Effect of Temperature on Solubility

1. The problem statement, all variables and given/known data

I did an experiment to test the effect of temperature on solubility. A hot water was add to salicylic acid and stirred. More salicylic acid was add until some of it remained undissolved. Samples of the mixture of water and the salicylic acid was taken at 50, 45, 40, 35, 30 and 25 degrees. Each sample was titrated with 0.02M NaOH

1)I was wondering if someone can explain the equilibrium of a solid and a saturated solution and equilibrium constant.

2) Could somebody explain these equations to me:

lnB = -delta H/RT + delta S/R

delta G = delta H - T(delta S)

2) Using a lnB versus 1/T graph how would u find Delta H.

2. Relevant equations

3. The attempt at a solution
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution
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