The cyclic molecule cyclohexane can be formed from three molecules of ethene, as shown in the equation. Ethene contains a double bond between carbon atoms, while cyclohexane contains only single bonds.
The bond energies of single and double carbon-carbon bonds are shown in the bar chart.
Why is there a change in temperature during this chemical reaction?
The most stable elemental form of nitrogen is the molecule , which contains a triple covalent bond, as shown:
Nitrogen atoms may also form single and double bonds with each other, but molecules containing these bonds are highly unstable. Which bar chart illustrates the difference in bond energy between the single, double, and triple bonds of nitrogen?
Poly(ethene) contains a large number of carbon-carbon single bonds. The figure shows the production of the polymer from the alkene ethene, which contains only carbon-carbon double bonds. Conversion of ethene to poly(ethene) is highly exothermic.
A poly(ethene) molecule with repeat units is formed from molecules of ethene. For each carbon-carbon double bond involved in this reaction, how many single bonds are present in the product?
Why is the conversion of ethene to poly(ethene) highly exothermic?
Why does ethene remain unreacted at room temperature and pressure?