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5.06 Lab Activity: Acid and Base indicators

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Katherine Mckissick

on 3 April 2014

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Transcript of 5.06 Lab Activity: Acid and Base indicators

5.06 Lab Activity:
Acid and Base indicators
Katherine Mckissick
Hypothesis
Hypothesize whether you think each of the following substances will be an acid, a base, or neutral:

-Bleach will be a base
-Detergent will be a base
-Eye drops will be neutral
-Lemon juice will be acidic
-Tea will be acidic

Data Chart
Bleach
Detergent
Eye Drops
Lemon Juice
Tea
Initial color of solution
Final color of solution
pH
Acid
Base
Neutral
Lime Green
Yellow
>12
Base
Green
Light Blue
8-10
Base
Light Blue
Blue
7
Neutral
Yellow
Red
1-3
Acid
Brown
Purple
4-6
Acid
Conclusion
1.Lemon Juice 1-3
Tea 4-6
Eye Drops 7
Detergent 8-10
Bleach >12

2. Purple
3. Determining the pH of substances such as purple grape juice and catsup using test strips can be difficult because they are both dark bold colors.
4. Tear free shampoos have the same pH as eye drops, which is a neutral 7.
5. Hydronium ion is higher than Hydroxide. The concentration of a cup of tea is about 1x10^-4-1x10^-6. The hydroxide concentration of a cup of tea is about 1x10^-10-1x10^-8
6. Hydroxide is higher then hydronium. Hydronium ion concentration in bleach is 1x10^-13-1x10^-14. The hydroxide ion concentration is 1x10^-1-1x10^-0.
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