Chapter Name : Thermodynamics |
Sub Topic Code : 102_11_06_06_02 |
Topic Name : Spontaneity |
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Sub Topic Name : Entropy And Spontaneity |
• One can think of entropy as a measure of the degree of randomness or disorder in the system. • The greater the disorder in an isolated system, the higher is the entropy. • In a chemical reaction, this entropy change can be seen in the rearrangement of atoms or ions from one pattern in the reactants to another (in the products).
Enthalpy, reaction
Tossing a bag of coins.
How do products form when reactants come in contact?
Key Words | Definitions (pref. in our own words) |
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Spontaneous reaction | • A spontaneous reaction is one which occurs immediately when contact is made between the reactants. |
Gadgets | How it can be used |
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Tossing a bag of coins | The coins will toss up and then will fall randomly showing disorder |
Tossing a bag of coins.
Room.
Examples | Explainations |
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Tossing a bag of coins | There is higher probability that the coins would fall in different ways and not one on top of each other- high disorder. |
• The greater the disorder in an isolated system, the higher is the entropy. • In a chemical reaction, this entropy change can be seen in the rearrangement of atoms or ions from one pattern in the reactants to another (in the products).
For a given substance, the crystalline solid state is the state of lowest entropy (most ordered), The gaseous state is state of highest entropy.
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