EasyChemistryHigh School (9–10)GeneralCarbon and Its Compounds › Hydrocarbons and NomenclatureConceptualBoard Exam

Which of these are alkanes? C₃H₈, C₄H₈, C₅H₁₂, C₆H₁₂, C₂H₂, C₉H₂₀, C₁₀H₂₀.

Try it on paper first. A hint, the key idea and the worked solution are here when you need them.

Which of these are alkanes? $\text{C}_3\text{H}_8$ , $\text{C}_4\text{H}_8$ , $\text{C}_5\text{H}_{12}$ , $\text{C}_6\text{H}_{12}$ , $\text{C}_2\text{H}_2$ , $\text{C}_9\text{H}_{20}$ , $\text{C}_{10}\text{H}_{20}$ .

Need a reminder? The key ideaShow

Alkanes are saturated, $\text{C}_n\text{H}_{2n+2}$ , names ending in -ane. Each member of a homologous series has one more $\text{CH}_2$ , $14\ \text{g/mol}$ , than the one before. Boiling points rise along the series. Isomers have the same formula and different structures.

The worked solution

Have you tried it?

Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.

← All Problems

← Pentane, C₅H₁₂, has three isomers. A class draws five carbon skeletons for it: Five carbons in a…The boiling points of methane, ethane, propane, butane, pentane and hexane are 112 K, 185 K, 231 K… →

More onCarbon and Its Compounds › Hydrocarbons and Nomenclature

Discussion (0)

Loading…

Which of these are alkanes? C₃H₈, C₄H₈, C₅H₁₂, C₆H₁₂, C₂H₂, C₉H₂₀, C₁₀H₂₀.

The worked solution

Discussion (0)

Want to go further in Carbon and Its Compounds › Hydrocarbons and Nomenclature?