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You are here: Home / Class 10 / Acid Bases and Salts / Washing soda

Washing soda

Last Updated on August 21, 2020 By Mrs Shilpi Nagpal 13 Comments

Question 1 What is the chemical name and formula of washing soda?

Question 2 What is soda ash?

Question 3 Name a metal compound which has detergent properties?

Question 4 Name a sodium compound used for making borax and glass?

Question 5 Explain the preparation of washing soda by solvay’s process?

Question 6 Give uses of washing soda?

Question 7 Give few properties of washing soda?

Contents

  • 1 Washing Soda
  • 2 Preparation of Washing Soda
  • 3 Properties of Washing Soda
  • 4 Uses of Washing Soda 

Washing Soda

Washing soda is sodium carbonate containing 10 molecules of water of crystallisation.It is called as sodium carbonate decahydrate.

The formula of washing soda is
washing soda formula class 10
Sodium carbonate which does not contain any water of crystallisation is called anhydrous sodium carbonate or soda ash.The formula is Na2CO3
 

Preparation of Washing Soda

It is prepared by Solvay’s process.
 
(1) A cold and concentrated solution of sodium chloride is reacted with ammonia and carbon dioxide to obtain sodium hydrogen carbonate.
 
(2) Sodium hydrogen carbonate is separated by filtration,dried and heated.Oh heating sodium hydrogen carbonate decomposes to form sodium carbonate.

(3) Anhydrous sodium carbonate is dissolved in water and recrystallised to get washing soda crystals containing 10 molecules of water of crystallisation.

 

solvay process


Properties of Washing Soda

(1) It is a white transparent crystalline solid.
 
(2) It is soluble in water.
 
(3) The solution of washing soda in water is alkaline which turns red litmus to blue.
 
(4) It has cleansing properties.
 

Uses of Washing Soda 

(1) It is used to remove permanent hardness of water.
 
(2) It is used in the manufacture of glass,soap,paper.
 
(3) It is used for washing clothes.
 
(4) It is used in the manufacture of borax.

Filed Under: Acid Bases and Salts, Class 10 Tagged With: properties of washing soda, soda ash, sodium carbonate decahydrate, solvay's process, uses of washing soda, washing soda

About Mrs Shilpi Nagpal

Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of experience in teaching. She has started this educational website with the mindset of spreading Free Education to everyone.

Reader Interactions

Comments

  1. Prince says

    December 7, 2018 at 9:41 pm

    Good

    Reply
  2. Swarnam says

    March 11, 2019 at 9:20 pm

    Nice answer

    Reply
  3. Vikash says

    January 20, 2020 at 5:36 pm

    Nice one

    Reply
  4. shrikant says

    January 28, 2020 at 1:49 pm

    this is good one

    Reply
  5. Ashwini says

    March 7, 2020 at 7:36 am

    Nice good answer

    Reply
  6. RUCHI says

    May 21, 2020 at 11:35 am

    THANKS!! FOR THE ANSWER

    Reply
  7. Pragya says

    May 30, 2020 at 2:37 pm

    Good presentation

    Reply
  8. Avni says

    August 5, 2020 at 10:24 am

    Thank you for answer

    Reply
  9. John Cena says

    August 6, 2020 at 5:02 pm

    Helpful

    Reply
  10. Deep Yadav says

    February 7, 2021 at 10:04 pm

    Thanks mam

    Reply
  11. Vishal kumar says

    February 21, 2021 at 7:44 am

    Brillant answers

    Reply
  12. Sadiya Parveen says

    July 31, 2021 at 9:19 am

    Nice and best answer.

    Reply
  13. Raunak Naam Toh Suna Hoga says

    March 29, 2022 at 4:05 pm

    Excellent

    Reply

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