Qualitative Testing

Description

This mind map shows the result of chemical reactions that are used to identify if something is present in a substance.
Victoria Mahon
Mind Map by Victoria Mahon, updated more than 1 year ago
Victoria Mahon
Created by Victoria Mahon over 9 years ago
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Resource summary

Qualitative Testing
  1. carbon dioxide
    1. white precipitate when a gas is bubbled through it
      1. lime water
    2. chloride ion
      1. bromide ion
        1. iodine ion
          1. yellow precipitate insoluble in concentrated ammonia
          2. cream precipitate redissolves in concentrated ammonia
            1. Silver nitrate acidic+ammonia solution
          3. white precipitate redissolves in dilute ammonia
          4. calcium or magnesium ions
            1. alimunium ion
              1. copper cu2+
                1. iron Fe3+
                  1. Fe2+
                    1. pale green precipitate eventually goes brown/orange
                      1. Sodium hydroxide solution
                    2. brown precipitate
                    3. blue precipitate
                    4. white precipitate redissolves in excess sodium hydroxide
                  2. flame test using nichrome wire with nitric acid
                    1. brick red
                      1. calcium
                      2. crimson
                        1. lithium
                        2. lilac
                          1. potassium
                          2. green
                            1. Barium
                            2. yellow/orange
                              1. sodium
                            3. carboxylic acid
                              1. fruity smell of ester on warming
                                1. alcohol+conc H2SO4
                              2. water
                                1. blue to pink
                                  1. cobalt chloride solid or paper
                                  2. white to blue
                                    1. copper sulphate
                                  3. alcohol
                                    1. fruity smell of an ester on warming
                                      1. carboxylic acid +conc H2SO4
                                    2. sulphate
                                      1. white precipitate insoluble in acid
                                        1. barium chloride solution followed by a dilute hydroxide
                                      2. carbon to carbon double bonds
                                        1. decolourises
                                          1. bromine water orange/brown
                                        2. carbonate/hydrocarbon
                                          1. effervescence giving out co2
                                            1. hydrochloride, sulphuric or nitric acid
                                          2. hydrogen gas
                                            1. gives a pop
                                              1. burning splint
                                            2. carbon dioxide or nitrogen gas
                                              1. goes out
                                                1. burning splint
                                              2. oxygen
                                                1. relights
                                                  1. glowing splint
                                                2. univeral indicator liquid/paper damp paper placed in a glass
                                                  1. red orange
                                                    1. acid pH 1-4
                                                    2. orange/ yellow
                                                      1. weak acid pH5/6
                                                      2. green
                                                        1. neutral pH7
                                                        2. blue
                                                          1. weak alkali pH 8/9
                                                          2. purple
                                                            1. strong alkali pH10-14
                                                            2. red
                                                              1. SO2 or HCL
                                                              2. blue/purple
                                                                1. ammonia
                                                                2. bleached white
                                                                  1. chlorine CL2
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