Question

Convert 4%w/v solution of sodium hypochlorite into 1%

Answer 1

Explanation:

This depends on the chlorine demand, which is that water can exist Iron (II), manganese, organic matter and ammonia, then their presence may consume chlorine and previously should evaluate how much chlorine is consumed and depending on bond this remnant is added regularly the minimum value recommended free chlorine is 0.3 mg / L, this after having reached the breaking point, which is where you will start to measure free chlorine. As comments Cotruvo consider necessary contact time and a minimum half hour is recommended, however this depends upon the desired microorganism inactivation, as in the case of Giardia is necessary to contact two hours.

Answer 2

Answer:

Answer :

• Assuming that one has a 1 litre bottle of liquid bleach containing 4 %4 % sodium hypochlorite. If I wish to dilute it down to 1 %1 % sodium hypochlorite (to use as disinfectant), would adding 3 litres of water to it, be sufficient? This should yield 4 litres of 1 % sodium hypochlorite.
• And that should be same as taking 250 ml of the liquid bleach, and then adding 750 ml of water, to yield 1 litre of 1 % sodium hypochlorite.