Equilibrium questions
1777 published questions with worked solutions.
- At 90°C, pure water has H_3O^+ ion concentration of 10^ -6 mol/L^ -1 . The K_w at 90°C is
- The concentration of KI and KCl in a certain solution containing both is 0.001 M each. If 20 mL of this solution is added to 20...
- The solubility product of Hg_2I_2 is equal to [RPET 2010]
- In the following reaction, AgCl+KI KCl+AgI, as KI is added, the equilibrium is shifted towards right giving more AgI precipitate...
- What volume of M/10 NaOH added in 50 mL, M/10 acetic acid solution to get a buffer solution having highest buffer capacity?
- The pH of an aqueous solution of CH_3COONa of concentration C (M) is given by [WB-JEE 2011]
- Which is the best choice for weak base-strong acid titration? [OJEE 2008]
- The aqueous solutions of HCOONa, C_6H_5NH_3Cl and KCN are respectively [Guj CET 2008]
- The compound whose 0.1 M solution is basic is [DCE 2005]
- The pK_b value of NH_3 is 5. Calculate the pH of the buffer solution, 1 L of which contains 0.01 M NH_4Cl and 0.10 M NH_4OH
- A buffer solution is prepared by mixing 0.1 M ammonia and 1.0 M ammonium chloride. At 298 K, the pK_b of NH_4OH is 5.0. The pH of...
- Which of the following salt does not get hydrolysed in water? [WB-JEE 2006]
- The degree of hydrolysis in hydrolytic equilibrium A^-+H_2O HA+OH^- at salt concentration of 0.001 M is (K_a=1 10^ -5 ) [UP SEE...
- For the titration of a solution of oxalic acid and sodium hydroxide, the suitable indicator is [Indraprastha CET 2009, CG PET...
- pH of 0.005 M calcium acetate is (pK_a of CH_3COOH=4.74)
- The pK_a of a weak acid (HA) is 4.5. The pOH of an aqueous buffered solution of HA in which 50% of the acid is ionised is
- If at 25°C the ionization constant of acetic acid is 2 10^ -5 , the hydrolysis constant of sodium acetate will be [AMU 2004]
- The hydrolysis of sodium carbonate involves the reaction between [MHT-CET 2007]
- 2.5 mL of 25 M weak monoacidic base (K_b=1 10^ -12 at 25°C) is titrated with 2 15 M HCl in water at 25°C. The concentration of...
- A solution of FeCl_3 in water acts as an acidic solution due to [BCECE 2006]
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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