Answer: CO2 and H2O.
- A CO2 and H2O
- B O2 and H2
- C CO and H2
- D C and H2
Correct answer: A. CO2 and H2O
Explanation: Complete combustion of hydrocarbons produces carbon dioxide and water.
Going from a single to a triple bond between carbons increases the s-character of hybridisation (sp³→sp²→sp), shortening the bond and locking the geometry, while increasing π-bond reactivity (alkenes and alkynes readily undergo addition reactions that alkanes don't).
Concept context
The simplest organic compounds made only of carbon and hydrogen. Covers alkanes, alkenes, alkynes, and aromatic compounds like benzene. Learn preparation methods, key reactions, and physical properties.