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3 years ago

During which changes of state does the motion of the atoms decrease?

Chemistry

2 answers:

lesantik [10]3 years ago

4 0

freezing and condensation

Explanation:

The motion of the atoms decreases during freezing and condensation. These are phase changes that increases the molecular attraction between particles and forces them to come closer.

Freezing is a phase change from liquid to solid. It is usually achieved by removing heat from a substance and cooling it.

Condensation is a phase change from gases to liquid. .

Gases have the greatest motion because they have little to no attractive forces between them.

Phase changes from gas to solid to liquid generally reduces the motion of the atoms.

Learn more:

Phase change brainly.com/question/1875234

#learnwithBrainly

Thepotemich [5.8K]3 years ago

3 0

Answer:

FREEZING AND CONDENSATION

Explanation:

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(a) At constant volume condition the entropy change of the gas is:

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$C_v=19.939J/K.mole$

Now we have to calculate the entropy change of the gas.

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$\Delta S=-2.388\times 19.939J/K.mole\ln \frac{369.5K}{299.5K}=-10J$

(b) As we know that, the work done for isochoric (constant volume) is equal to zero. $(w=-pdV)$

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$q=n\times C_v\times (T_2-T_1)=2.388mole\times 19.939J/K.mole\times (369.5-299.5)K= 3333.003J$

Therefore, the work, heat during the process and the change of entropy of the gas are, 0 J, 3333.003 J and -10 J respectively.

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