Deviations from Ideal Gas Law - AP Chemistry

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Question

Which of the following would behave most like an ideal gas?

Answer

is the smallest molecule in the list, and therefore the least size effects.

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Question

When does a gas behave most like an ideal gas?

Answer

The ideal gas law assumes the gas particles are non-interacting and small relative to the size of their container. At high temperatures the gas molecules are moving fast enough to shorten the time scale for any interactions. At high volumes, the molecular size becomes small relative to the size of the container, and the low interactions mean the molecules act more independently.

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Question

Under which conditions would you expect Ar to deviate the most from ideal behavior?

Answer

The ideal gas law assumes the gas particles are non-interacting and small relative to the size of their container. At 200K (lowest temperature in the list, and the highest pressure). This gives Ar the most time to interact due to molecular speeds and the high pressure implies the molecular size is not insignificant relative to the container.

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Question

Would you expect a polar or non polar gas to deviate most from ideal gas behavior?

Answer

Polar gases would have increased interactions due to their dipoles that would lead to deviations from ideal gas behavior.

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Question

Why do gases deviate from ideal behavior as the temperature is decreased?

Answer

The ideal gas law assumes the gas particles are non-interacting and small relative to the size of their container. As the temperature is decreased the gas molecules are moving slower and allow for a greater degree of interaction.

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Question

Which of the following would behave most like an ideal gas?

Answer

is the smallest molecule in the list, and therefore the least size effects.

Compare your answer with the correct one above

Question

When does a gas behave most like an ideal gas?

Answer

The ideal gas law assumes the gas particles are non-interacting and small relative to the size of their container. At high temperatures the gas molecules are moving fast enough to shorten the time scale for any interactions. At high volumes, the molecular size becomes small relative to the size of the container, and the low interactions mean the molecules act more independently.

Compare your answer with the correct one above

Question

Under which conditions would you expect Ar to deviate the most from ideal behavior?

Answer

The ideal gas law assumes the gas particles are non-interacting and small relative to the size of their container. At 200K (lowest temperature in the list, and the highest pressure). This gives Ar the most time to interact due to molecular speeds and the high pressure implies the molecular size is not insignificant relative to the container.

Compare your answer with the correct one above

Question

Would you expect a polar or non polar gas to deviate most from ideal gas behavior?

Answer

Polar gases would have increased interactions due to their dipoles that would lead to deviations from ideal gas behavior.

Compare your answer with the correct one above

Question

Why do gases deviate from ideal behavior as the temperature is decreased?

Answer

The ideal gas law assumes the gas particles are non-interacting and small relative to the size of their container. As the temperature is decreased the gas molecules are moving slower and allow for a greater degree of interaction.

Compare your answer with the correct one above

Question

Which of the following would behave most like an ideal gas?

Answer

is the smallest molecule in the list, and therefore the least size effects.

Compare your answer with the correct one above

Question

When does a gas behave most like an ideal gas?

Answer

The ideal gas law assumes the gas particles are non-interacting and small relative to the size of their container. At high temperatures the gas molecules are moving fast enough to shorten the time scale for any interactions. At high volumes, the molecular size becomes small relative to the size of the container, and the low interactions mean the molecules act more independently.

Compare your answer with the correct one above

Question

Under which conditions would you expect Ar to deviate the most from ideal behavior?

Answer

The ideal gas law assumes the gas particles are non-interacting and small relative to the size of their container. At 200K (lowest temperature in the list, and the highest pressure). This gives Ar the most time to interact due to molecular speeds and the high pressure implies the molecular size is not insignificant relative to the container.

Compare your answer with the correct one above

Question

Would you expect a polar or non polar gas to deviate most from ideal gas behavior?

Answer

Polar gases would have increased interactions due to their dipoles that would lead to deviations from ideal gas behavior.

Compare your answer with the correct one above

Question

Why do gases deviate from ideal behavior as the temperature is decreased?

Answer

The ideal gas law assumes the gas particles are non-interacting and small relative to the size of their container. As the temperature is decreased the gas molecules are moving slower and allow for a greater degree of interaction.

Compare your answer with the correct one above

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