Hypothesis:
The more polar the substance, the higher the solubility product of salt. If
temperature is increased, then the solubility will increase, more effectively
for the polar substances.
1) Pour
100mL of water into a 250mL conical flask. Measure out 38g of salt and add to
the solution. Stir until dissolved.
2) Fill a
burette with silver nitrate and add a potassium permanganate indicator to the
NaCl solution. Slowly titrate the silver nitrate into the solution, stopping
when the precipitate turns brick red. Record the amount of silver nitrate used,
and consequently discover the amount of chlorine ions.
NOTE: The
silver nitrate should react with the chloride ions, which will then react with
the potassium permanganate indicator to create a brick red color. The titration
will then be complete, because the chlorine will only react with the indicator
when all the ions in the solution have been used up
3)
Calculate the Ksp, knowing the chlorine concentration.
4) Repeat
procedure for ethanol and oil.
5) Repeat
the procedure for same substances, though heat over a temperature of 80 degrees
before titration.
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