3.2 Alkanes PDF Revision Courses

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Questions and Answers

What is the general formula for alkanes?

CnH2n+2

What is the simplest alkane?

Methane

How many hydrogen atoms are present in a butane molecule?

What type of hybridization is present in carbon atoms in alkanes?

sp3 Signup and view all the answers

What is the shape of a methane molecule?

Tetrahedral Signup and view all the answers

Explain why alkanes are considered to be saturated hydrocarbons.

Alkanes are considered saturated because they contain only single bonds between carbon atoms, leading to the maximum number of hydrogen atoms bound to each carbon atom. Signup and view all the answers

Describe the trend in boiling points of alkanes as the number of carbon atoms in the molecule increases.

The boiling points of alkanes generally increase as the number of carbon atoms in the molecule increases. Signup and view all the answers

Discuss the significance of the prefix 'n-' when naming alkanes.

The prefix 'n-' indicates that the carbon chain in the alkane is linear or straight-chain. Signup and view all the answers

Explain how the naming system for alkanes changes when there are branches in the carbon chain.

When there are branches in the carbon chain, the longest continuous chain is identified as the parent chain, and branches are named as substituents. Signup and view all the answers

Discuss the differences in reactivity between alkanes and alkenes.

Alkanes are relatively unreactive due to the presence of only single bonds, while alkenes are more reactive because they contain at least one double bond. Signup and view all the answers