# Entropy Key Points and Definitions

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- Created by: une-meduse
- Created on: 04-06-13 20:36

## Other questions in this quiz

## 2. In calculations concerning ΔG= ΔH - TΔS entropy is worked out using K

- To convert C to K add 273 and the opposite to convert K to C
- The entropy change that accompanies a reaction in the molar quantities as expressed in a chemical equation under standard conditions, all in standard states

## 3. In calculations concerning ΔG= ΔH - TΔS 1, units must be the same for kJ/J

- The units need to be the same, to convert ΔS to kJ K^-1 mol^-1 /1000
- TΔS

## 4. Entropy increases during the changes in state that give more randomness, for example

- S is always a positive number
- solid (low entropy --> gas (high entropy)
- Decreases

## 5. For an endothermic reaction to take place spontaneously, ΔS must be positive, and the temperature must be high enough so that

- TΔS>ΔH
- TΔS
- The balance between enthalpy, entropy, and temperature for a process: ΔG = ΔH - TΔS

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