COMEDK · Chemistry · 8. Ionic Equilibrium
Select the \(\mathrm{p} K_{a}\) value of the strongest acid from the following.
- A 2
- B 4.5
- C 1
- D 3
Answer & Solution
Correct Answer
(C) 1
Step-by-step Solution
Detailed explanation
The acidic strength of an acid increase with ionisation. The value of \(\mathrm{p} K_{a}\) is inversely proportional to ionisation constant \(\left(\bar{K}_{a}\right)\). \(\therefore\) The acid with \(\mathrm{p} K_{a}\) value \(1.0\) is strongest.
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- A compound with molecular formula \(\text{C}_5\text{H}_{10}\) that gives acetone on ozonolysis is:COMEDK 2026 Medium
- If the enthalpy of formation of a diatomic molecule \(\mathrm{AB}\) is \(-400 \mathrm{~kJ} / \mathrm{mol}\) and the bond dissociation energies of \(\mathrm{A}_2\) and \(\mathrm{B}_2\) and \(\mathrm{AB}\) are in the ratio \(2: 1: 2\), what is the bond dissociation enthalpy of \(\mathrm{B}_2\) ?COMEDK 2024 Medium
- A proton having mass equal to \(1.66 \times 10^{-27} \mathrm{~kg}\) is accelerated to one tenth of the velocity of light. If its velocity can be measured to an accuracy of \(\pm 2 \%\), what would be the uncertainty in its position?COMEDK 2023 Medium
- Benzoin isCOMEDK 2016 Medium
- The first fraction obtained during the fractionation of petroleum isCOMEDK 2016 Easy
- What will be the change in the electrode potential of chromium electrode dipping into chromic sulphate solution, when the electrolyte is diluted 10 times at \(25^\circ\)C? [ \(E^0\ (\text{Cr}^{3+}/\text{Cr})] = -0.74\)VCOMEDK 2026 Medium
More PYQs from COMEDK
- Para and ortho hydrogen differ in:COMEDK 2023 Easy
- If \(A=\{1,2,5,6\}\) and \(B=\{1,2,3\}\), then \((A \times B) \cap(B \times A)\) is equal toCOMEDK 2021 Easy
- Among the complexes of Ni listed below, the following is the only correct statement about the given compounds.
I. \(\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]\)
II. \(\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-}\)
III. \(\left[\mathrm{NiCl}_{4}\right]^{2-}\)COMEDK 2015 Medium - A thermodynamic system changes its state from A to C in two different paths ABC and AC. The internal energy of the system at state C is \(20\text{ J}\) and at state A is \(10\text{ J}\). Heat supplied to the system to go from A to C along path AC is
COMEDK 2024 Medium - In the arrangement shown below, what is the magnitude of force experienced by 20 cm length of wire \(Z\)
Distance between the wires \(X\) and \(Z\) is 9 cm and between \(X\) and \(Y\) is 6 cm .COMEDK 2025 Medium - A gaseous carbon compound is soluble in dilute \(\mathrm{HCl}\). The solution on treating with \(\mathrm{NaNO}_{2}\) gives off nitrogen leaving behind a solution, which smells of wood spirit. The carbon compound isCOMEDK 2013 Hard