Given below are two statements: Statement I: Methane can be prepared by decarboxylation of sodium ethanoate, Kolbe's electrolysis of sodium acetate and reaction of CH _3 MgBr with water. Statement II: Methane cannot be prepared from unsaturated hydrocarbons and by Wurtz reaction. In the light of the above statements, choose the correct answer from the options given below
D. Statement I is false but Statement II is true
Statement I is false because Kolbe's electrolysis of sodium acetate produces ethane, not methane. The reaction is: 2 CH _3 COONa + 2 H _2 O Electrolysis CH _3- CH _3 + 2 CO _2 + H _2 + 2 NaOH . Decarboxylation of sodium ethanoate and the reaction of CH _3 MgBr with water do produce methane. Statement II is true because the simplest unsaturated hydrocarbon is ethene ( C _2 H _4), which upon hydrogenation yields ethane, meaning methane cannot be prepared from unsaturated hydrocarbons. Additionally, the Wurtz reaction involves the coupling of two alkyl halide molecules to form an alkane with at least two carbon atoms (2 RX + 2 Na R - R + 2 NaX ), so methane cannot be prepared by this method. Therefore, Statement I is false but Statement II is true. Answer: Statement I is false but Statement II is true
Related: Chemistry — Hydrocarbons · All PYQ Banks