precipitation just takes place when the product of concentration of ions:
- Buffering action of a mixture of CH₃COOH and CH₃COONa is maximum when the ratio of salt to acid concentration is equal to:
- The pH of the solution containing 0.1 N NaOH and 0.1 N NH₄OH is:
- For which salt the pH of its solution does not change with dilution?
- A buffer solution is prepared in which the concentration of NH₃ is 0.30 M and NH₄⁺ is 0.20 M. If the equilibrium constant, Kb for...
- Solution prepared by dissolving equal number of mole of HOCl (Ka=3.2×10⁻⁸) and NaOCl is a buffer of pH:
- Approximate pH of 0.10 M aqueous H₂S solution having K₁ and K₂ for H₂S at 25°C 10⁻⁷ and 10⁻¹³ respectively, is:
- If the solubility product of AgBrO₃ and Ag₂SO₄ are 2×10⁻⁵ and 5.5×10⁻⁵ respectively, the relationship between the solubilities of...
- The indicator used in titrating oxalic acid with caustic soda solution is:
- The conjugate acid of H⁻ ion is:
- In the hydrolytic equilibrium, A⁻+H₂O⇌HA+OH⁻, Ka=1.0×10⁻⁵. The degree of hydrolysis of 0.001 M solution of the salt is:
- Ksp of salts AB, AB₂ and A₃B are 4.0×10⁻⁸, 3.2×10⁻¹⁴ and 2.7×10⁻¹⁵ respectively at temperature T. The solubility order of these...
- In a reaction at equilibrium, 'x' moles of the reactant A decompose to give 1 mole each of B and C (i.e., xA(g) B(g) + C(g))....
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