Question

Здійсніть перетворення: СH4 → CH3I → C2H6 → C2H4 → C2H5OH

Answer 1

CH4 + I2 = CH3I + HI

CH3I + CH3I + 2Na = C2H6 + 2NaI

C2H6 (дегидрирование) = C2H4 + H2

C2H4 + H2O = C2H5OH

Answer 2

Chemical Transformation:

The given chemical transformation involves a series of reactions starting with CH4 and leading to C2H5OH. Let's break down each step of the transformation:

1. CH4 → CH3I: - The transformation of CH4 to CH3I involves the substitution of a hydrogen atom in CH4 with an iodine atom to form CH3I. - This reaction is known as the halogenation of methane, where methane reacts with iodine in the presence of UV light to form methyl iodide. - The chemical equation for this reaction is: CH4 + I2 → CH3I + HI [[1]].

2. CH3I → C2H6: - The transformation of CH3I to C2H6 involves the coupling of two CH3I molecules to form ethane (C2H6). - This reaction is known as the Wurtz reaction, where alkyl halides react with sodium metal to form higher alkanes. - The chemical equation for this reaction is: 2CH3I + 2Na → C2H6 + 2NaI [[2]].

3. C2H6 → C2H4: - The transformation of C2H6 to C2H4 involves the elimination of two hydrogen atoms from ethane to form ethylene (C2H4). - This reaction is known as dehydrogenation, and it can be achieved through various methods such as thermal cracking or catalytic cracking. - The chemical equation for this reaction is: C2H6 → C2H4 + H2 [[3]].

4. C2H4 → C2H5OH: - The transformation of C2H4 to C2H5OH involves the addition of water to ethylene to form ethanol (C2H5OH). - This reaction is known as hydration of ethylene, and it is typically carried out in the presence of a catalyst such as sulfuric acid or phosphoric acid. - The chemical equation for this reaction is: C2H4 + H2O → C2H5OH [[4]].

In summary, the given chemical transformation involves a series of reactions including halogenation, Wurtz reaction, dehydrogenation, and hydration to convert CH4 to C2H5OH.