19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The Ksp of CuS, Ag₂S and HgS are 10–31, 10–44 and 10–54 respectively. The solubility of these sulphides are in the order
The least soluble compound (salt) of the following is
The solubility product of Ag₂CrO₄ is 32 × 10–12. What is the concentration of ions in that solution (in g ions L–1)
Ksp for HgSO₄ is 6.4 × 10–5, then solubility of the salt is
What is the solubility of calcium fluoride in a saturated solution if its solubility product is 3.2 × 10–11
At 18ºC, the solubility product of AgCl is 1.8 × 10–10. In the solution, the value of [Ag⁺] is 4 × 10–3mol/litre. The value of [Cl–] to precipitate AgCl from this solution should be greater than
Neutralization of an acid with a base, invariably results in the production of
If 0.1 M of a weak acid is taken and its percentage of degree of ionization is 1.34%, then its ionization constant will be (AFMC 2005)
At 25 °C the dissociation constant of a base, BOH, is 1.0×10–12. The concentration of hydroxyl ions in 0.01 M aqueous solution of the base would be (AIPMT 2005)
The hydrogen ion concentration of a 10M HCl aqueous solution at 298 K w K 10 is (AIPMT 2006)
Degree of dissociation of 0.1 N is acid (K 1 10 ) x (CPMT 2006) (a) (b) (c) (d)
A weak acid, HA, has a K of 1.00 × 10–5. If 0.100 mole of this acid is dissolved in 1L of water, the percentage of acid dissociated at equilibrium is closest to (CBSE AIPMT 2007)
Calculate the pOH of a solution at 25C that contains 1 x 1010 M of hydronium ions, i.e., H₃O⁺. (AIPMT 2007)
The pH of 10–8 M HCl solution is (AFMC 2008)
Which of the following is correct? (CPMT 2008)
Equal volumes of three acid solutions of pH 3, 4 and 5 are mixed in a vessel. What will be the H⁺ ion concentration in the mixture ? (CBSE AIPMT 2008) (a) –4 1.11 10 M x (b) 3.7 10 M x (c) 3.7 10 M x (d) 1.…
If the solubility of calcium fluoride in pure water is x mol/L, its solubility product is (AFMC 2009) (a) 2x
Among the following the strongest conjugate base is (DUMET 2009) (a) NO
The ionization constant of ammonium hydroxide is 1.77 x 105 at 298 K. Hydrolysis constant of ammonium chloride is (AIPMT 2009)
What is the [OH⁻] in the final solution prepared by mixing 20.0 mL of 0.050 M HCl with 30.0 mL of 0.10 M Ba(OH)₂? (AIPMT 2009)
Which of the following molecules do not act as a Lewis’s base? (AIPMT 2009)
Which one of the following molecular hydrides acts as a Lewis’s acid? (AIPMT 2010)
What is [H⁺] in mol/L of a solution that is 0.20 M in CH₃COONa and 0.10 M in CH₃COOH? (Ka for CH₃COOH = 1.8 x 10-5) (AIPMT 2010)
In a buffer solution containing equal concentration of B– and HB, the Kb for B– is 1010. The pH of buffer solution is (AIPMT 2010)
Which of the following is least likely to behave as Lewis’s base? (AIPMT 2011)