19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
A buffer solution is prepared in which the concentration of NH₃ is 0.30 M and the concentration of NH is 0.20 M. If the equilibrium constant, Kb for NH₃ equal 1.8 x 105, what is the pH of this solution? (log 2.7 = 0.4…
pH of a saturated solution of Ba(OH)₂ is 12. The value of solubility product (Ksp) of Ba(OH)₂ is (AIPMT 2012, 2010)
Equimolar solutions of the following substances were prepared separately. Which one of these will record the highest pH value? (AIPMT 2012)
Buffer solutions have constant acidity and alkalinity because (AIPMT 2012)
Which of these is least likely to act as a Lewis’s acid? (NEET 2013)
The dissociation constant of a weak acid is 1 x 104. In order to prepare a buffer solution with a pH = 5, the [Salt]/[Acid] ratio should be (NEET 2013)
The values of Ksp of CaCO₃ and CaC₂O₄ are 4.7 x 10-9 and 1.3 x 10-9 respectively at 25C. If the mixture of these two is washed with water, what is the concentration of Ca²⁺ ions in water? (NEET 2013)
Identify the correct order of solubility in aqueous medium. (NEET 2013)
Accumulation of lactic acid (HC₃H₅O₃), a monobasic acid in tissues leads to pain and a feeling of fatigue. In a 0.10 M aqueous solution, lactic acid is 3.7% dissociated. The value of dissociation constant…
At 100C the Kw of water is 55 times its value at 25C. What will be the pH of neutral solution? (log 55 = 1.74) (NEET 2013)
What is the pH of the resulting solution when equal volumes of 0.1 M NaOH and 0.01 M HCl are mixed ? (AIPMT 2015)
The percentage of pyridine (C H N) that forms pyridinium ion (C H N H) in a 0.10 M aqueous pyridine solution ( b K for C H N 1.7 10 ) x is (NEET 2016)
Which of the following fluoro-compounds is most likely to behave as a Lewis’s base? (NEET-II 2016)
The solubility of AgCl with solubility product 1.6x10-10 in 0.1 M NaCl solution would be (NEET- II 2016)
MY and NY₃. Two nearly insoluble salts, have the same sp K value of 6.2 x 10-15 at room temperature. Which statement would be true in regard to MY and NY₃? (NEET-I 2016)
Concentration of the Ag ions in a saturated solution of Ag C O is 2.2 10 mol L . x Solubility product of Ag C O is (NEET 2017) (a) 2.66 10 x (b) 4.5 10 x (c) 5.3 10 x (d) 2.42 10 x
Following solutions were prepared by mixing different volumes of NaOH and HCl of different concentrations. (NEET 2018) (A) M M 60mL HCl+40mL NaOH (B) M M 55mL HCl + 45mL NaOH (C) M M 75mL HCl + 25mL NaOH (D) M M 100mL…
The solubility of BaSO₄ in water is 2.42 x 10-3 g L-1 at 298 K. The value of its solubility product sp K will be (Given molar mass of BaSO₄ = 233 g mol-1) (NEET 2018) (a) 1.08 10 mol L x (b) 1.08 10 mol L x (c) 1.08 …
Conjugate base for Bronsted acids H₂O and HF are (NEET 2019)
Which of the following cannot act both as Bronsted acid and as Bronsted base? (Odisha NEET 2019) (a) HCO
pH of a saturated solution of Ca(OH)₂ is 9. ‘The solubility product sp K of Ca (OH)₂ is (NEET 2019) (a) 0.5 10 x (b) 0.5 10 x (c) 0.25 10 x (d) 0.125 10 x
The molar solubility of CaF₂ 5.3 10 sp K x in 0.1 M solution of NaF will be (Odisha NEET 2019) (a) 5.3 10 x (b) 0.5 10 x (c) 5.3 10 x (d) 0.125 10 x
Which will make basic buffer? (NEET 2019)
The pH of 0.01 M NaOH(aq) solution will be (Odisha NEET 2019)
Find out the solubility of Ni(OH)₂ in 0.1 M NaOH. Given that the ionic product of Ni(OH)₂ is 2 10 x . (NEET 2020) (a) 2 10 M x (b) 2 10 M x (c) 1 10 M x (d) 1 10 M x