What is the empirical formula for hydrocarbon hexane?

Apr 24, 2014

Hexane has a chemical formula of ${C}_{6} {H}_{14}$. This would make the the empirical formula for hexane ${C}_{3} {H}_{7}$

For the Hydrocarbons that end in the suffix -ane like butane, propane and hexane, the base formula is ${C}_{n} {H}_{2 n + 2}$.

Propane is for the prefix pro- n = 3
${C}_{3} {H}_{\left(2\right) 3 + 2}$ so the formula is ${C}_{3} {H}_{8}$
Empirical Formula would be ${C}_{3} {H}_{8}$

Butane is for the prefix but- n = 4
${C}_{4} {H}_{\left(2\right) 4 + 2}$ so the formula is ${C}_{4} {H}_{10}$
Empirical Formula would be ${C}_{2} {H}_{5}$

Octane is for the prefix Oct- n = 8
${C}_{8} {H}_{\left(2\right) 8 + 2}$ so the formula is ${C}_{8} {H}_{18}$
Empirical Formula would be ${C}_{4} {H}_{9}$

I hope this was helpful.
SMARTERTEACHER