Complete and balance the following complete hydrogenation reaction: CH₃CH₂C ≡ CCH₃ + 2H₂ → ?

Question

Quizplus · Accepted Answer

Complete hydrogenation of a triple bond (C≡C) requires the addition of two hydrogen molecules (H2). Each H2 molecule provides two hydrogen atoms, which can add to the two carbons of the triple bond to form single bonds (C-C). In this case, there are two triple bonds, so four hydrogen atoms are needed. The balanced equation would be:
CHS1U1B13S1U1B0CHS1U1B12S1U1B0C ≡ CCHS1U1B13S1U1B0 + 4HS1U1B12S1U1B0 → CHS1U1B13S1U1B0CHS1U1B12S1U1B0CHS1U1B12S1U1B0CHS1U1B12S1U1B0CHS1U1B13S1U1B0
Option A has an incorrect product, it forms two CH3 groups which are not formed during hydrogenation.
Option C is incorrect as it contains 5 carbon atoms in the product, but there are only 3 carbon atoms in the reactant.
Option D has 18 CH bonds in the product but the reactant has only 14 CH bonds, so this option shows a double number of carbon atoms.
Option E forms a new type of bond (S1U1B1) which is not present in the reactant, indicating that there is a typing error.

Complete and Balance the Following Complete Hydrogenation Reaction: CH3CH2C ≡

Complete and Balance the Following Complete Hydrogenation Reaction: CH₃CH₂C ≡