19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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 solution of hydrochloric acid has pH = 4, the molar strength of this solution is
Conjugate base of NH₃ is (a) NH (b) NH (c) NH
Of the given anions, the strongest Bronsted base is
According to Lewis concept, acid is
Calculate the OH– ion concentration of NaOH of which pH is 12.
The values of dissociation constants of some acids (at 25°C) are as follows. Indicate which is the strongest acid in water
What is the pH value of N/1000 KOH solution
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 of a 0.1 M aqueous solution of a weak acid (HA) is 3. What is its degree of dissociation ?
At a certain temperature the value of pKw is 13.4 and the measured pH of solution is 7. The solution is
The pH of 0.5 M aqueous solution of HF (Ka = 2 × 10–4) is
K C K /C x xx a H
The acidic buffer solution can be prepared by mixing solutions of
A certain buffer solution contains equal concentration of X– and HX. the Ka for HX is 10–8. The pH of the buffer is
Aqueous solution of sodium acetate is
0.1 M solution of which one of these substances will react basic ?
The solubility of AgI in NaI solution is less than that in pure water, because
Solubility product of a salt AB is 1 × 10–8 M2 in a solution in which the concentration of A+ ions are 10–3M. The salt will precipitate when the concentration of B– ions is kept (AFMC 2008)
Which of the following molecules acts as Lewis’s acid? (AIPMT 2009)
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)
The solubility product of a sparingly soluble salt AB at room temperature is 1.21 × 10–6 M2. Its molar solubility is
If the maximum concentration of PbCl₂ in water is 0.01 M at 25ºC, its maximum concentration in 0.1 M NaCl will be
What is the value of Ksp for PbCl₂ ?
The solubility of PbCl₂ is (a) sp K