What are the main reasons that gases deviate from ideal behavior?

[Select all that apply.]

Question

What are the main reasons that gases deviate from ideal behavior?

[Select all that apply.]

BlackTom AI · Accepted Answer

When evaluating why gases deviate from ideal behavior, we must consider the assumptions behind the ideal gas model and what real gases exhibit differently.
Option 1: 'Gas molecules have finite sizes.' Real gas molecules occupy a physical volume, so the available space for movement is reduced compared to an ideal gas assumption of point particles. This finite size leads to deviations especially at high pressures or low volumes where particle volume becomes non-negligible.
Option 2: 'Gas molecules do interact through intermolecular forces.' In real gases, attractions and repulsions between molecules (van der Waals forces, dipole interactions, etc.) influence energy, pressure, and compression behavior, causing deviations from ideal gas predictions, particularly at high pressures or low temperatures where such forces become more significant.
Option 3: 'Gas molecules do not interact through intermolecular forces.' This contradicts real-gas behavior; in reality, intermolecular forces do exist and contribute to deviations, so this statement is incorrect as a reason for deviation.
Option 4: 'The temperature is not proportional to the mean kinetic energy (ε) of the gas.' For an ideal gas, temperature is directly related to the mean kinetic energy. In deviations from ideality, the simple proportionality can break down due to interactions and finite size effects, but generally the foundational relationship T ∝ mean KE is still a guiding concept; the statement as a blanket claim is misleading because the proportionality remains a thermodynamic principle, whereas deviations arise from other factors. Therefore, this option is not a primary correct reason for deviation in the context of the ideal-gas model.
In summary, the correct considerations for deviations are the finite size of molecules and intermolecular forces, which align with options 1 and 2. The other statements do not accurately describe the main causes of deviation in real gases.

CHEM 110 Section 3 (PM) SP25 Pre-Lecture 27 Quiz C12-4-6

What are the main reasons that gases deviate from ideal behavior? [Select all that apply.]

View Explanation

Log in for full answers

Similar Questions

The van der Waals equation accounts for the deviation of real gases from ideal gases. Identify which of the following statements is correct. The deviation from ideal behaviour:

Of the following gases, which displays the largest degree of deviation from ideality where the pressure of the real gas is lower than that calculated via the ideal gas equation.

At low temperatures and pressures, how does the volume of a real gas compare with the volume of an ideal gas under the same conditions?

In a consumer society, many adults channel creativity into buying things

Economic stress and unpredictable times have resulted in a booming industry for self-help products

People born without creativity never can develop it

A product has a selling price of $20, a contribution margin ratio of 40% and fixed cost of $120,000. To make a profit of $30,000. The number of units that must be sold is: Type the number without $ and a comma. Eg: 20000

Which of the following statement regarding cost is correct:

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler