Solution: Acid and Base

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SOLUTIONS
Title

I. Objective: To study some phenomena related solution.

II. Apparatus: Test tubes, Bunsen burner, mortar and pestle, conductivity Apparatus, test tube holder, calibrated test tube. III. Materials: Crystals of blue vitriol, benzoic acid, table salt, denatured alcohol, kerosene, 10ml of very diluted sulfuric acid, 2g brown sugar, 10ml of each of the following: 1 M solution of sodium acetate, ammonium chloride, ammonium hydroxide, sodium hydroxide and ethyl alcohol.

IV. Procedure and Observation
A. 1. Factors influencing Dissolving Velocity
A. Each of 5 test tubes was filled up with 10ml of diluted H2SO4 solution.

a. One crystal was dropped into the first test tube and set aside into the test tube rack, after several minutes the crystal was slowly dissolved. b. Another crystal was suspended into the second test tube by means of a sling made from a piece of mimeo paper about 1/4 inch wide and 4 inches long and set aside into the test tube rack, after several minutes the crystal was slowly dissolved. c. Powdered Blue Vitriol was placed into the third test tube and set aside into the test tube rack, after several minutes the powdered blue vitriol was slowly dissolved but faster than in 1.a and 1.b.

d. Powdered Blue Vitriol was placed into the fourth test tube and shaken vigorously until the powdered blue vitriol was totally dissolved. The powdered blue vitriol was dissolved faster compared to 1.c.

e. Powdered Blue Vitriol was placed into the fifth test tube which was heated solution. Continuously heating of the solution until the powdered blue vitriol was completely dissolved. The powdered blue vitriol was dissolved faster compared to 1.d.

B. Data and Results

|Solution |Factors |Rank | | | |(slowest -to- | | | |fastest) | |Blue Vitriol Crystals(CuSO4)+ H2SO4 |Particles Size |5 | |Blue Vitriol Crystals(CuSO4) + H2SO4 |Surface Area |4 | |Powdered Blue Vitriol (CuSO4) + H2SO4 |Particles Size |3 | |Powdered Blue Vitriol (CuSO4) + H2SO4 |Agitation |2 | |Powdered Blue Vitriol (CuSO4) + H2SO4 |Temperature |1 |

2. Solubility of Different Solutes in Different Solvents 1.a The 1/2g of table salt was divided into three equal portions in three separate test tubes. The first test tube was filled up with 2ml of H2O and the second test tube was filled up with 2ml kerosene. After filling up the two test tubes then shake. The third test tube was reserved for C.1.a. The table salt was dissolved most in the 2ml H2O, and least dissolved in kerosene. 1.b The benzoic acid was divided into two equal portions in two separate test tubes....
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