19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The equilibrium constant for this reaction is approximately 10–3. HPO (aq.) HCO (aq.) H PO (aq.) CO (aq.) Which is the strongest conjugate base in this reaction? (a) HPO (aq.) (b) HCO (aq.) (c) H PO (aq.) (d…
Consider the following reaction which proceeds predominantly forward HSO NH NH SO From the information given it is clear that (a) HSOis a stronger acid than NH.
The pH of the solution containing 50 mL each of 0.10 M sodium acetate and 0.01 M acetic acid is [Given pKa of CH3COOH = 4.57] (NEET 2022)
The pKb of dimethylamine and pKa of acetic acid are 3.27 and 4.77 respectively at T(K). The correct option for the pH of dimethyl ammonium acetate solution is: (NEET 2021)
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
The pH of 0.01 M NaOH(aq) solution will be (Odisha NEET 2019)
Which will make basic buffer? (NEET 2019)
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
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
Which of the following cannot act both as Bronsted acid and as Bronsted base? (Odisha NEET 2019) (a) HCO
Conjugate base for Bronsted acids H2O and HF are (NEET 2019)
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) …
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…
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
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)
The solubility of AgCl with solubility product 1.6x10-10 in 0.1 M NaCl solution would be (NEET- II 2016)
Which of the following fluoro-compounds is most likely to behave as a Lewis’s base? (NEET-II 2016)
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)
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)
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)
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…
Identify the correct order of solubility in aqueous medium. (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)
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)
Which of these is least likely to act as a Lewis’s acid? (NEET 2013)