Inorganic- Chlorine and Chlorate 0.0 / 5 ? ChemistryEnergeticsA2/A-levelAQA Created by: HindleycCreated on: 16-06-18 18:10 Disproportionation name for a reaction where an element is simultaneously oxidised and reduced 1 of 18 Chlorine and water? Cl2(g)+H2O(l)=HClO(aq)+HCl(aq) 2 of 18 What is happening? Chlorine is both simultaneously oxidising and reducing 3 of 18 What happens if universal indicator is added to solution? First turn red due to acidity of both reaction products. will then turn colourless as the HClO bleaches the colour 4 of 18 Reaction of chlorine with water in sunlight? If the chlorine's bubbled through water in presence of bright sunlight a different reaction occurs- 2Cl2+2H2O=4H+ +4Cl-+O2 5 of 18 When does same reaction occur? To equilibrium mixture of chlorine water- greenish colour of chlorine water fades as Cl2 react and a colourless gas CO2 is produced 6 of 18 What is the greenish colour of these solutions due to? Cl2 7 of 18 What is Chlorine used in Water treatment to kill bacteria- used to treat drinking water and the water in swimming pools 8 of 18 Why is it used? The benefits to health of water treatment by chlorine outweighs its toxic effect 9 of 18 What will Cl2 ( and Br2 and I2) in aqueous solution react with? What will happen? Cold sodium hydroxide. Colour os halogen solution will fade to colourless 10 of 18 eqn? Cl2(aq)+2NaOH(aq)=NaCl(aq)+NaClO(aq)+H2O(l) 11 of 18 What is the mixture of NaCl and NaClO used as? what for? Bleach to disinfect/kill bacteria 12 of 18 What are the various forms of sulphur and chlorine compounds where oxygen is combined called? Sulphates and Chlorates 13 of 18 What do they have on their name? Relevant oxidation numbers given in Roman numerals (remember to *** oxidation no. when naming compounds 14 of 18 NaClO Sodium Chlorate (I) 15 of 18 NaClO3 Sodium Chlorate (V) 16 of 18 K2SO4? Potassium Sulfate(VI) 17 of 18 K2SO3? Potassium Sulfate (IV) 18 of 18
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