Entropy is a measure of the disorder or randomness of a system. In general, a reaction will lead to an increase in entropy if the number of gas molecules increases, and a decrease in entropy if the number of gas molecules decreases.

Let's analyze each reaction:

A. CO(g) + 3H2(g) - CH4(g) + H2O(g)
In this reaction, 4 molecules of gas react to form 2 molecules of gas. This is a decrease in the number of gas molecules, so entropy would decrease.

B. 2NH3(g) - N2(g) + 3H2(g)
In this reaction, 2 molecules of gas react to form 4 molecules of gas. This is an increase in the number of gas molecules, so entropy would increase.

C. 2NOCl(g) - 2NO(g) + Cl2(g)
In this reaction, 2 molecules of gas react to form 3 molecules of gas. This is an increase in the number of gas molecules, so entropy would increase.

D. 2CCl4(g) + O2(g) - 2COCl2(g) + 2Cl2(g)
In this reaction, 3 molecules of gas react to form 4 molecules of gas. This is an increase in the number of gas molecules, so entropy would increase.

Therefore, the reaction that would cause a decrease in entropy is A. CO(g) + 3H2(g) - CH4(g) + H2O(g).

Question

Entropy is a measure of the disorder or randomness of a system. In general, a reaction will lead to an increase in entropy if the number of gas molecules increases, and a decrease in entropy if the number of gas molecules decreases.

Let's analyze each reaction:

A. CO(g) + 3H2(g) -> CH4(g) + H2O(g)
In this reaction, 4 molecules of gas react to form 2 molecules of gas. This is a decrease in the number of gas molecules, so entropy would decrease.

B. 2NH3(g) -> N2(g) + 3H2(g)
In this reaction, 2 molecules of gas react to form 4 molecules of gas. This is an increase in the number of gas molecules, so entropy would increase.

C. 2NOCl(g) -> 2NO(g) + Cl2(g)
In this reaction, 2 molecules of gas react to form 3 molecules of gas. This is an increase in the number of gas molecules, so entropy would increase.

D. 2CCl4(g) + O2(g) -> 2COCl2(g) + 2Cl2(g)
In this reaction, 3 molecules of gas react to form 4 molecules of gas. This is an increase in the number of gas molecules, so entropy would increase.

Therefore, the reaction that would cause a decrease in entropy is A. CO(g) + 3H2(g) -> CH4(g) + H2O(g).

Knowee AI · Accepted Answer

Entropy is a measure of the disorder or randomness of a system. In general, a reaction will lead to an increase in entropy if the number of gas molecules increases, and a decrease in entropy if the number of gas molecules decreases.

Let's analyze each reaction:

A. CO(g) + 3H2(g) -> CH4(g) + H2O(g)
In this reaction, 4 molecules of gas react to form 2 molecules of gas. This is a decrease in the number of gas molecules, so entropy would decrease.

B. 2NH3(g) -> N2(g) + 3H2(g)
In this reaction, 2 molecules of gas react to form 4 molecules of gas. This is an increase in the number of gas molecules, so entropy would increase.

C. 2NOCl(g) -> 2NO(g) + Cl2(g)
In this reaction, 2 molecules of gas react to form 3 molecules of gas. This is an increase in the number of gas molecules, so entropy would increase.

D. 2CCl4(g) + O2(g) -> 2COCl2(g) + 2Cl2(g)
In this reaction, 3 molecules of gas react to form 4 molecules of gas. This is an increase in the number of gas molecules, so entropy would increase.

Therefore, the reaction that would cause a decrease in entropy is A. CO(g) + 3H2(g) -> CH4(g) + H2O(g).

Which reaction would cause a decrease in entropy?A.CO(g) + 3H2(g) CH4(g) + H2O(g)B.2NH3(g) N2(g) + 3H2(g)C.2NOCl(g) 2NO(g) + Cl2(g)D.2CCl4(g) + O2(g) 2COCl2(g) + 2Cl2(g)

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