When we can say that reaction has taken place????.
Answers
Answered by
14
Answer:
Ans: — When we observe
✓ Change in state
✓ Change in colour
✓ Change in temperature
✓ Evolution of gas
Answered by
2
Answer:
- There has been a colour change inside the reaction flask.
- A gas has formed. Usually we know a gas has formed when we can see bubbles. ...
- A solid has formed.
- change in colour
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