19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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
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) …
Which of the following is correct? (CPMT 2008)
The pH of 10–8 M HCl solution is (AFMC 2008)
Calculate the pOH of a solution at 25C that contains 1 x 1010 M of hydronium ions, i.e., H3O+. (AIPMT 2007)
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)
Degree of dissociation of 0.1 N is acid (K 1 10 ) x (CPMT 2006) (a) (b) (c) (d)
The hydrogen ion concentration of a 10M HCl aqueous solution at 298 K w K 10 is (AIPMT 2006)
At 25oC 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)
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)
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