Importance And Applications Of Coordination Compounds

(Ti⁺³(H₂​O)_6​)³⁺
Ti⁺³:3d¹
C.F.S.E. =−0.4×Δ_0​






=480nm
So , the correct answer is 480.

Given the reaction of N,N-dimethylaniline ('A') with NaNO2 and HX to form 'B', the correct statements are:
(1) The electrophile involved in the reaction is NO+.
(3) The reaction occurs at low temperature.
(4) The product 'B' formed in the above reaction is p-nitroso compound at low temperature.
Explanation:
* The reaction is a diazotization reaction specific to tertiary aromatic amines.

* NaNO2 and HX generate the nitrosonium ion (NO+), which is the electrophile.

* Diazotization reactions are performed at low temperatures to prevent decomposition of intermediates.

* The product formed is a p-nitroso compound due to electrophilic aromatic substitution at the para position.
Statement (2) is incorrect because the product is a p-nitroso compound, not an N-nitroso ammonium compound.

Column Adsorption and Elution Analysis

Key Factors:

• Adsorption of compound α is proportional to:
• The order of polarity determines the retention time.
• The time spent in the column is inversely proportional to the order in which the compounds come out of the column:

Conclusion:

• Order of polarity:

a > b > c

• Order of elution (come out from the column):

c > b > a

• Time spent in the column:

a > b > c

The incorrect statements are A, B, and C Only.

Step 1: Role of Coordination Compounds of Platinum
- Platinum-based coordination compounds, such as Cisplatin ( ), are widely used in chemotherapy.
- These compounds inhibit tumour growth by binding to DNA and interfering with the replication process.
Step 2: Analysis of the Options
Option A (EDTA): EDTA is primarily a chelating agent used for metal ion sequestration, not for tumour treatment.
Option B (Coordination Compounds of Pt): Correct, as platinum-based compounds are effective in tumour inhibition.
Option C (D -- Penicillamine): Penicillamine is used in chelation therapy for heavy metal poisoning, not for tumours.
Option D (Cisplatin): Correct, as it is a well-known platinum-based anti-cancer drug.
Conclusion: The correct combination is B and D. Therefore, the correct answer is (1) B and D Only.

Given Data:

• Compound P is neutral.
• Residue Q gives effervescence with NaHCO₃, suggesting the presence of a carboxylic acid group (-COOH).
• Filtrate gives oily liquid R, which reacts with Hinsberg’s reagent to give a solid soluble in NaOH, indicating the presence of a primary amine (-NH₂).
• Molecular formula of P: C₁₄H₁₃ON.

Analysis:

• Compound P must be a neutral amide because it is neutral and contains both oxygen and nitrogen in its molecular formula.
• Upon hydrolysis with HCl, the amide breaks down to give:
  • Residue Q: A carboxylic acid (gives effervescence with NaHCO₃).
  • Filtrate R: A primary amine (reacts with Hinsberg’s reagent to form a solid soluble in NaOH).

Correct Option:

The correct compound P is Option (4):

• Structure of Option (2) corresponds to the amide with a molecular formula of C₁₄H₁₃ON.
• Upon hydrolysis, it produces a carboxylic acid (Q) and a primary amine (R), satisfying all the given conditions.

Conclusion: The correct answer is Option 2.

Correct statements for the given reaction are: 

Compound A (cyclo butenedione with two hydroxyl groups) reacting with 2 equivalents of OH- to form compound B]

A. Compound 'B' is aromatic. 

B. The completion of the above reaction is very slow. 

C. 'A' shows tautomerism. 

D. The bond lengths C-C in compound B are found to be the same. Choose the correct answer from the options given below:

Analysis of Compound D:

The structure of compound D is:

(I)2-H5C2O-C6H2-CH2CH(NHCOCH3)COOEt

Let's count the atoms:

• C: 19
• H: 19
• N: 1
• O: 4
• I: 2

Comparing this to the given formula C19H19NO4Ix, we find that x = 2.

Therefore, the value of x is 2.