Final answer:
The product of catalytic hydrogenation of (2Z)-2,3-dichlorobut-2-ene with an excess of hydrogen and a platinum catalyst is 2,3-dichlorobutane, a fully saturated alkane.
Step-by-step explanation:
The subject of the question is the catalytic hydrogenation of (2Z)-2,3-dichlorobut-2-ene, which is a chemical reaction where a compound, in this case an alkene, is treated with an excess of hydrogen gas in the presence of a platinum catalyst to produce an alkane.
When (2Z)-2,3-dichlorobut-2-ene undergoes hydrogenation, the double bond between the carbon atoms is converted into a single bond by the addition of hydrogen atoms to each of the carbon atoms involved in the double bond. Since the process involves an excess of hydrogen and a platinum catalyst, the alkene is fully saturated, meaning it converts to butane, which will be the same product regardless of the starting geometrical isomer of the alkene. Therefore, the compound formed after catalytic hydrogenation of (2Z)-2,3-dichlorobut-2-ene is 2,3-dichlorobutane.