KCET · Chemistry · Ionic Equilibrium
Identify a species which is not a Bronsted acid but a Lewis acid
- A \(\mathrm{BF}_{3}\)
- B \(\mathrm{H}_{3}^{+} \mathrm{O}\)
- C \(\mathrm{NH}_{3}\)
- D \(\mathrm{HCl}\)
Answer & Solution
Correct Answer
(A) \(\mathrm{BF}_{3}\)
Step-by-step Solution
Detailed explanation
Bronsted defined an acid as a substance, which has a tendency to give a proton \(\left(\mathrm{H}^{+}\right)\), on the other hand, Lewis proposed an acid as a substance, which is capable of accepting a pair of electrons. \(\mathrm{As} \mathrm{}_{3} \mathrm{H}^{+}\), \(\mathrm{NH}_{3}\) and \(\mathrm{HCl}\) has \(\mathrm{H}^{+}\)ions, these are Bronsted acids whereas \(\mathrm{BF}_{3}\) is an electron deficiet molecule, thus be have like a Lewis acid, i.e., electron pair acceptor.
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
- \(\mathrm{Mg}^{2+}\) is isoelectronic withKCET 2007 Easy
- Temperature coefficient of a reaction is 2 . When temperature is increased from \(30^{\circ} \mathrm{C}\) to \(90^{\circ} \mathrm{C}\), the rate of reaction is increased byKCET 2013 Hard
- How many Coulombs of electricity are required for the oxidation of one mol of water to
dioxygen?KCET 2015 Medium - Which of the following statement is correct?KCET 2019 Easy
- A metal crystallises in bcc lattice with unit cell edge length of \(300 \mathrm{pm}\) and density \(6.15 \mathrm{gcm}^{-3}\). The molar mass of the metal isKCET 2021 Medium
- The reagent which can do the conversion \(\mathrm{CH}_{3} \mathrm{COOH} \longrightarrow \mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{OH}\) isKCET 2021 Easy
More PYQs from KCET
- Two tangent galvanometers \(A\) and \(B\) are identical except in their number of turns. They are connected in series. On passing a current through them, deflections of \(60^{\circ}\) and \(30^{\circ}\) are produced. The ratio of the number of turns in \(A\) and \(B\) isKCET 2008 Medium
- \( 25 \mathrm{~cm}^{3} \) of oxalic acid completely neutralized \( 0.064 \mathrm{~g} \) of sodium hydroxide. Molarity of the
oxalic acid solution isKCET 2014 Medium - Three resistances \( 2 \Omega, 3 \Omega \) and \( 4 \Omega \) are connected in parallel. The ratio of currents passing through them when a potential difference is applied across its ends will beKCET 2015 Easy
- Let the functions " f " and " g " be \(\mathrm{f}:\left[0, \frac{\pi}{2}\right] \rightarrow \mathrm{R}\) given by \(\mathrm{f}(\mathrm{x})=\sin \mathrm{x}\) and \(\mathrm{g}:\left[0, \frac{\pi}{2}\right] \rightarrow \mathrm{R}\) given by \(g(x)=\cos x\), where \(R\) is the set of real numbers
Consider the following statements:
Statement (I): f and g are one-one
Statement (II): \(\mathrm{f}+\mathrm{g}\) is one-one
Which of the following is correct?KCET 2025 Medium - A linear object of height \( 10 \mathrm{~cm} \) is kept in front of a concave mirror of radius of curvature \( 15 \mathrm{~cm} \),
at a distance of \( 10 \mathrm{~cm} \). The image formed isKCET 2017 Medium - A metal exists as an oxide with formula \(M_{0.96} \mathrm{O}\). Metal, \(M\) can exist as \(M^{2+}\) and \(M^{3+}\) in its oxide \(M_{0.96} \mathrm{O}\). The percentage of \(M^{3+}\) in the oxide is nearlyKCET 2020 Medium