Ksp Lab Report: The Solubility Properties of the Salt (Lab Report Sample)

Name
Tutor
Subject
Date
Ksp Lab Report
Abstract
Different salts have different solubility properties which are also affected by external environmental conditions. This property can be determined experimentally at 00C using chilled water to determine the various values of the Ksp values for the solids. Therefore, this practical’s aim is to ascertain the Ksp values of two salts, NaCl, and KCl.
Introduction
The ability of different salts such as those of magnesium, barium, and potassium, just to mention a few, is commonly based on the solubility product constant (Ksp).Therefore, the lower the Ksp value of the salt, the lower its solubility.
These experiments can be achieved in the laboratory by having specific amounts of the test salts at temperatures of 00C and recording the amount of cold water required to dissolve the solids. By calculating the molarity values of this dissolved ions, it's possible to measure the Ksp values and measure the degree of solubility.
Materials
Pre massed salts (KCl (s) and NaC l(s) )
Mortar and pestle
2-250 ml Beakers
10.0 ml Graduated Cylinder
2 Styrofoam cups
Thermometer
Stirring spoon
Distilled water
Crushed ice
Procedure
The Dropper Pipette was calibrated using graduated cylinder and the calibration repeated three times. The results were recorded and an average value determined. KCl solid sample was then crushed in a mortar, and the powder poured into a 50 ml beaker placed in a cold water bath. This was followed by dissolving the solid in 2 ml of water and dropwise addition until the whole solid had dissolved.The total volume was the recorded. Three trials were performed following the same process.
NaCl was also dissolved following the same procedure and the total volume recorded in a data table.
Results
The table contains the trail measures during the calibration of the pipette.
Trials number

Number of drops(1.0 ml)

1

5

2

6

3

6

Average number of drops=5.7 drops =1.0ml
Calculations
Trial
Number

Original
mass of sample (g)

Volume of
water (mL) added to rinse salt

Number of
drops of water added to saturation

Total
volume (mL) water added

Moles of
salt added

Molarity
(M) of salt solution

NaCl – 1

2.5

2

12

2

0.04

20

NaCl – 2

2.5

2

12

2

0.04

20

NaCl – 3

2.5

2

12

2

0.04

20

KCl – 4

2.5

2

12

2

0.03

15

KCl – 5

2.5

2

12

2

0.03

15