Advertisements
Advertisements
Question
The reaction: \[\ce{CH_3CH_2I + KOH_{(aq)} -> CH_3CH_2OH + KI}\] is classified as ______.
Options
electrophilic substitution
nucleophilic substitution
elimination
addition
Advertisements
Solution
The reaction: \[\ce{CH_3CH_2I + KOH_{(aq)} -> CH_3CH_2OH + KI}\] is classified as nucleophilic substitution.
Explanation:
\[\ce{CH_3CH_2I + KOH_{(aq)} -> CH_3CH_2OH + KI}\]
It is an example of nucleophilic substitution reaction. The hydroxyl group of KOH (OH–) with a lone pair of itself acts as a nucleophile and substitutes iodide ion in CH3CH2I to form ethanol
RELATED QUESTIONS
What are electrophiles and nucleophiles? Explain with examples.
Identify the reagents shown in bold in the following equation as nucleophiles or electrophiles:
\[\ce{C6H6 + \underline{\text{CH}_3\overset{+}{\ce{C}}{\ce{O}}} -> C6H5COCH3}\]
Identify the reagents shown in bold in the following equation as nucleophiles or electrophiles:
\[\ce{CH3COOH + \underline{\ce{H}\overset{-}{\ce{O}}} -> CH3COO^- + H2O }\]
Identify the reagents shown in bold in the following equation as nucleophiles or electrophiles:
\[\ce{CH3COCH3 + \underline{\overset{-}{\ce{C}}\ce{N}} -> (CH3)2C(CN)(OH)}\]
Electrophiles are electron seeking species. Which of the following groups contain only electrophiles?
(i) \[\ce{BF3, NH3, H2O}\]
(ii) \[\ce{AlCl3, SO3, NO^{+}2}\]
(iii) \[\ce{NO^{+}2, CH^{+}3, CH3 - \overset{+}{C} = O}\]
(iv) \[\ce{C2H^{-}5, \overset{\bullet}{C2}H5, C2H^{+}5}\]
Nucleophile is a species that should have:
(i) A pair of electrons to donate
(ii) Positive charge
(iii) Negative charge
(iv) Electron-deficient species
Why does SO3 act as an electrophile?
Match the terms mentioned in Column I with the terms in Column II.
| Column I | Column II |
| (i) Carbocation | (a) Cyclohexane and 1-hexene |
| (ii) Nucleophile of | (b) Conjugation of electrons of C – H σ bond with empty p-orbital present at adjacent positively charged carbon. |
| (iii) Hyperconjugation | (c) sp2 hybridised carbon with empty p-orbital |
| (iv) Isomers | (d) Ethyne |
| (v) sp hybridisation | (e) Species that can receive a pair of electrons |
| (vi) Electrophile | (f) Species that can supply a pair of electrons |
