19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
A monoprotic acid in 1.00 M solution is 0.01% ionised. The dissociation constant of this acid is
Which of the following is the weakest acid?
Which equilibrium can be described as an acid-base reaction using the Lewis’s acid-base definition, but not using Bronsted-Lowry definition ?
Pure water is kept in a vessel and it remains exposed to atmospheric CO2 which is absorbed, then its pH will be
Arrange NH ,H O,H O ,HF and OH in increasing order of acidic nature. (a) H O NH HF OH H O (b) NH HF H O H O OH (c) HO H O NH HF H O (d) H O HF H O NH OH
Which of the following is least likely to behave as Lewis’s base?
Which one of the following molecular hydrides acts as a Lewis’s acid?
Which of the following molecules acts as Lewis acid?
The strongest conjugate base is (a) NO
Which of the following is not Lewis’s acid ?
BF3 is acid according to
In the reaction I I I -> the Lewis’s base is
The conjugate base of HPO is (a) PO (b) H PO
According to Lewis concept, acid is
According to Lowry and Bronsted system, the chloride ion (Cl–) in aqueous solution is a
The conjugate base of a weak acid is
Of the given anions, the strongest Bronsted base is
Review the equilibrium and choose the correct statement HClO4 + H2O H3O + + ClO4 –
The conjugate acid of HPO4 2– is
Conjugate base of NH3 is (a) NH (b) NH (c) NH
The correct order of acid strength is
Cl – is the conjugate base of
The conjugate base of NH2 – is
A mixture of a weak acid (say acetic acid) and its salt with a strong base (say sodium acetate) is a buffer solution. Which other pair of substances from the following may have a similar property ?
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)