The last step during preparation of soap is to pour the mixture of oil and sodium hydroxide.
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I am not sure about this because my brother told me this and I hardly know if it is right or wrong
Fill four, 6-inch test tubes one-third full with deionized water. Place a small amount of the soap in each test tube and mix the soap and water well.
A. Test the pH of the first tube by dipping a clean stirring rod into the solution and touching the solution to both red and blue litmus paper. Record your observations on the Data Sheet.
B. In the second test tube add several drops of calcium chloride solution. Record your observations.
C. In the third test tube add several drops of iron(III) chloride solution. Record your observations.
D. In the fourth test tube add a single drop of kerosene and shake the solution. Record your observations.
18. Pour the contents of the four test tubes into the designated waste container.
Fill four, 6-inch test tubes one-third full with deionized water. Place a small amount of the soap in each test tube and mix the soap and water well.
A. Test the pH of the first tube by dipping a clean stirring rod into the solution and touching the solution to both red and blue litmus paper. Record your observations on the Data Sheet.
B. In the second test tube add several drops of calcium chloride solution. Record your observations.
C. In the third test tube add several drops of iron(III) chloride solution. Record your observations.
D. In the fourth test tube add a single drop of kerosene and shake the solution. Record your observations.
18. Pour the contents of the four test tubes into the designated waste container.
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