reactions of aqueous transition metal ions Flashcards
what metal aqua ions are formed with Fe2+ and Cu2+
they form (M(H2O)6)2+
what metal aqua ions are formed with Al3+ and Fe3+
they form (M(H2O)6)3+
why are the 3+ complex aqua ions more acidic than the 2+ ones
the higher charged ions will attract the negative oxygen in H2O which will weaken the O-H bond in water which will mean the H+ ion is more easily released making it more acidic.
how do the the metal aqua ions react as. show the reactions with NaOH
they react as acids
the OH- charge will substitute 2 H2Os if its a 2+ complex and 3 H2Os if its a 3+ complex
what is special about the aluminium ion (Al(H2O)3(OH)3) and how do they react with acidic and basic ions
can act as a base and an acid if reacts with H3O+ forms (Al(H2O)6)3+
if with OH- forms (Al(H2O)2(OH)4)-
what are the reactions of the metal aqua ions with NH3
they react the same with OH- however they form the ammonium salt for however many H2Os are replaced
e.g (Al(H2O)6)3+ + 3NH3 forms (Al(H2O)3(OH3) +3NH4+
what is different about the copper OH H2O salt with an excess of ammonia
forms a deep blue solution with 2H2O AND 2OH- and (Cu(H2O)2(NH3)4)2+
how do the metal 2+ ions react with carbonate ions
they react as acids which form carbonates and water
e.g (Fe(H2O)6)2+ +CO3^2- Forms FeCO3 + 6H2O
how do the 3+ ions react carbonates
2(M(H2O)6)3+ reacts with 3 carbonate ions to form 2(M(H2O)3(OH)3) + 3H2O and 3CO2
how do the meta aqua ions react with 4Cl- ions
they form (MCl4)2- and 6H2O
