Question

a student is trying to identify an unknown solid. they find that it is colorless and has a camphor - like odor. they then determine its melting point to be 26°c. using the table of physical properties below, what is the identity of the unknown substance? select one: 2 - butanone ethanol cyclohexane tert - butanol

Explanation:

Compare the properties of the unknown solid (colorless, camphor - like odor, melting point \(26^{\circ}C\)) with the properties in the table.

• 2 - butanone has a sweet odor and a melting point of \(-86^{\circ}C\), so it is not the unknown.
• Ethanol has an alcoholic odor and a melting point of \(-114^{\circ}C\), so it is not the unknown.
• Cyclohexane has a mild, sweet odor and a melting point of \(7^{\circ}C\), so it is not the unknown.
• tert - butanol is colorless, has a camphor - like odor, and a melting point of \(26^{\circ}C\), which matches the unknown solid.

Answer:

tert - butanol