BASIC EQUILIBRIUM QUESTION! no calculation
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BASIC EQUILIBRIUM QUESTION! no calculation

[From: ] [author: ] [Date: 11-07-07] [Hit: ]
and free energy all related together?i have a basic understanding of what they all mean, but i cannot link them together, also is temperature, enthlapy, and entropy just different types of favorable change?......
I am just wondering how favorable chemical change, temperature, enthalpy, entropy, and free energy all related together?

i have a basic understanding of what they all mean, but i cannot link them together, also is temperature, enthlapy, and entropy just different types of favorable change?

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Don't think of them as necessarily related. In equilibrium, Temperature increases the average kinetic energy of the particles in solution. This in turn increases solubility and increases the amount of time it takes a reaction to reach equilibrium. This does not change the position of equilibrium just the rate at which equilibrium in a reaction is reached. An increase in temperature also increases entropy which is a measure of disorder. Generally for a solution to mix the entropy should increase. For gases, particles are moving very fast so the disorder of the particles in solution is high, high entropy. Depending on what chemistry your in you dont need to know very much about free energy because it is pretty complicating. Enthalpy is just a measure of the heat of the solution. If heat is added to the reactants, it shifts equilibrium towards the products and this works the other way around as well. Many things can be computed from enthalpy changes. If enthalpy is positive it also tells you the solution is a liquid and if it is negative it tells you the solution being mixed is gaseous.
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