19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Of the given anions, the strongest Bronsted base is
Review the equilibrium and choose the correct statement HClO4 + H2O H3O + + ClO4 –
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)
Ksp of Mg (OH)2 is 1 × 10–12. 0.01 M Mg (OH)2 will be precipitating at the limiting pH :
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)
H S aq H aq HS aq ;K 9.5 10 x HS aq H aq S aq ;K 1.0 10 x Given the equilibrium constants provided what is the equilibrium constant for the reaction: S (aq) 2H (aq) H S(aq) K = ?
The solubility products of MA, MB, MC and MD are 1.8 × 10–10, 4 × 10–3, 4 × 10–8 and 6 × 10–5 respectively. If a 0.01 M solution of MX is added dropwise to a mixture containing A–, B–, C– and D– ions then t…
Assertion (A): H2SO4 acts as a base in the presence of HClO4. Reason (R): Perchloric acid is stronger acid than H2SO4.
Which will make basic buffer? (NEET 2019)
A weak acid, HA has a Ka of 1.00 10 x . If 0.100 mole of this acid is dissolved in 1 L of water, the percentage of acid dissociated at equilibrium is closest to
The conjugate base of NH2 – is
Cl – is the conjugate base of
The correct order of acid strength is
Conjugate base of NH3 is (a) NH (b) NH (c) NH
The conjugate acid of HPO4 2– is
Which of the following is least likely to behave as Lewis’s base?
Arrange NH ,H O,H O ,HF and OH in increasing order of acidic nature. (a) H O NH HF OH H O (b) NH HF H O H O OH (c) HO H O NH HF H O (d) H O HF H O NH OH
Pure water is kept in a vessel and it remains exposed to atmospheric CO2 which is absorbed, then its pH will be
Which equilibrium can be described as an acid-base reaction using the Lewis’s acid-base definition, but not using Bronsted-Lowry definition ?