Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

A Periodic table, elements and physical chemistry PM 13th June > Chapter 24 Key Concepts > Flashcards

Chapter 24 Key Concepts Flashcards

(62 cards)

Start Studying
1
Q

Properties of the d block elements

A

catalysts

color change

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

uses of Ag Ni Cu Zn

A

coinage

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

uses of iron

A

construction

making tools

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

uses of copper

A

electric cables

water pipes

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

uses of Ti

A

aerospace
joint replacement
cosmetic dentistry

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

what are the two strange d block elements and what is so strange about them

A

Chromium
-should be 3d4 4s2 but it is 3d5 4s1. this is for added stability the half filled d5 shell brings
Copper
- should be 3d9 4s2 but it is 3d10 4s1. this is for added stability that a fully filled d10 sub shell brings

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

what two d block elements are, by definition NOT transition elements

A

Scandium
-only makes Sc 3+. the highest energy level is 3p. d orbital is empty
Zinc
-only makes Zn2+. highest energy level is 3d10. not a partially filled d orbital.

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

characteristics of a transition elements that sets them apart from other entals

A

form colored compounds
their elements and compounds can act as catalysts
they form compounds where the transition element has different ox states

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

Ti oxidation state and colour

A

2
3 pink
4
5

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

V oxidation state and colour

A

2 pink
3 green
4 blue
5 yellow

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

Cr oxidation state and colour

A 
2 blue
3 green
4
5
6 orange
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Mn oxidation state and colour

A 
2 pink
3
4 mauve
5
6 green
7 violet
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Fe oxidation state and colour

A 
2 pale green
3 pale yellow
4
5
6
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Co oxidation state and colour

A

2 pink
3 green
4
5

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

Ni oxidation state and colour

A

2 green
3
4

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

Cu oxidation state and colour

A

1
2 blue
3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what’s the color of K2Cr207

A

bright orange

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

color of Nickle 2 sulfate?

A

green

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

color of hydrated copper sulfate?

A

blue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

whats the transition metal catalyst in the Haber process?

A

Fe

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

whats the transition metal catalyst in the contact process?

A

Valadium as Valadium trioxide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

whats the transition metal catalyst in the hydrogenation of vegetable fats to make margarine?

A

ni

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

whats the transition metal catalyst in the catalytic decomposition of hydrogen peroxide?

