Question

Write the effect of caustic soda on methyl orange,phenolphthalein and blue litmus

Answer 1

Hlo friend

Here ur answer

My science mam teached me this

So,
methyl orange-some yellowish colour
phenolphthalein-pink
blue litmus-blue-no change happened

Answer 2

Answer:

The caustic soda on methyl orange is that it turn to yellow, phenolphthalein to pink and blue litmus to blue.

Explanation:

Caustic soda is also known as sodium hydroxide and has a formula of NaOH. It is a basic compound therefore on testing with litmus paper it would turn red litmus blue. Therefore, when came in contact with blue litmus it become unchanged.

The methyl orange works as an indicator to caustic soda so it changes its color to yellow.

Phenolphthalein also works as an indicator for caustic soda. In titration experiment the phenolphthalein turns to pink. Although, phenolphthalein is not a good indicator for weak base.