Explain Lewis acids and bases with suitable examples.

Acid Strength: Acid strength is an acid's ability or tendency to lose a proton. Different acids should have different strengths. There are very few strong acids which are completely ionized in...

Strong bases: NaOH, KOH  Weak bases : NaHCO3, Ca(OH)2, Mg(OH)2. 

(a) Hydroxyl ion is a Lewis base as it can donate an electron lone pair (OH–).  (b) Fluoride ion acts as a Lewis base as it can donate any one of...

Lewis acids are those acids which can accept a pair of electrons. For example, BF3, H+, and  NH4+ are Lewis acids. 

The table below lists the conjugate bases for the given Bronsted acids.  Bronsted acid Conjugate base HF                   F- H2SO4            HSO4 HCO3- ...

(a) OH– is a Lewis base since it can donate its lone pair of electrons.  (b) F – is a Lewis base since it can donate a pair of electrons.  (c) H+...

(iv) only d, is correct

The correct answer is (2) If deletion happen at 901st position than the remaining 98 bases specifying for 33 codons of amino acids will be altered.

Ans. (3)  BCl3 & AlCl3 both have vacant p-orbital & incomplete octet. So they act as Lewis acid.