ISCI2002 Grantham University Acid Base Chemistry Laboratory Exercise PLEASE view the attached worksheet and complete it with CORRECT ANSWERS!I cannot fail

ISCI2002 Grantham University Acid Base Chemistry Laboratory Exercise PLEASE view the attached worksheet and complete it with CORRECT ANSWERS!I cannot fail this worksshet so I need a PHYSICAL SCIENCE EXPERT for this short worksheet Acid/Base Chemistry
Laboratory Exercises for ISCI 2002
Acid: a proton (H+) donor Base: a proton acceptor [usually results in hydroxide (OH-) in aqueous
solution]
Water acts as both an acid and a base (or, undergoes self-ionization in pure water):
H2O +H2O
H3O+ + OH? or H2O
H+ + OH?
H+ concentration and OH? concentration in pure water are equal, pH=7.
In ACIDIC solutions, H+ concentration is greater than OH? concentration, pH7.
For this experiment, we will test several common household items for their acid/base chemical
characteristic. We will use two different “indicators” to identify the acidity or basicity of the solutions.
Indicator 1: Prepare the red cabbage indicator according to the instructions below the table.
Indicator 2 OPTIONAL: You can probably get a few pieces from a local school chemistry or biology
teacher. Litmus paper is made from a lichen-derived dye (use just a small piece of a strip for each
Test Solution).
PROCEDURE: Prepare each Test Solution as directed [if you have the materials available – test at
least 5 solutions]. Test the solutions with the red cabbage indicator by adding 5 mL (1 tsp) of the
indicator to 15 mL (1 Tbs) of the Test Solution. Test the solutions with the litmus by dipping a piece
of a litmus strips (one “Red” [pink] and one “Blue” [purple] strip) in the prepared Test Solution.
Use the blanks for additional test solutions of your choice.
Test Solution
Result with Red Cabbage
Result with Red/Blue Litmus Paper
EXAMPLE: ¼ tsp drain cleaner 25 mL in water
Blue-Green
Red turned blue/Blue stayed blue
1 tsp household ammonia in 25 mL water
1 tsp baking soda dissolved in 25 mL water
1 tsp table salt dissolved in 25 mL water
1 tsp table sugar dissolved in 25 mL water
1 tsp vinegar dissolved in 25 mL water
1 antacid tablet dissolved in 25 mL water
¼ tsp muriatic acid dissolved in 25 mL water
1 tsp lemon juice dissolved in 25 mL water
Directions for preparing red cabbage indicator: Chop the red cabbage into small pieces until you have about 2 cups
of cabbage. Place it in a large glass container & add boiling water to cover the cabbage. Allow at least ten minutes for
the color to leach out of the cabbage. Alternatively, you can place about 2 cups of cabbage in a blender, cover it with
boiling water, and blend it. Filter out the plant material to obtain a red-purple-bluish colored liquid.

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