How to neutralise chlorine gas?
Answer:
I think you need to put NaOH into your electrolysis vessel.
The reaction "SHOULD" occur:
2NaOH + Cl2 => NaCl + NaClO + H2O
Chlorine gas is a yellow greenish gas and it's poisonous.
Sodium is a silver solid andd it's also poisonous.
When you mix sodium and chlorine together, you will get NaCl, i.e. sodium chloride. Sodium chloride is our salt and it's not poisonous.
by adding hydrogens
NaCl melts at about 800°C (1074K). That's less than 100K below the boiling point of metallic sodium, so make sure your melt doesn't get too hot, or sodium and chlorine vapors might meet explosively.
If the electrodes are sufficiently far apart, the metallic sodium will react with oxygen from the air (forming sodium peroxide, Na2O2) before reacting with the chlorine gas evaporating.
Since chlorine gas is highly oxidative and toxic, the experiment should be done in an air-cycling cabinet. To neutralize significant amounts of chlorine gas exhaust, lead it through an alkaline solution with some reducing agent. A charcoal filter will do for small amounts (offering a reactant surface where reducing agents can get into contact with the chlorine)..
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