19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
A certain buffer solution contains equal concentration of Xand HX. The Kb for X is 10–10. The pH of the buffer is
The correct representation for solubility product of SnS2 is
Solubility product of BaCl2 is 4 × 10 –9. Its solubility in moles/litre would be
Solubility of AgCl will be minimum in
At 298 K, the solubility product of PbCl2 is 1 10 x . What will be the solubility of PbCl2 in moles/litre
When HCl gas is passed through a saturated solution of common salt, pure NaCl is precipitated because
Calculate the pH of a buffer prepared by mixing 0.10 mol of sodium formate and 0.05 mole of formic acid in 1.0 L of solution. [HCO2H : Ka =1.8 × 10–4]
What is the pH of a buffer solution which is 0.250 M in benzoic acid, C6H5COOH, and 0.150 M in sodium benzoate, C6H5COONa, if a K for benzoic acid is 6.5 × 10–5 ?
The principal buffer present in human blood is
For preparing a buffer solution of pH 6 by mixing sodium acetate and acetic acid, the ratio of the concentration of salt and acid should be (Ka = 10 –5)
The pKb of CNis 4.7. The pH of solution prepared by mixing 2.5 mol of KCN of 2.5 mol of HCN in water and making the total volume up to 500 mL is
10–6 M NaOH is diluted by 100 times. The pH of diluted base is
K C K /C x xx a H
The pH of 0.5 M aqueous solution of HF (Ka = 2 × 10–4) is
In decimolar solution, CH3COOH is ionised to the extent of 1.3%. If log 1.3 = 0.11, what is the pH of the solution ?
At a certain temperature the value of pKw is 13.4 and the measured pH of solution is 7. The solution is
What is the pH of a 0.015 M Ba(OH)2 solution ?
An acid solution of pH = 6 is diluted hundred times. The pH the solution becomes :
Which of the following is most soluble ?
The solubility of PbCl2 is (a) sp K
The pH of a 10 –9 M solution of HCl in water is
What is the pH value of N/1000 KOH solution
If the pH value is 4.5 for a solution then what is the H+ concentration? (a) 3.162 10 mol / L x (b) 31.62 10 mol / L x (c) 0.3162 10 mol / L x (d) 3.162 10 mol / L x
Which of the following has highest pH?
The number of H+ in 1 cc of solution of pH = 13 is