ligands Flashcards
What is the colour change when you react Cu2+ with NaOH?
Pale blue solution to blue gelatinous precipitate
What is the equation when you react Cu2+ with NaOH?
[Cu(H2O)6]2+ (aq) + 2OH- (aq) = [Cu(OH2)(H2O)4] (s) + 2H2O (l)
What is the colour change when you react Cu2+ with a small amount of NH3?
Pale blue solution to blue gelatinous precipitate
What is the equation when you react Cu2+ with a small amount of NH3?
[Cu(H2O)6]2+ (aq) + 2NH3 (aq) = [Cu(OH)2(H2O)4] (s) + 2NH4+ (aq)
What happens when you react Cu2+ with excess NH3?
It redissolves to form a deep blue solution containing [Cu(NH3)4(H2O)2]2+ (aq) ions
What is the colour change when you react Fe2+ with NaOH?
Pale gree solution to green precipitate
What is the equation when you react Fe2+ with NaOH?
[Fe(H2O)6]2+ (aq) + 2OH- (aq) = [Fe(OH)2(H2O)4] (s) + 2H2O (l)
What is the colour change when you react Fe2+ with NH3?
Pale green solution togreen precipitate
What happens when the Fe2+ solution is left standing in air?
It turns a rusty brown colour
What is the equation when you react Fe2+ with NH3?
[Fe(H2O)6]2+ (aq) + 2NH3 (aq) = [Fe(OH)2(H2O)4] (s) + 2NH4+ (aq)
What is the colour change when you react Fe3+ with NaOH?
Pale yellow solution to orange - brown precipitate
What is the equation when you react Fe3+ with NaOH?
[Fe(H2O)6]3+ (aq) + 3OH- (aq) = [Fe(OH)3(H2O)3] (s) + 3H2O (l)
What is the colour change when you react Fe3+ with NH3?
Pale yellow solution to orange - brown precipitate
What is the equation when you react Fe3+ with NH3?
[Fe(H2O)6]3+ (aq) + 3NH3 (aq) = [Fe(OH)3(H2O)3] (s) + 3NH4+ (aq)
What is the colour change when you react Mn2+ with NaOH?
Pale pink solution to pale brown precipitate
What is the equation when you react Mn2+ with NaOH?
[Mn(H2O)6]2+ (aq) + 2OH- (aq) = [Mn(OH)2(H2O)4] (s) + 2H2O (l)
What is the colour change when you react Mn2+ with NH3?
Pale pink solution to pale brown precipitate
What is the equation when you react Mn2+ with NH3?
[Mn(H2O)6]2+ (aq) + 2NH3 (aq) = [Mn(OH)2(H2O)4] (s) + 2NH4+ (aq)
What happens if the precipitate in left standing in the air?
The precipitate oxidises and darkens
What is the colour change when you react Cr3+ with a small amount of NaOH?
Violet solution to green precipitate
What is the equation when you react Cr3+ with a small amount of NaOH?
[Cr(H2O)6]3+ (aq) + 3OH- (aq) = [Cr(OH)3(H2O)3] (s) + 3H2O (l)
What is the colour change when you react Cr3+ with an excess of NaOH?
Green precipitate dissolves forming a dark green solution
What is the equation when you react Cr3+ with an excess of NaOH?
[Cr(OH)3(H2O)3] (s) + 3OH- (aq) = [Cr(OH)6]3- (aq) + 3H2O (l)
What is the colour change when you react Cr3+ with a small amount of NH3?
Violet solution to green precipitate
