Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

A-level Chemisty AQA > Metal Aqua Ions > Flashcards

Metal Aqua Ions Flashcards

1
Q

What colour is [Fe(H2O)6]2+

A

Green

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What colour is [Cu(H2O)6]2+

A

Blue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What colour is [Al(H2O)6]3+

A

Colourless

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What colour is [Fe(H2O)6]3+

A

Yellow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are metal salts typically represented as?

A

Anhydrous ionic solids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the definition for a brønsted lowery acid?

A

Proton donor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the definition for a brønsted lowery base?

A

Proton acceptor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are metal aqua ion complexes also known as?

A

Weak acids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Why are 3+ metal aqua ions more acidic than 2+?

A

Water breaks down to become a H+ donor. This happens more in 3+ aqua ions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the general equation for 2+ complexes when added to water?

A

[metal(water)6]2+ + water —> [metal(water) 5 (OH)]+ + H3O+

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the general equation for 2+ complexes when added to water?

A

[metal(water)6]3+ + water —> [metal(water) 5 (OH)]2+ + H3O+

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

State the chemical chain of reactions when sodium hydroxide is added to [Al(H2O)6]3+ drop wise, in excess and standing in air….

A

Drop wise: colourless solution to white ppt
Excess: white ppt to colourless solution
In air: no change

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

State the chemical chain of reactions when sodium hydroxide is added to [Fe(H2O)6]3+ drop wise, in excess and standing in air….

A

Drop wise: yellow solution to brown ppt
Excess: no change
In air: no change

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

State the chemical chain of reactions when sodium hydroxide is added to [Cu(H2O)6]2+drop wise, in excess and standing in air….

A

Drop wise: blue solution to blue ppt
Excess no change
In air: no change

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

State the chemical chain of reactions when sodium hydroxide is added to [Fe(H2O)6]2+drop wise, in excess and standing in air….

A

Drop wise: green solution to green ppt
Excess no change
In air green ppt oxidises to brown ppt

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the general equation for 2+ complexes when sodium hydroxide is added?

A

[Metal(water)6]2+ (aq) + 2OH- —-> M(H2O)4(OH)2 (s) + 2 water

17
Q

What is the general equation for 3+complexes when sodium hydroxide is added?

A

[Metal(water)6]3+ (aq) + 3OH- —-> M(H2O)3(OH)3 (s) + 3 water

18
Q

What can be added to reverse the reaction between metal aqua ions with sodium hydroxide?

A

Hydrochloric acid

19
Q

How do metal hydroxides precipitates act?

A

As bases

20
Q

What does amphoteric mean?

A

Reacts with both acids and alkalis

21
Q

Give 2 examples of transition metals that are amphoteric

A

Al3+

Cr3+

22
Q

Give the general equation equation for metal aqua ion reactions with ammonia solution

A

[metal(water)6]2+/3+ + 2/3NH3 —> M(H2O)3/4(OH)2/3 + 2/3 NH4+

23
Q

When ammonia is added to metal aqua ions what does it act as?

A

Brønsted lowery base

24
Q

Give the formula of the anode complex when an excess/ conc ammonia is added to copper hexa aqua ion

A

[copper(NH3)4(H2O)2]2+

25
Q

Give the colour changes when dilute ammonia is added drop wise, in excess and on standing in air to aluminium hexa aqua ion

A

Drop wise colourless to white ppt
Excess no further change
Standing no further change

26
Q

Give the colour changes when dilute ammonia is added drop wise, in excess and on standing in air to iron (iii) hexa aqua ion

A

Drop wise yellow solution to brown ppt

Excess and standing have no further change

27
Q

Give the colour changes when dilute ammonia is added drop wise, in excess and on standing in air to copper hexa aqua ion

A

Drop wise blue solution to blue ppt
Excess light blue ppt to deep blue ppt
In air no further change

28
Q

Give the colour changes when dilute ammonia is added drop wise, in excess and on standing in air to iron (Ii) hexa aqua ion

A

Drop wise green solution to green ppt
Excess no change
In air brown ppt

29
Q

Give the general equation for the reaction of a 2+ metal aqua ion with sodium carbonate

A

[M(H2O)6]2+ + CO3- —> MCO3 + 6 water

A-level Chemisty AQA (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions