19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The correct representation for solubility product of SnS2 is
Which is the correct representation of the solubility product constant of Ag2CrO4
The solubility of CaF2 is ‘s’ moles/litre. Then its solubility product is........
The solubility in water of a sparingly soluble salt AB2 is 1.0 × 10 –5moll –1. Its solubility product number will be
Let the solubility of an aqueous solution of Mg(OH)2 be x then its Ksp is
The solubility product of a salt having general formula MX2, in water is : 4 × 10 –12. The concentration of M 2+ ions in the aqueous solution of the salt is
0.1 M solution of which one of these substances will react basic ?
HCN is a weak acid (Ka = 6.2 × 10–10). NH4OH is a weak base (Kb = 1.8 × 10–5). A 1M solution of NH4CN would be :
A physician wishes to prepare a buffer solution at pH = 3.58 that efficiently resists a change in pH yet contains only small conc. of the buffering agents. Which one of the following weak acid together with its sodium…
The pH of blood does not appreciably change by a small addition of acid or a base because blood
How many moles of HCOONa must be added to 1L of 0.1 M HCOOH to prepare a buffer solution with a pH of 3.4 ? (Given : Ka for HCOOH = 2 × 10 –4); (10-0.3 = 0.5)
The dissociation constant of HCN is 5 × 10 –10. The pH of the solution prepared by mixing 1.5 mole of HCN and 0.15 moles of KCN in water and making up the total volume to 0.5 dm 3 is
In a mixture of a weak acid and its salt, the ratio of concentration of acid to salt is increased ten-fold. The pH of the solution
The pKa value of NH3 is 5. Calculate the pH of the buffer solution, 1 L of which contains 0.01 M NH4Cl and 0.10 M NH4OH
Consider the following solutions of equal concentrations. A = NH4Cl B = CH3COONa C = NH4OH D = CH3COOH A buffer solution can be obtained by mixing equal volumes of
Which of the following pairs constitutes a buffer?
Solution of 0.1 N NH4OH and 0.1 N NH4Cl has pH 9.25. The pKb of NH4OH is
x x
What will be the pH of the solution obtained by mixing 10 cc of N/10 HCl and 10 cc of N/10 NaOH ?
The pH value of 0.1 M hydrochloric acid is approximately 1. The approximate pH value of 0.05 M sulphuric acid is most likely to be
2 1 [OH [O / 2 10 OH x x x x
A solution of an acid has pH = 4.70. Find out the concentration of OH– ions (pKw = 14)
A solution contains 10ml of 0.1 N NaOH and 10 ml of 0.05 Na2SO4. pH of this solution is
The pH of a solution is increased from 3 to 6; its H + ion concentration will be :
The dissociation constants of monobasic acids A, B, C and D are 6 × 10 –4, 5 × 10 –5, 3.6 × 10 –6 and 7 × 10 –10 respectively. The pH values of their 0.1 molar aqueous solutions are in the order :