Per NCERT §6.10.3, in the LEWIS concept (G.N. Lewis, 1923), a base is defined as which kind of species?
AAn electron-pair acceptor
BAn electron-pair donor
CA proton acceptor
DA proton donor
Answer & Solution
Correct answer: B. An electron-pair donor
NCERT §6.10.3: Lewis — acid accepts electron pair; base donates electron pair. BF₃ + NH₃ → BF₃·NH₃ is the canonical example.
Related questions
Per NCERT §6.11.2, the pH of a 10⁻⁴ M NaOH solution (strong base, fully dissociated) is clPer NCERT §6.11.2, the pH of a 10⁻² M HCl solution (strong acid, fully dissociated) is cloPer NCERT eqn 6.29, at 298 K, what is the value of pH + pOH for any aqueous solution?Per NCERT §6.11.2, the pH of a solution is defined as which expression?Per NCERT §6.11.1, Kw varies with which physical variable, since it is itself an equilibriPer NCERT §6.11.1 eqn 6.28, the ionic product of water Kw = [H⁺][OH⁻] at 298 K has which vPer NCERT §6.10.2, the conjugate base of a STRONG acid is necessarily which kind of base?Per NCERT §6.10.2 + Problem 6.13, what is the conjugate acid of the Brønsted base NH₃?