Презентация «Uses of chlorine and its compounds»

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Презентация «Uses of chlorine and its compounds»

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Uses of chlorine and its compounds 11. 4B - Group 17 (The Halogens)
Uses of chlorine and its compounds 11. 4B - Group 17 (The Halogens)
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Learning objectives 11. 2. 1. 12 know how chlorine water is formed and the reactions of chlorine wit
Learning objectives 11. 2. 1. 12 know how chlorine water is formed and the reactions of chlorine with aqueous sodium hydroxide 11. 2. 1. 13 understand the use of chlorine as a water treatment and …
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Success criteria - justifies the use of chlorine for water purification (drinking water, pool water)
Success criteria - justifies the use of chlorine for water purification (drinking water, pool water) - considers the formation of substances with chlorinated water and their effect on humans - …
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Disproportionation The element chlorine (Cl2, oxidation number=0) undergoes a type of redox reaction
Disproportionation The element chlorine (Cl2, oxidation number=0) undergoes a type of redox reaction called disproportionation when it reacts with alkali. Disproportionation can be thought of as a …
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Chlorine in cold alkali (15 °C) Chlorine in cold alkali (15 °C) Cl2(aq) + 2NaOH(aq) → NaCl(aq) + NaC
Chlorine in cold alkali (15 °C) Chlorine in cold alkali (15 °C) Cl2(aq) + 2NaOH(aq) → NaCl(aq) + NaClO(aq) + H2O(l) sodium chlorate(I) The ionic equation for the reaction is: Cl2(aq) + 2OH−(aq) → …
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Chlorine in hot alkali (70 °C) When we add chlorine and hot concentrated aqueous sodium hydroxide a
Chlorine in hot alkali (70 °C) When we add chlorine and hot concentrated aqueous sodium hydroxide a different disproportionation reaction takes place:
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Uses of the halogens and their compounds Chlorination of water Adding a small amount of chlorine to
Uses of the halogens and their compounds Chlorination of water Adding a small amount of chlorine to a water supply will kill bacteria and make the water safer to drink. The chlorine undergoes …
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Bleach Bleach Bleach is an equal mixture of sodium chloride (NaCl) and sodium chlorate(I) (NaClO), m
Bleach Bleach Bleach is an equal mixture of sodium chloride (NaCl) and sodium chlorate(I) (NaClO), made from chlorine and cold alkali. It ‘bleaches’ colours and stains because oxygen atoms from the …


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