This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
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Hey Noh, good to see you again. (i) Step 1: Ethene reacts with bromine (B_2) in an addition reaction. The double bond in ethene breaks, and a bromine atom adds to each carbon atom. H_2C=CH_2 + Br_2 CH_2Br-CH_2Br The completed equation is: H_2C=CH_2 + Br_2 CH_2Br-CH_2Br (ii) Step 1: The given poly(alkene) has a repeating unit where two carbon atoms are linked by a single bond, and each carbon is bonded to one hydrogen and one methyl group (CH_3). Step 2: To deduce the monomer, we reverse the polymerization process. The single bond between the two carbons in the repeating unit becomes a double bond, and the bonds connecting to other repeating units are removed. The repeating unit is -[C(CH_3)H-C(CH_3)H]-. The monomer is formed by placing a double bond between these two carbons: CH_3-CH=CH-CH_3 (iii) Step 1: Butanol (an alcohol) can be made from butene (an alkene) through a hydration reaction, which is the addition of water across the double bond. This reaction typically requires a catalyst such as concentrated sulfuric acid or phosphoric acid and heat. Step 2: For but-1-ene (CH_3-CH_2-CH=CH_2), the addition of water (H_2O) will primarily form butan-2-ol. CH_3-CH_2-CH=CH_2 + H_2O H_2SO_4/heat CH_3-CH_2-CH(OH)-CH_3 (iv) Step 1: An alkene can be converted into an alkane through a hydrogenation reaction. This involves the addition of hydrogen gas (H_2) across the carbon-carbon double bond. Step 2: This reaction requires a catalyst, typically nickel (Ni), platinum (Pt), or palladium (Pd), and heat. The double bond breaks, and a hydrogen atom adds to each carbon atom, forming a single bond. Using ethene as an example: CH_2=CH_2 + H_2 Ni/heat CH_3-CH_3 Send me the next one 📸