19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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
The solution of hydrochloric acid has pH = 4, the molar strength of this solution is
Calculate the OH– ion concentration of NaOH of which pH is 12.
Four grams of NaOH solid are dissolved in just enough water to make 1 litre of solution. What is the [H+] of the solution ?
The pOH value of a solution whose hydroxide ion concentration is 6.2 × 10–9mol/litre is
4g of NaOH are put into 10 litres of water. The pH of the resulting solution will be
The pH of solutions A, B, C, D are respectively 9.5, 2.5, 3.5, 5.5, The most acidic solution is
] ] In option B, it is a base salt. In option C, it is a weak acid salt. In option D, it is a strong acid
Which of the following solutions will have the highest pH value ?
A soda water bottle has pH
The term pH comes from
w 2H O H O OH ,K 1 10 x at 25ºC hence Ka is : (a) 1 10 x (b) 5.55 10 x (c) 18 10 x (d) 1.00 10 x
The concentration of [H+] and concentration of [OH–] of a 0.1 aqueous solution of 2% ionised weak monoprotic acid is [ionic product of water = 1×10–14]
At 90oC, pure water has H3O+ ion concentration of 10-6 mol/L. The Kw at 90oC is
The hydrogen ion concentration of a 10–8 M HCl aq. solution at 298K (Kw = 10–14) is (a) 1.0 10 M x (b) 1.10 10 M x (c) 9.525 10 M x (d) 1.0 10 M x
The concentration of water molecules in pure water at 298 K is
For a pure water,
A monoprotic acid in 1.00 M solution is 0.01% ionized. The dissociation constant of this acid is (a) 1 10 x (b) 1 10 x (c) 1 10 x (d) 1 10 x
At infinite dilution, the percentage ionisation for both strong and weak electrolytes is
Concentration CN – in 0.1 M HCN is [Ka = 4 × 10 –10]
For a weak acid HA, Ostwald’s dilution law is represented by the equation (a) a c K 2 (b) a c K (c) a K c c (d) a c K