Question

An unsaturated hydrocarbon with three atoms of carbon and six atoms of hydrogen is:

• A. propyne
• B. propane
• C. propene
• D. propanol

Hint:

Remember the suffixes: -ane (single bond), -ene (double bond), and -yne (triple bond). Propene belongs to the alkene family.

Answer 1

The Correct Option is C

To solve this question, we need to identify the structure of the given unsaturated hydrocarbon with three carbon atoms and six hydrogen atoms.

1. Understanding the Term "Unsaturated Hydrocarbon":
   • Unsaturated hydrocarbons are compounds that have at least one double or triple bond between carbon atoms.
   • They are generally categorized into alkenes (with one or more double bonds) and alkynes (with one or more triple bonds).
2. Analyzing the Given Formula:
   • The formula given is \(C_3H_6\) which matches the general formula of alkenes \(C_nH_{2n}\).
3. Evaluate Each Option:
   • Propyne: This is an alkyne (with a triple bond) with the formula \(C_3H_4\). It does not match the given formula.
   • Propane: This is a saturated hydrocarbon (alkane) with the formula \(C_3H_8\). It does not match the given formula.
   • Propene: This is an alkene with a double bond and has the formula \(C_3H_6\). This matches the given formula correctly.
   • Propanol: This is an alcohol, not a hydrocarbon, with an additional –OH group.
4. Conclusion:
   • Based on the provided details and analyzing each option, Propene is the correct answer as it is an unsaturated hydrocarbon matching the formula \(C_3H_6\).