| A | B |
|---|
| NaOH (aq) means | sodium hydroxide solution |
| NaOH (aq) + copper sulphate solution gives | blue ppt |
| NaOH (aq) + copper sulphate solution ppt is called | copper hydroxide |
| NaOH (aq) + iron II sulphate solution gives | dull green ppt |
| NaOH (aq) + iron III sulphate solution gives | brown ppt |
| NaOH (aq) + zinc sulphate solution gives | white ppt - it dissolves in excess NaOH |
| NaOH (aq) + KCl(aq) gives | no ppt |
| alkali metal compounds + NaOH (aq) give no ppt because | all alkali metal compounds are soluble |
| Nickel sulphate + NaOH (aq) gives ...........ppt | bright green |
| In flame test wire is first cleaned with | concentrated HCl |
| In the flame test the wire is made of | nichrome ( it has a high mpt) |
| KCl + flame test | lilac flame |
| CuSO4 + flame test | blue green |
| CaCl2+ flame test | orange red flame (brick red) |
| LiCl+ flame test | crimson flame |
| NaCl + flame test | yellow flame |
| MgCl2 + flame test | no colour to flame |
| brown ppt with NaOH but no flame colour | iron III compound |
| dull green ppt with NaOH but no flame colour | iron II compound |
| blue ppt with NaOH but green blue flame colour | copper compound |
| white ppt with NaOH but no flame colour | zinc compound |
| white ppt with NaOH but pale green flame colour | barium compound |
| grey ppt with NaOH | transition metal like chromium |
| no ppt with NaOH | probably group 1 metal compound |
| no ppt with NaOH but lilac flame | potassium compound |
| no ppt with NaOH but crimson (red) flame | lithium compound |
| no ppt with NaOH but yellow flame | sodium compound |
| NaOH(aq) + iron II sulphate solution ppt is called | iron II hydroxide |
| NaOH(aq) + iron III sulphate solution ppt is called | iron III hydroxide |
| Generally coloured compounds contain | transition metals |
