5.2.2 Enthalpy and entropy

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Last updated 7:03 AM on 5/8/26
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4 Terms

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(a) Define entropy

meausre of dispersal of energy in a system

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(b)(i) Explain how entropy changes when a substance changes from solid → liquid/ liquid → gas

entropy increases because there is more dispersal of energy

<p>entropy increases because there is more dispersal of energy </p>
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(b)(ii) How does entropy change when there is an increase in the number of gaseos molecules?

entropy increases

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(c) What is the formula used to calculate entropy change?

entropy of products - entropy of reactants

<p>entropy of products - entropy of reactants</p>