19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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 :
Ka for HF is 3.5 × 10–4. Calculate Kb for the fluoride ion.
Aq. solution of sodium cyanide is
The solution of strong acid and weak base (FeCl3) is
Which one of the following salts gives an acidic solution in water
An aqueous solution of aluminium sulphate would show
An aqueous solution of sodium carbonate is alkaline because sodium carbonate is a salt of
The aqueous solution of ammonium chloride is
The pH of 0.1 M solution of the following salts increases in the order :
Aqueous solution of sodium acetate is
A white salt is readily soluble in water and gives a colourless solution with a pH of about 9. The salt would be
The dissociation constant of CH3COOH is 1.8 × 10–5. The hydrolysis constant for 0.1 M sodium acetate is
The aqueous solution of FeCl3 is acidic due to
Which is the correct alternate for hydrolysis constant of NH4CN (a) w a K K (b) w a b K K K x (c) b K c (d) a b K K
The pH of the solution containing 50 mL each of 0.10 M sodium acetate and 0.01 M acetic acid is [Given pKa of CH3COOH = 4.57] (NEET 2022)
The pKb of dimethylamine and pKa of acetic acid are 3.27 and 4.77 respectively at T(K). The correct option for the pH of dimethyl ammonium acetate solution is: (NEET 2021)
Find out the solubility of Ni(OH)2 in 0.1 M NaOH. Given that the ionic product of Ni(OH)2 is 2 10 x . (NEET 2020) (a) 2 10 M x (b) 2 10 M x (c) 1 10 M x (d) 1 10 M x
The pH of 0.01 M NaOH(aq) solution will be (Odisha NEET 2019)
Which will make basic buffer? (NEET 2019)
The molar solubility of CaF2 5.3 10 sp K x in 0.1 M solution of NaF will be (Odisha NEET 2019) (a) 5.3 10 x (b) 0.5 10 x (c) 5.3 10 x (d) 0.125 10 x
pH of a saturated solution of Ca(OH)2 is 9. ‘The solubility product sp K of Ca (OH)2 is (NEET 2019) (a) 0.5 10 x (b) 0.5 10 x (c) 0.25 10 x (d) 0.125 10 x
Which of the following cannot act both as Bronsted acid and as Bronsted base? (Odisha NEET 2019) (a) HCO
Conjugate base for Bronsted acids H2O and HF are (NEET 2019)
The solubility of BaSO4 in water is 2.42 x 10-3 g L-1 at 298 K. The value of its solubility product sp K will be (Given molar mass of BaSO4 = 233 g mol-1) (NEET 2018) (a) 1.08 10 mol L x (b) 1.08 10 mol L x (c) …
Following solutions were prepared by mixing different volumes of NaOH and HCl of different concentrations. (NEET 2018) (A) M M 60mL HCl+40mL NaOH (B) M M 55mL HCl + 45mL NaOH (C) M M 75mL HCl + 25mL NaOH (D) M M 100mL…