Which of the following is an example of an alkane? (2023)

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Question: Which of the following is an example of an alkane? (2023)

Options:

Correct Answer: C3H8

Exam Year: 2023

Solution:

Alkanes are saturated hydrocarbons with the general formula CnH2n+2. C3H8 (propane) fits this formula.

Which of the following is an example of an alkane? (2023)

Which of the following is an example of an alkane? (2023)

Step 1: Understand what an alkane is. Alkanes are a type of hydrocarbon that only have single bonds between carbon atoms.
Step 2: Know the general formula for alkanes, which is CnH2n+2. This means for every 'n' carbon atoms, there are '2n+2' hydrogen atoms.
Step 3: Identify the example given, which is C3H8. Here, 'C3' means there are 3 carbon atoms.
Step 4: Calculate the number of hydrogen atoms using the formula. For n=3, the formula gives us 2(3)+2 = 8 hydrogen atoms.
Step 5: Compare the calculated hydrogen atoms (8) with the given example (C3H8). They match, confirming that C3H8 is an alkane.

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