Upgrade to remove ads
Terms in this set (8)
What are the substances used to treat water?
Chlorine, Cl₂, Hypochlorous acid, HOCl, and Hypochlorite OCl⁻.
What are the dangers of using chlorine gas?
The green gas is highly toxic, corrosive and attacks mucous linings of eye, nose, throat and lungs.
What are the properties of hypochlorous acid?
small size and lack of charge makes it effective at penetrating the non-polar bacterial cell walls.
Show the equation of chlorine ionizing in water.
Cl₂ + 2H₂O ↔ HOCl + H₃O⁺ + Cl⁻
What is the ideal pH of the reaction of Cl₂ and water? and why?
pH = 4 because at <4 there is more Cl₂ (ie not in equlibrium) and at >4 the reaction is 100% to the right and therefore minimal Cl₂
What is the ionisation of hypochlorous acid in water?
HOCl + H₂O ↔ H₃O⁺ + OCl⁻
This is partial ionisation as hypochlorous acid is weak.
What is the ionisation of the hypochlorite ion in water?
OCl⁻ + H₂O ↔ HOCl + OH⁻
What form does the hypochlorite ion usually come in
sodium hypochlorite or calcium hypochlorite.
THIS SET IS OFTEN IN FOLDERS WITH...
Nitrogen and Phosphorous
OTHER SETS BY THIS CREATOR