A

Manganese as Mn02

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

whats the aq transition metal catalyst in the reaction of Zn with acids

A

Cu2+ aq

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
whats the aq transition metal catalyst in the reaction iodide ions and peroxodisulphate iond S2082-
Fe2+ aq
26
how is a complex ions formed
when one or more molecules or negatively charged ions bind to a central mental ion to make a coordinate bond
27
what color is [Cr(H20)6]3+
blue
28
what color is [Cu(H20)6]2+
blue
29
examples of monodentate ligands
``` H20 NH3 Cl- CN- OH- ```
30
examples of bidentate ligands
``` 1,2-diamoethane (em) ethandioate ion (oxalate ion) 2- ```
31
shape when 6 coordinate complexes?
octahedral . bond angle around the central metal ion is 90 degrees. eg MnSo4 dissolved in water making [Mn(H206)]2+ eg. [Co(H2NCH2CH2NH2)
32
shape when 4 coordinate complexes?
Tetrahedral more common. 109.5. eg [Cu(Cl4)]2- (yellow) and [Co(Cl4)]2- (blue) or square planar only in complex ions of transition metals with 8 d electrons in the highest energy d sub-shell. eg Platinum 2+ Palladium 2+ Gold 3+. eg. [Pt(NH3)4]2+. 90 degrees
33
Two types of steoisomerism that transition metals can show
cis trans | optical
34
cis trans occurs in...
-some square planar with no more than 2 identical ligands attached to the central metal ion eg [Pd(NH3)2Cl2] -octahedral complex ions monodentate 4 or 2 of the other [Co(NH3)4Cl2]2+ bidentate [Co(en)2Cl2]+
35
cis trans AND optical occur in ...
some octahedrals containing two or more bidentate ligands
36
angle of the identical ligands in the trans isomenr
180
37
angle of the idential ligands in the cis isomenr
90
38
what happens when CO binds to haemoglobin
makes carboxyhaemoglobin. when con too high O2 transport prevented and leads to death, ligand sub takes lace, O2 replaced by CO CO binds more strongly than O2, so strong the process is irreversible small CO can prevent a lot of hemoglobin molecules carrying O2
39
Cu ppt reaction with ammonia
1.Cu2+ + 2OH- ---> Cu(OH)2 (s) pale blue to blue ppt 2.[Cu(H20)6]2+ +4NH3--> [Cu(NH3)4(H20)2]2+ +4H20 ppt distolves in excess ammoniua to make to dark blue solution
40
Cr ppt reaction with ammonia
1.Cr3+ + 2OH- ---> Cr(OH)3 (s) violet to grey-green ppt 2.[Cr(H20)6]3+ +6NH3--> [Cr(NH3)6]3+ +6H20 green ppt distolves in excess ammoniua to make to dark purple solution
41
Fe 2+ ppt reaction with ammonia
``` Fe2+ + 2OH- ---> Fe(OH)2 (s) pale green to green ppt. in air Fe(OH)2 ---> Fe(OH)3 orange brown ppt no further reaction with NH3 as these ppt don't dissolve ```
42
Fe 3+ ppt reaction with ammonia
Fe3+ + 2OH- ---> Fe(OH)3 (s) pale yellow to orange-brown ppt no further reaction with NH3 as these ppt dont dissolve
43
Mn ppt reaction with ammonia
Mn2+ + 2OH- ---> Mn(OH)2 (s) pale pink to light brown ppt no further reaction with NH3 as these ppt dont dissolve
44
Cu ppt reaction with aq NaOH
1.Cu2+ + 2OH- ---> Cu(OH)2 (s) pale blue to blue ppt ppt is insoluble in excess NaOH
45
Fe 2+ ppt reaction with aq NaOH
``` Fe2+ + 2OH- ---> Fe(OH)2 (s) pale green to green ppt. in air Fe(OH)2 ---> Fe(OH)3 orange brown ppt ``` ppt is insoluble in excess NaOH
46
Fe 3+ ppt reaction with aq NaOH
Fe3+ + 2OH- ---> Fe(OH)3 (s) pale yellow to orange-brown ppt ppt is insoluble in excess NaOH
47
Mn ppt reaction with aq NaOH
Mn2+ + 2OH- ---> Mn(OH)2 (s) pink to light brown ppt ppt is insoluble in excess NaOH
48
Identifying Carbonate ions
add dilute HNO3 (aq) look for effervescence | H+(aq) + CO32-(aq) ---> CO2(g) + H20(l)
49
eq for Ox Fe2 to Fe3
basis of a redox titration. add MnO4- ions in acid conditions MnO4- (aq) +5Fe2+ (aq) +8H+(aq) => Mn2+ (aq) + 2Fe3+ (aq) + 7H20(l) purple to colourless
50
eq for Red of Fe3 to Fe2
2Fe3+ (aq) + 2I-(aq) --> 2Fe2+(aq) + I2(aq) orange brown pale green brown -colour change obscured by the ox of Iodide ions to make Iodine
51
eq for dicromate (VI) to Cr3+
3Zn(s) +Cr2O72- (aq) +14H+(aq) => 3Zn2+ (aq) + 7H20 + 2Cr3+ (aq) orange to green
52
what do you get when you add hot alkaline hydrogen peroxide to Cr3+ aq? write the full eq
Oxidation of Cr3+ to Cr042- 10OH- + 4H202 + 2Cr3+ => 2Cr042- +8H20 *H202 is a a very strong ox agent
53
what do you get when yu react hot dilute H2SO4 with Cu2O?
water, blue solution of CuSO4 and brown ppt of Cu
54
aq Cu2+ reacts with excess iodide ions. what do you get? and what is the eq
reduction of Cu2+ to Cu+. 2Cu2+ (aq) + 4I(aq) --> 2CuI(aq) + I2(s) pale blue white ppt brown
55
write the further reduction of Cr3+ to Cr2+ in excess Zn
zn(s) +2Cr3+ (aq) => Zn2+ (aq) + 2Cr2+ (aq) | green pale blue
56
what does a more positve e mean?
E value more positve | Eq more likely to gain electrons shift right and undergo reduction
57
what does a more neg e mean?
E value more neg | Eq more likely to lose electrons shift left and undergo oxidation
58
what does a more positive e mean?
E value more positive | Eq more likely to gain electrons shift right and undergo reduction
59
[Cu(H2O)2(NH3)4]2+
Deep blue
60
[Co(NH3)6]2+
Brown yellow solution
61
[CuCl4]2-
Yellow
62
[CoCl4]2-
Blue solution

A Periodic table, elements and physical chemistry PM 13th June (14 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions