– Procedure – 1. Disinfect water using household bleach, if you can’t boil water. Use detergent and water to clean a surface, and then use bleach and water to disinfect it. Then rinse before drying. Bleach can be diluted with cold water to make an effective disinfectant against bacteria, fungi, and many viruses including coronaviruses. Thus, 1ml of bleaching powder solution contains bleaching powder … Since amount of bleaching powder required for disinfecting POND WATER is more than that required for TANK WATER, thus it can be concluded that former contains more impurities. Alcohol. Bleaching powder or Calcium hypochlorite is a chemical compound with formula Ca(ClO)2. （1） Clear the pond and disinfect. This is a weak disinfectant and it should be avoided. For large scale use in societies, apartments, offices, etc bulk quantities can be bought. 70% HTH Bucket with lid Water Stick for stirring Label Label bucket “Strong (0.5%) Chlorine … As a bleaching agent for domestic use it usually contains 5% sodium hypochlorite (with a pH of around 11, it is irritating). Use and Expiration Household chlorine bleach is a powerful disinfectant that is inexpensive, easy to obtain, and strong enough to kill dangerous germs. Dissolve the required amount of bleaching powder in water 4. taken 20ml,  Volume of different samples of water 100ml, Amount of bleaching powder used to disinfect 100ml of tap water = (8.2 – 10.1) ml of 0.2 N of Na2S4O6 solution, Since, 250ml bleaching powder solution contains 2.5g bleaching powder, Thus, 1ml of bleaching powder solution contains bleaching powder =2.5/250 = 0.01g, Also, 20ml of bleaching powder solution = 8.2ml of 0.2N of Na2S2O3. Take 20ml of bleaching powder solution in a stoppered conical flask and add it to 20ml of 10% KI solution. Delivery of the chlorine solution into the well 5. Burette, titration flask, 100ml graduated cylinder, 250ml measuring flask, weight box, glazed tile, glass wool. Surface Disinfectant: Put on gloves or simply cover your hands with polythene. 5.0 BLEACHING POWDER FOR DISINFECTION Bleaching powder ( CaOCl_, chloride of lime ) is an easily available and cheap chlorine compound. To prepare 1:100 bleach solution add one volume of 1:10 bleach solution (e.g. If it is more concentrated, it contains a concentration 10-15% sodium hypochlorite (with a pH of around 13, it burns and is corrosive). Bleaching Powder water treatment is useful in disinfecting water in places or conditions where boiling method cannot be practiced. Pre-chlorination - for algae or any biological growth control, 2. Bleaching powder is basic in character. Let us have a look at the production of these compounds from common salt: Bleaching powder is synthesized by the action of chlorine gas (produced from the chlor-alkali process) on dry slaked lime (\(Ca (OH)_2\)). of water It is a strong oxidizing agent, hence used as an oxidizer in many industries. – Procedure – 1. A daily average of 1 gallon per man is sufficient for drinking and cooking purposes. 5g of the given sample of bleaching powder and transfer it to a 250ml conical flask. For a bathroom disinfectant, mix equal parts of chlorine powdered bleach in water and pour it into a spray bottle. Get contact details and address | … Find out the volume of water present in the well using the given formulaliters 2.Find the amount of bleaching powder required for disinfection, Using ‘Horrock’s Apparatus’ 3. Similarly, hydrogen peroxide Oxygen bleach works best at warm temperatures so that the powder dissolves. 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