Tabulate the changes of acid base indicators in the following sample solution
1. soap solution
2. tomato extract
3. lemon juice
4. oil
5. vinegar
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Answers
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1. Soap solution (basic):
Red litmus solution changes to blue
There is no change observed in blue litmus solution
Phenolphthalein: the color changes to pink
Methyl orange changes yellow
2. Tomato extract (acid):
Red litmus solution has no change
Blue litmus solution turns red
Phenolphthalein: The solution becomes colorless
Methyl orange changes to red color
3. Lemon juice (acid):
Red litmus solution has no change
Blue litmus solution turns red
Phenolphthalein: The solution becomes colorless
Methyl orange changes to red color
4. Oil (oil is neutral):
Red litmus solution has no change
Blue litmus solution has no change
Phenolphthalein: The solution becomes colorless
Methyl orange is orange in color
5. Vinegar (acid):
Red litmus solution has no change
Blue litmus solution turns red
Phenolphthalein: The solution becomes colorless
Methyl orange changes to red color