Brainscape's Knowledge GenomeTM

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


See full index

Chemistry > Coordination Compounds Uses > Flashcards

Coordination Compounds Uses Flashcards

1
Q

What forms the basis for detecting and estimating metal ions in qualitative and quantitative analysis?

A

The formation of coordination entities due to reactions between metal ions and ligands.

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

Name some examples of ligands commonly used in coordination compounds for chemical analysis.

A

EDTA, DMG (dimethylglyoxime), α–nitroso–β–naphthol, and cupron.

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

What type of ligands are particularly useful for the detection of metal ions?

A

Chelating ligands.

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

What is EDTA commonly used for in coordination chemistry?

A

EDTA is used as a reagent in both qualitative and quantitative analysis to detect and estimate metal ions.

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

Why do coordination compounds exhibit characteristic color reactions?

A

The formation of coordination entities between metal ions and ligands leads to characteristic color changes.

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

What is the full form of DMG, and what is it used for in coordination chemistry?

A

DMG stands for dimethylglyoxime. It is used as a reagent to detect specific metal ions, such as nickel.

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

What is the role of α-nitroso-β-naphthol in chemical analysis?

A

α-nitroso-β-naphthol acts as a ligand to form coordination compounds with metal ions, aiding in their detection and analysis.

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

What is meant by chelating ligands?

A

Chelating ligands are ligands that can form multiple bonds with a single metal ion, creating stable ring-like coordination entities.

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

What is a coordination entity in the context of chemical analysis?

A

A coordination entity is a complex formed when a central metal ion is surrounded by a set of ligands bonded through coordination bonds.

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

What is the significance of cupron in coordination chemistry?

A

Cupron is used as a ligand to detect and estimate metal ions through the formation of colored coordination compounds.

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

Front:
How is the hardness of water commonly estimated?

A

Back:
The hardness of water is estimated by simple titration with Na2EDTA

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

Front:
Which ions in water form stable complexes with EDTA?

A

Back:
Ca²⁺ (calcium) and Mg²⁺ (magnesium) ions form stable complexes with EDTA.

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

What allows for the selective estimation of calcium and magnesium ions in water hardness testing?

A

Back:
The difference in the stability constants of the calcium and magnesium complexes allows for their selective estimation.

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

Why is Na2EDTA used in the titration method for determining water hardness?

A

ack:
Na2EDTA forms stable complexes with calcium and magnesium ions, making it ideal for titration and estimating their concentration in water.

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

What is the role of stability constants in the estimation of calcium and magnesium ions?

A

Back:
The difference in stability constants of the calcium and magnesium complexes helps distinguish between the two ions during titration.

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

How are metals like gold and silver extracted through complex formation?

A

Gold and silver can be extracted through complex formation, where the metal ions form complexes with ligands, facilitating their separation from ores.

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

What complex does gold form during extraction using cyanide?

A

Gold forms the coordination entity [Au(CN)₂]⁻ in aqueous solution when combined with cyanide in the presence of oxygen and water.

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

What role does cyanide play in the extraction of gold?

A

Back:
Cyanide forms a stable complex with gold ions, aiding in their dissolution and making it easier to separate gold from its ore.

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

How can gold be separated from its cyanide complex?

A

Gold can be separated in metallic form from the cyanide solution by adding zinc, which reduces the gold back to its metallic state.

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

What happens when zinc is added to the gold-cyanide solution during extraction?

A

Zinc reduces the gold from its complex, precipitating the gold as a solid metal.

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

What is the coordination entity formed when gold reacts with cyanide?

A

Back:
The coordination entity formed is [Au(CN)₂]⁻.

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

How can metals be purified using coordination compounds?

A

Metals can be purified by first forming coordination compounds with them, and then decomposing the complex to yield the pure metal.

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

Front:
What is an example of a metal that can be purified through coordination compound formation?

A

Back:
An example is nickel, which can be purified by forming [Ni(CO)₄] and then decomposing it.

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

What is the coordination compound formed during the purification of impure nickel?

A

Back:
The coordination compound formed is [Ni(CO)₄] (nickel carbonyl).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

How is pure nickel obtained from its coordination compound [Ni(CO)₄]?

A

[Ni(CO)₄] is decomposed to yield pure nickel metal.

26
Q

Why is nickel converted to [Ni(CO)₄] in the purification process?

A

Back:
Nickel is converted to [Ni(CO)₄] to separate it from impurities and then decompose the compound to obtain the pure metal.

27
Q

How are coordination compounds important in biological systems?

A

Back:
Coordination compounds play a key role in biological systems, such as in enzymes, pigments, and other essential molecules that involve metal ions.

28
Q

What is the coordination compound responsible for photosynthesis?

A

Back:
The pigment chlorophyll, responsible for photosynthesis, is a coordination compound of magnesium.

29
Q

What is haemoglobin, and how is it related to coordination chemistry?

A

Back:
Haemoglobin is the red pigment in blood that acts as an oxygen carrier, and it is a coordination compound of iron.

30
Q

Which coordination compound is important for treating pernicious anaemia?

A

Back:
Vitamin B12 (cyanocobalamin), which is a coordination compound of cobalt, is important in the treatment of pernicious anaemia.

31
Q

What role do coordination compounds play in enzymes like carboxypeptidase and carbonic anhydrase?

