Reactions With Aqueous Ions

Question 1

What does amphoteric mean

Answer 1

Reacts with both acids and bases

Question 2

What is the initial colour of [Cu(H20)6]2+

Answer 2

Blue solution

Question 3

What is the initial colour of [Fe(H20)6]2+

Answer 3

Green solution

Question 4

What is the initial colour of [Fe(H20)6]3+

Answer 4

Purple solution

Question 5

What is the initial colour of [Al(H20)6]3+

Answer 5

Colourless solution

Question 6

When you add OH- and NH3 to [Cu(H20)6]2+ and [Fe(H20)6]2+ what is formed

Answer 6

Cu 2+ - Blue ppt
Fe 2+ - Green ppt

Question 7

When you add OH- and NH3 to [Fe(H20)6]3+ what is formed

Answer 7

Goes from purple soln. -> Brown ppt

Question 8

When you add OH- and NH3 to [Al(H20)6]3+ what is formed

Answer 8

Goes from colourless soln. -> white ppt

Question 9

What type of reaction is it when you add ammonia

Answer 9

Acid base reaction

Question 10

What extra product is formed when you add NH3

Answer 10

NH4+ (aq)

Question 11

What extra product is formed when you add OH-

Answer 11

H20 (I)

Question 12

What compound is amphoteric

Answer 12

Al(H20)3(OH)3

Question 13

What type of reaction is it when you add a carbonate CO3(2-)

Answer 13

Precipitation reaction

Question 14

When you add CO3 (2-) to [Cu(H20)6]2+ and [Fe(H20)6]2+ what is formed

Answer 14

Cu 2+ - blue/green ppt
Fe 2+ - green ppt

Question 15

When you add excess ammonia to Cu 1. what does the NH3 act as
2. What type of reaction is it

Answer 15

1. A Lewis base
2. Incomplete ligand substitution

Question 16

What is the colour change when you add excess OH/H+ to Al

Answer 16

White ppt to colourless solution

Question 17

When you add CO3 (2-) to [Fe(H20)6]3+ and [Al(H20)6]3+ what is formed and observation

Answer 17

Fe 3+ - brown ppt
Al 3+ - white ppt

Bubbling