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AS Chemistry PRACTICAL 33

Ahmad Zaeem

Ahmad Zaeem

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Guys check out oct/nov 2011 P34 qs 1 ....its really good ....you should solve this paper before going
 
Sweetnsilly

Sweetnsilly

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Can anybody PLEASE help me with the order of reagents that they usually ask in the cation anion test?
i have no idea which reagent is to be used after what and which order would give incorrect result
eg.reagent 1: to identify any carbonate ion present
reagent 2: to identify any chloide ions present
now i know the answers but can someone actually explain the logic behind the order and all?
Any guidance regarding this would be highly sppreciated :)
 
S

sufyanalizaib

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normally they ask to draw two straight lines that intersect in enthalpy......wha reeally do these lines show ........:/
 
salvatore

salvatore

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Guys.. I need some help.

Lead(II) and aluminium ions show the same results when tested with ammonia and sodium hydroxide. How can I distinguish between the two ions?
 
S

sufyanalizaib

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add HCl if insoluble than pb
ion is presnt otherwise Al ion ..........also potassium dichromate gives bright yellow ppt with pb
 
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