Chapter 5: Problem 69

Which of the following two statements is correct? (a) Heat is produced by the collision of gas molecules against one another. (b) When a gas is heated, the molecules collide with one another more often.

Short Answer

Expert verified

Statement (b) is correct: when a gas is heated, the molecules collide with one another more frequently.

Step by step solution

Understanding the Statements

Both statements are about the relationship between heat and gas molecule collisions. Statement (a) implies that heat results from the collision of gas molecules, while statement (b) suggests that increased heat makes gas molecules collide more frequently.

Fact-Checking Statement (a)

Referring to the kinetic theory of gases, we know that heat is a form of energy and it arises from the kinetic energy of the gas molecules, which is related to their motion. It is not produced by the collision of particles but by the increased motion of molecules with increased temperature. Therefore, statement (a) is incorrect.

Fact-Checking Statement (b)

Looking at statement (b), the kinetic theory of gases states that with increased temperature, the kinetic energy of the molecules increases, leading them to move faster and collide more frequently. Hence, statement (b) is correct as it is consistent with the principles of thermodynamics.

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Which of the following two statements is correct? (a) Heat is produced by the collision of gas molecules against one another. (b) When a gas is heated, the molecules collide with one another more often.

Short Answer

Step by step solution

Understanding the Statements

Fact-Checking Statement (a)

Fact-Checking Statement (b)

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