Chlorine is a pale green gas so you would be able to see it.
In water, you can add universal indicator paper which will first turn red as its an acidic solution (HCl) and then turn white because HCl is essentially bleach so it would blech the indicator paper.
Chlorine is a pale green gas so you would be able to see it.
In water, you can add universal indicator paper which will first turn red as its an acidic solution (HCl) and then turn white because HCl is essentially bleach so it would blech the indicator paper.
Chlorine is a pale green gas so you would be able to see it.
In water, you can add universal indicator paper which will first turn red as its an acidic solution (HCl) and then turn white because HCl is essentially bleach so it would blech the indicator paper.