In a closed container, gas and a precipitate both form during a reaction, but nothing escapes. What is the correct conclusion about mass?
Answer and explanation
Correct answer: The total mass will remain the same.
The law of conservation of mass states that matter is neither created nor destroyed in a chemical reaction. In a closed container, the gas remains inside even though it may not be visible, and the precipitate also remains inside. Their physical forms change, but the total amount of matter is conserved. Therefore option A is correct. Gas formation does not remove mass, and precipitate formation does not create extra mass.
Frequently asked questions
What is the correct answer to this question?
The total mass will remain the same.
Why is this the correct answer?
The law of conservation of mass states that matter is neither created nor destroyed in a chemical reaction. In a closed container, the gas remains inside even though it may not be visible, and the precipitate also remains inside. Their physical forms change, but the total amount of matter is conserved. Therefore option A is correct. Gas formation does not remove mass, and precipitate formation does not create extra mass.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
