MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Indicators

when phenol i...

Question

when phenol is heated with pthalic anhydride in concentrated sulphuric acid and the hot reaction mixture is poured into a dilute solution of sodium hydroxide,the product formed is (a)Alizarin (b)Methyl orange (c)Fluorescein (d)Phenolphthalein

Open in App

Solution

Suggest Corrections

thumbs-up

1

Similar questions

Q. The treatment of phenol with phthalic anhydride in the presence of concentrated sulphuric acid produces :

Q. A mixture of phenol and phthalic anhydride when heated with conc.

H_{2} S O_{4}

forms ........................which is used as an indicator in acid-base titrations.

Q. When a mixture of solid sodium chloride,potassium dichromate is heated with concentrated sulphuric acid orange red vapours are formed, then compound formed is :

Q. State your observations when:
(i) Dilute hydrochloric acid is added to lead nitrate solution and the mixture is heated.
(ii) Barium chloride solution is mixed with sodium sulphate solution.
(iii) Concentrated sulphuric acid is added to sugar crystals.
(iv) Dilute hydrochloric acid is added to copper carbonate.
(v) Dilute hydrochloric acid is added to sodium thiosulphate.

Q. What are the products formed when phenol and nitrobenzene are treated separately with a mixture of concentrated sulphuric acid and concentrated nitric acid?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Visual Indicators

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Standard VII Chemistry

Join BYJU'S Learning Program

CrossIcon