A

Carboxypeptidase A and carbonic anhydrase are enzymes that function as biological catalysts, and their activity relies on coordinated metal ion

32
Q

Which metal ion is found in chlorophyll, the pigment responsible for photosynthesis?

A

Back:
Magnesium (Mg²⁺) is the metal ion in chlorophyll

33
Q

What metal ion is central to the coordination complex of haemoglobin?

A

Back:
Iron (Fe²⁺ or Fe³⁺) is central to the coordination complex of haemoglobin

34
Q

What is the role of cobalt in Vitamin B12?

A

Cobalt is the central metal ion in Vitamin B12 (cyanocobalamin), which plays a key role in preventing pernicious anaemia.

35
Q

How are coordination compounds used as catalysts in industrial processes?

A

Coordination compounds are used as catalysts to speed up chemical reactions, such as in the hydrogenation of alkenes or electroplating processes.

36
Q

What is the Wilkinson catalyst, and what is its role in industrial chemistry?

A

Back:
The Wilkinson catalyst, [(Ph₃P)₃RhCl], is a rhodium complex used as a catalyst for the hydrogenation of alkenes

37
Q

Front:
How does the Wilkinson catalyst facilitate the hydrogenation of alkenes?

A

Back:
The Wilkinson catalyst facilitates the hydrogenation of alkenes by promoting the addition of hydrogen to the double bond in alkenes

38
Q

Why are complexes like [Ag(CN)₂]⁻ and [Au(CN)₂]⁻ used in electroplating?

A

Back:
These complexes are used in electroplating because they allow for smoother and more even deposition of silver and gold than simple metal ions.

39
Q

What is the benefit of using [Ag(CN)₂]⁻ and [Au(CN)₂]⁻ complexes for electroplating?

A

Back:
The complexes result in a more uniform and smooth layer of metal being electroplated onto articles compared to using simple metal ion

40
Q

What metal is used in the Wilkinson catalyst for hydrogenation reactions?

A

Back:
Rhodium (Rh) is the metal used in the Wilkinson catalys

41
Q

What role do coordination compounds play in black and white photography?

A

Back:
Coordination compounds are used in the fixing process to dissolve undecomposed silver bromide (AgBr) and form a complex ion, allowing for the permanent development of the image

42
Q

What is the complex ion formed during the fixing process in black and white photography?

A

Back:
The complex ion formed is [Ag(S₂O₃)₂]³⁻, where silver ions are coordinated with thiosulfate ion

43
Q

What is the function of the hypo solution in the photographic development process?

A

Back:
The hypo solution, which contains sodium thiosulfate (Na₂S₂O₃), dissolves undecomposed silver bromide (AgBr) from the film and forms a soluble coordination complex.

44
Q

Why is the [Ag(S₂O₃)₂]³⁻ complex ion important in black and white photography?

A

Back:
The [Ag(S₂O₃)₂]³⁻ complex makes the silver bromide (AgBr) soluble, allowing it to be washed away, thus fixing the developed image on the film

45
Q

What is silver bromide (AgBr), and why is it important in photography?

A

Back:
Silver bromide (AgBr) is a light-sensitive compound used in photographic films and papers, where it reacts to light during exposure to form an imag

46
Q

What is the role of sodium thiosulfate (Na₂S₂O₃) in the fixing process?

A

Sodium thiosulfate (Na₂S₂O₃) acts as a ligand, binding to silver ions in the undecomposed AgBr and forming the complex [Ag(S₂O₃)₂]³⁻, which is soluble and can be washed away

47
Q

What is chelate therapy, and how is it used in medicinal chemistry?

A

Back:
Chelate therapy involves the use of chelating agents to form coordination complexes with metals, helping to remove toxic metal ions from plant and animal systems or treat metal poisoning

48
Q

Front:
Which chelating agents are used to remove excess copper and iron from the body?

A

Back:
D-penicillamine and desferrioxamine B are used to remove excess copper and iron by forming coordination compounds with these metals

49
Q

What role do coordination compounds of platinum play in medicine?

A

Coordination compounds of platinum, such as cis-platin, are used as chemotherapy agents because they effectively inhibit the growth of tumors.

50
Q

What is cis-platin, and why is it important in cancer treatment?

A

Cis-platin is a platinum-based coordination compound used in chemotherapy to treat various cancers by interfering with DNA replication in tumor cells.

51
Q

How does EDTA help in the treatment of lead poisoning?

A

EDTA forms a stable coordination complex with lead ions, allowing for their removal from the body and reducing the toxicity caused by lead poisoning.

52
Q

How do chelating agents like D-penicillamine and desferrioxamine B work to remove toxic metals?

A

Back:
These chelating agents bind to excess metal ions like copper and iron, forming stable coordination complexes that can be excreted from the body, reducing toxicity.

53
Q

stablity of complex refers to

A

degree of association between the 2 species

54
Q

stablity constant=

A

beta

55
Q

beta=

A
56
Q

Beta of Cuprammonioum

A

[cu(NH3)4 +2]/ [Cu+2][NH3]

57
Q

instablity constant or dissociation constant [K] of coordination compound is=

A

Reciprocal of formation constant [Beta]

58
Q

K=

A

1/[beta]

59
Q

Beta 4 for complex is 2.1 x 10^13 overall complex dissociation equilibrium constant for
Cu(NH3)4 2+

A

4.76x10^-14

60
Q

carbonyl compounds

A
61
Q
A
62
Q
A

Chemistry (10 decks)

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