Which of the following has the lowest boiling point? (2023)

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Question: Which of the following has the lowest boiling point? (2023)

Options:

Correct Answer: CH4

Solution:

CH4 (methane) has the lowest boiling point due to weak London dispersion forces compared to the other molecules.

Which of the following has the lowest boiling point? (2023)

Which of the following has the lowest boiling point? (2023)

Step 1: Understand what boiling point means. The boiling point is the temperature at which a substance changes from a liquid to a gas.
Step 2: Identify the substances being compared. In this case, we are comparing different molecules.
Step 3: Learn about intermolecular forces. These are the forces that hold molecules together. The stronger the forces, the higher the boiling point.
Step 4: Recognize that CH4 (methane) has weak London dispersion forces. These are the weakest type of intermolecular forces.
Step 5: Compare the strength of intermolecular forces in CH4 with other molecules. If other molecules have stronger forces, they will have higher boiling points.
Step 6: Conclude that since CH4 has the weakest forces, it will have the lowest boiling point among the options given.

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