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colours and products of Fe2+ (aq) and Fe3+ (aq) ions reactions

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Total cards: 14•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (14)

#1
Front (Question)

what product is formed and what colour is the product when… [Fe (H2O)6] 2+ is reacted with NaOH

Back (Answer)

Fe (H20)4 (OH)2 (s) green solution —> green ppt —> turns brown when standing in air

#2
Front (Question)

what is the colour of [Fe (H2O)6] 2+

Back (Answer)

green solution

#3
Front (Question)

what product is formed and what colour is the product when… [Fe (H2O)6] 2+ is reacted with excess NaOH

Back (Answer)

Fe (H20)4 (OH)2 (s) green solution —> green ppt —> turns brown when standing in air NO FURTHER CHANGE

#4
Front (Question)

what product is formed and what colour is the product when… [Fe (H2O)6] 2+ is reacted with NH3

Back (Answer)

Fe (H2O)4 (OH)2 (s) green solution —> green ppt —> turns brown when standing in air

#5
Front (Question)

what product is formed and what colour is the product when… [Fe (H2O)6] 2+ is reacted with excess NH3

Back (Answer)

Fe (H2O)4 (OH)2 (s) green solution —> green ppt —> turns brown when standing in air NO FURTHER CHANGE

#6
Front (Question)

what product is formed and what colour is the product when… [Fe (H2O)6] 2+ is reacted with Na2CO3 (aq)

Back (Answer)

FeCO3 (s) green solution —> green ppt

#7
Front (Question)

what is the colour of [Fe (H2O)6] 3+

Back (Answer)

purple solution (may look yellow- brown ppt due to some [Fe (H2O)5 (OH)]2+ (aq)

#8
Front (Question)

what product is formed and what colour is the product when… [Fe (H2O)6] 3+ is reacted with NaOH

Back (Answer)

Fe (H2O)3 (OH)3 (s) purple solution —> brown ppt (ppt may look orange- brown)

#9
Front (Question)

what product is formed and what colour is the product when… [Fe (H2O)6] 3+ is reacted with excess NaOH

Back (Answer)

Fe (H2O)3 (OH)3 (s) purple solution —> brown ppt (ppt may look orange- brown) NO FURTHER CHANGE

#10
Front (Question)

what product is formed and what colour is the product when… [Fe (H2O)6] 3+ is reacted with NH3

Back (Answer)

Fe (H2O)3 (OH)3 (s) purple solution —> brown ppt (ppt may look orange- brown)

#11
Front (Question)

what product is formed and what colour is the product when… [Fe (H2O)6] 3+ is reacted with excess NH3

Back (Answer)

Fe (H2O)3 (OH)3 (s) purple solution —> brown ppt (ppt may look orange- brown) NO FURTHER CHANGE

#12
Front (Question)

what product is formed and what colour is the product when… [Fe (H2O)6] 3+ is reacted with Na2CO3 (aq)

Back (Answer)

Fe (H2O)3 (OH)3 (s) purple solution —> brown ppt (ppt may look orange- brown) and CO2 gas evolved so effervescence

#13
Front (Question)

-what is the product [Fe (H2O)6] 2+ formed when is oxidised • what is the oxidising agent

Back (Answer)

[Fe (H2O)6] 3+ oxidising agent is KMnO4 or H2O2

#14
Front (Question)

-what is the product [Fe (H2O)6] 3+ formed when is reduced • what is the reducing agent

Back (Answer)

[Fe (H2O)6] 2+ reducing agent is Zinc (Zn)