The indicator which is used to find the strength of caustic soda solution with the help of oxalic acid is:
Methyl orange
Phenolphthalein
Potassium permanganate
None of the above
A
Phenolphthalein
B
Methyl orange
C
None of the above
D
Potassium permanganate
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Solution
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An indicator is a chemical substance that undergoes a colour change at the endpoint. The endpoint of an acid-base titration can be determined using acid-base indicators. Acid Base indicators are either weak organic acids or weak organic bases. The colour change of an indicator depends on the pH of the medium. The un-ionized form of an indicator has one colour, but its ionized form has a different colour
Phenolphthalein is used to find the strength of caustic soda solution with the help of oxalic acid
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The indicator which is used to find the strength of caustic soda solution with the help of oxalic acid is:
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