Increasing order of basicity:
General Organic Chemistry (GOC) · Class 11 · JEE Main Previous Year Question
Increasing order of basicity:
- a✓
(v) < (iii) < (ii) < (iv) < (i)
- b
(iii) < (i) < (ii) < (iv) < (v)
- c
(v) < (i) < (iv) < (ii) < (iii)
- d
(iii) < (iv) < (ii) < (i) < (v)
(v) < (iii) < (ii) < (iv) < (i)
Step 1: Basic Strength of Anions Basicity is the tendency to donate a lone pair. It is inversely proportional to the stability of the anion.
- (v) Cyanide: Stabilized by high EN of Nitrogen and triple bond. (Weakest base).
- (iii) Ethynyl: carbon. (Very stable).
- (ii) Vinyl: carbon.
- (iv) Methyl: carbon. (Strong base).
- (i) tert-butoxide: Although Oxygen is EN, the effects and steric bulk make it a very strong base in non-polar contexts (strongest here).
Step 2: Order (v) < (iii) < (ii) < (iv) < (i).
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