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pH of Common Substances and Compounds
pH of Common Substances and Compounds
![Page 2: PH of Common Substances and Compounds. Denise Arandia Michelle Armario Raisa Crisologo Joshua Fernandez Ryan Santos](https://reader036.vdocuments.us/reader036/viewer/2022062318/551bd352550346b9588b55e8/html5/thumbnails/2.jpg)
Denise ArandiaMichelle ArmarioRaisa Crisologo
Joshua FernandezRyan Santos
Denise ArandiaMichelle ArmarioRaisa Crisologo
Joshua FernandezRyan Santos
![Page 3: PH of Common Substances and Compounds. Denise Arandia Michelle Armario Raisa Crisologo Joshua Fernandez Ryan Santos](https://reader036.vdocuments.us/reader036/viewer/2022062318/551bd352550346b9588b55e8/html5/thumbnails/3.jpg)
Introduction
What is pH?
A measurement used in order to indicate whether a substance/mixture is acidic or basic.
The negative logarithm of the hydrogen ion concentration.
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Procedure
PART 1:
Number the test tubes from 1-13. Add 5 mL of each solution to each test tube.
Test Tube 1: Most concentrated acid
Test Tube 7: 0.01M NaCl solution
Test Tube 8: Least concentrated base.
Add a few drops of indicator solution and observe the results.
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Procedure
PART 2:
Determine the pH range of the various substances and mixtures suggested by the instructor.
Feminine WashTearsBody WashSugarSpriteAlcohol
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Results
[H3O+] (M) [OH-] (M) pH Color1 x 10-1 1 x 10-13 1 Dark red1 x 10-2 1 x 10-12 2 Red1 x 10-3 1 x 10-11 3 Red orange1 x 10-4 1 x 10-10 4 Orange1 x 10-5 1 x 10-9 5 Yellow orange1 x 10-6 1 x 10-8 6 Lighter yellow
orange1 x 10-7 1 x 10-7 7 Dark yellow1 x 10-8 1 x 10-6 8 Yellow1 x 10-9 1 x 10-5 9 Yellow green1 x 10-10 1 x 10-4 10 Darker yellow
green1 x 10-11 1 x 10-3 11 Green1 x 10-12 1 x 10-2 12 Blue1 x 10-13 1 x 10-1 13 Dark blue/
purple
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ResultsSubstance/Mixture
Observations pH Range
Feminine WashBubbly, yellow
orange5
Tears Dark green 11-12
Body WashBubbly, yellow
orange5
Sugar Yellow orange 7-8
Sprite Bubbly, light red 2-3
Acetone Red 1-2
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Conclusion
Indicator
Dye that changes color
Acid-base
Weak organic acids (different colors from their conjugate bases)
Range of hydrogen ions
Phenolphtalein
pH measured with pH meter (numerical value)
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ApplicationsApplications
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AquariumsAquariumsSome fish can only live
in a certain range of pH leve of water.An ideal pH for
goldfish to live safely is 6.6-8.4
Some fish can only live in a certain range of
pH leve of water.An ideal pH for
goldfish to live safely is 6.6-8.4
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Commercial Products
Commercial Products
Liquid soap usually has a pH level of 6-10.
Having a high pH level makes the soap more
anti-bacterial. Shampoo has a slightly acidic pH level since a more basic environment weakens
the hair.
Liquid soap usually has a pH level of 6-10.
Having a high pH level makes the soap more
anti-bacterial. Shampoo has a slightly acidic pH level since a more basic environment weakens
the hair.
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PlantsPlantsThe ideal pH living
conditions for common fruits and vegetables is around 4.5-7.5. Using
limestone could increase the pH level
of soil while using aluminum sulfate can
lower pH levels.
The ideal pH living conditions for common fruits and vegetables is around 4.5-7.5. Using
limestone could increase the pH level
of soil while using aluminum sulfate can
lower pH levels.
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Marine LifeMarine LifeCorals are very
sensitive to the pH of the seawater. They
only survive in 8.3-8.5 pH. If the pH of the seawater drops or
increases, the corals would eventually die.
Corals are very sensitive to the pH of
the seawater. They only survive in 8.3-8.5
pH. If the pH of the seawater drops or
increases, the corals would eventually die.