Get premium membership and access questions with answers, video lessons as well as revision papers.

Describe an Experiment to show hygroscopic nature of concentrated sulphuric acid

      

Describe an Experiment to show hygroscopic nature of concentrated sulphuric acid.

  

Answers


Kavungya
(i). Procedure
- A small beaker half full of conc. H2SO4 is weighed.
- Level of acid in beaker is marked to the outside using gummed paper.
- Acid is left exposed to air for a week or so then weighed again and level also noted.

(ii). Observations
- There is an increase in weight of acid.
- Level of acid in beaker is now above the paper mark.

(iii). Explanations
- The increase in weight and size is due to water absorbed form the air by the conc. sulphuric (VI) acid.
Note:
- This explains why sulphuric (VI) acid is used as a drying agent.
Kavungya answered the question on April 29, 2019 at 12:33


Next: The diagram below shows a cross-section of a bottle. The lower part ABC is a hemisphere of radius 5.2cm and the upper part is a frustrum...
Previous: Describe the action of sulphuric (VI) acid on blue hydrated copper (II) sulphate.

View More Chemistry Questions and Answers | Return to Questions Index


Learn High School English on YouTube

Related Questions