Final answer:
A C6H10 compound can react with H2 in the presence of a nickel catalyst to form various isomers. Two examples are the conversion of 1-hexene to hexane and cyclohexene to cyclohexane, showcasing structure isomerism.
Step-by-step explanation:
When a compound with the formula C6H10 reacts with 1 mole of H2 using a nickel catalyst at room temperature, it is likely undergoing a hydrogenation reaction. This means that the C6H10 compound has double bonds that are being reduced to single bonds by adding hydrogen. Considering the formula, the compound could have one or more double bonds, leading to various structural isomers once hydrogenated.
Two possible structures that fit the information provided could be:
1-hexene (CH3(CH2)3CH=CH2) reacting with H2 to form hexane (CH3(CH2)4CH3).
Cyclohexene (C6H10) reacting with H2 to form cyclohexane (C6H12).
These are just two examples out of several potential isomers, all of which have different structural arrangements but the same molecular formula (C6H10). This phenomenon of compounds having the same molecular formula with different structures is known as isomerism.