Final answer:
A resolution of 1.5 would result in inefficient separation of methylcyclohexane and methylcyclohexene as the peaks would overlap, making it difficult to clearly distinguish the two compounds.
Step-by-step explanation:
If a resolution of 1.5 is used in separating methylcyclohexane and methylcyclohexene, the separation would be considered inefficient. Resolution is a measure of how well two compounds are separated in a mixture during chromatography or other separation techniques. A resolution of 1.5 suggests that the peaks representing the two compounds on a chromatogram are not completely separated, leading to an overlap that makes it difficult to distinguish methylcyclohexane from methylcyclohexene clearly.
For efficient separation, a resolution value greater than 1.5 is generally desired. When compounds have similar physical properties, such as boiling points or polarity, achieving a high resolution can be challenging. However, techniques like repeated extractions or using a selective solvent system can be employed to improve the separation efficiency.