Molarity of Saturated Salt Essay Sample

In this lab. I will be able to happen two things. First. I will find the molar concentration of concentrated salt solutions and secondly I will cipher the Ksp and per centum mistake. I am should turn out that the concentration of a solid does non alter and besides I will acquire the Keq. The Ksp will be for both sodium chloride and K chloride. Three antecedently massed samples of KCl ( wate softner salt ) . three antecedently massed samples of NaCl ( Rock salt ) . mortal and pestle. two 50 milliliter beakers. 10. 0 milliliter Graduated cylinder. 2 Styrofoam cups. a thermometer. a rousing spoon. distilled H2O. and crushed ice 1. Get down off with the readying

2. ( for stairss 2 and 3 preciseness is a must ) First calibrate the dropper pipette. This is done by mensurating how many beads of distilled H2O from the pipette it takes to make full a 10. 0 milliliter graduated cylinder to the 1. 00 ml grade 3. Record how many beads of acetum it takes to make full 1. 00 ml 4. Record the test

5. Repeat steps 2. 3. and 4 until you have 3 different tests 6. Print out the informations tabular array
7. Fix two ice H2O baths by make fulling up a Styrofoam cup with crushed H2O and merely plenty H2O to cover up the ice 8. In one H2O bath. topographic point a 50 milliliter beaker three fourths full of distilled H2O. This will be the dissolver and should be as close to 0°C as possible. 9. In the 2nd H2O bath. topographic point an empty 50ml beaker. which will be the vas in the experiment. ( You’re ready to experiment ) 10. Record mass of KCl sample

11. Put the full sample in the howitzer and stamp and swot into a all right pulverization 12. Pour the sample in the 50ml beaker
13. Using the 10. 0 milliliter graduated cylinder and dropper pipette step out precisely 2. 0 milliliter of the chilled distilled H2O and add to the howitzer. 14. Twirl the H2O in howitzer in order to acquire the salt that remained. Then pour the H2O into the 50ml beaker where the remainder of the pulverization solution is 15. Record the volume of H2O added

16. Add beads of the chilled H2O in two bead increases and whirl for the solution to fade out 17. Continue to add two bead increases until full solid is dissolved. ( Keep path of entire chilled H2O. 18. Repeat stairss 10-17 but with the KCl and so for the NaCl ( retrieve to clean howitzer and stamp )

Calculation

2. KCl= K+ + Cl-
NaCL wholly dissociates
3. NaCl= . 15M
KCl= . 5M
4. H2Cl + KO
Na + ( aq ) + Cl- ( aq )
5. KCl= 7. 9006
NaCl= 38. 65

Discussion
1. NaCl about 20 %
KCl about 30 %
2. As we know a colder temperature will decelerate down a reaction. Possibly if we used room temperature H2O so the reaction would be excessively fast 3. I think that the Ksp values would alter. As the temperature alterations so does will the Ksp values.