what is ph paper pls answer it
Answers
Answer:
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Answer:
Good morning Have a great day my dear friend...
Explanation:
A pH indicator is a halochromic chemical compound added in small amounts to a solution so the pH of the solution can be determined visually. Hence, a pH indicator is a chemical detector for hydronium ions or hydrogen ions in the Arrhenius model.
Titration
Acid–base titration
Indicator Color on acidic side Color on basic side
Methyl red Red Yellow
Litmus Red Blue
Bromothymol blue Yellow Blue
Phenolphthalein Colorless
Methods
Find the pH of a substance using pH paper. Dip the end of the pH strip into the chemical or substance you want to test. After a couple of seconds, remove the paper and compare the color of the pH strip to the color chart provided with the pH paper kit. Do not re-use a pH paper to retest or test another chemical.
Pka
Acid-Base Indicators
Indicator pH Range pKa
Methyl yellow 2.9 to 4.0 3.3
Methyl orange 3.1 to 4.4 3.4
Bromophenol blue 3.0 to 4.6 3.85
Bromocresol green 4.0 to 5.6 4.7
Range
Indicator Range
Indicator Colour pH range
Bromothymol Blue yellow 6.0 - 7.6
Phenol Red yellow 6.8 - 8.4
Thymol Blue - 2nd change yellow 8.0 - 9.6
Phenolphthalein colourless 8.2 - 10.0