Entropy is the measure of randomness or disorder of a system. If a system moves from an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.

$\Delta S$ is positive when randomness increases and $\Delta S$ is negative when randomness decreases.

$2H_2S(g)+3O_2(g)\rightarrow 2H_2O(g)+2SO_2(g)$

As there are 5 moles of gaseous reactants and 4 moles of gaseous products, the gaseous molecules are decreasing on moving from reactants to products, thus randomness decreases and $\Delta S$ is negative.

Thus $\Delta S^0$ has a small negative value.

5 0

2 years ago

True or flas a series of repeated fission reactions caused by the release of neutrons in each reaction

Dafna11 [192]

I think the answer is true but I'm not very sure

4 0

3 years ago

Read 2 more answers

Bromine boils at 59°C chemical or physical?

Anarel [89]

Boiling is an example of a physical change.

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3 years ago