Write chemical formula of washing soda. How is it obtained from baking soda? List two uses of washing soda.
Write chemical formula of washing soda. How is it obtained from baking soda? List two uses of washing soda.
Official answer
The chemical formula of washing soda is Na2CO3·10H2O.
Washing soda is obtained from baking soda by the reaction:
2NaHCO3 Na2CO3 + H2O + CO2
Two uses of washing soda are:
- It is used in glass, soap, and paper industries.
- It is used to remove the permanent hardness of water.
Analysis and explanation
The question asks for the chemical formula of washing soda, how it is obtained from baking soda, and lists two uses of washing soda. The chemical formula of washing soda is Na2CO3·10H2O. Washing soda is obtained from baking soda by the reaction: 2NaHCO3 Na2CO3 + H2O + CO2. Two uses of washing soda are: 1. It is used in glass, soap, and paper industries. 2. It is used to remove the permanent hardness of water.
Question details
Q27 of 39 questions
- Board
- CBSE
- Class
- Class 10
- Subject
- Science
- Year
- 2025
- Section
- Section C
- Marks
- 3
- Type
- Short Answer
- Chapter
- Acids, Bases and Salts
- Topic
- Salts
- Bloom's level
- Remembering
- Syllabus topic
- Salts
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Frequently asked questions
How many marks does this question carry in CBSE Class 10 Science 2025?
This question carries 3 marks in the CBSE Class 10 Science 2025 examination.
Which chapter does this question come from in Science?
This question is from the chapter "Acids, Bases and Salts" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Salts" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2025 paper?
This is a Short Answer question from Section C in the CBSE Class 10 Science 2025 paper.