With reference to the scheme given, which of the given statement(s) about T, U, V and W is (are) correct?

Wait a moment while we are looking for your question.

.

Engineering

Chemistry

Alkene

Carboxylic Acids

IUPAC Nomenclature of Organic Compound

Question

With reference to the scheme given, which of the given statement(s) about T, U, V and W is (are) correct?

A

Molecular formula of W is C₁₀H₁₈O₄

B

V gives effervescence on treatment with aqueous NaHCO₃

C

T is soluble in hot aqueous NaOH

D

U is optically active

This question involves analyzing a reaction scheme to determine the correctness of statements about compounds T, U, V, and W. Since the image is not visible, I will explain the general concepts typically involved in such schemes, which often include esterification, hydrolysis, and properties of organic compounds.

Key Concepts:

1. Esterification and Hydrolysis: Esters are formed from carboxylic acids and alcohols. Hydrolysis of esters under acidic or basic conditions regenerates the acid and alcohol. For example, the general reaction is:

RCOOH + R^{'} OH \overset{H +}{\leftrightarrow} RCOO R^{'} + H_{2} O

2. Effervescence with NaHCO₃: Carboxylic acids react with sodium bicarbonate to produce carbon dioxide gas, causing effervescence:

RCOOH + NaHCO_{3} \to RCOONa + {CO}_{2} + H_{2} O

3. Solubility in NaOH: Compounds with acidic hydrogens, like phenols or carboxylic acids, are soluble in NaOH due to salt formation.

4. Optical Activity: A compound is optically active if it contains a chiral center and is non-superimposable on its mirror image. This often involves carbon atoms with four different substituents.

5. Molecular Formula Determination: Calculate based on reactants and products; for esters, it involves summing the carbon, hydrogen, and oxygen atoms from the acid and alcohol minus water.

Step-wise Analysis for Such Problems:

Step 1: Identify the starting materials and the reactions in the scheme. Common reactions include ester formation, hydrolysis, or functional group transformations.

Step 2: Determine the structures of T, U, V, W based on the reactions. For instance, if an ester is hydrolyzed, V might be a carboxylic acid, and U might be an alcohol.

Step 3: Check each statement:
- Molecular formula of W: Sum the atoms from the acid and alcohol used in esterification, subtracting H₂O for ester formation.
- Effervescence of V: If V is a carboxylic acid, it will give effervescence with NaHCO₃.
- Solubility of T: If T has an acidic group (e.g., -COOH, -OH), it is soluble in NaOH.
- Optical activity of U: Check if U has a chiral center (asymmetric carbon).

Related Topics and Formulae:

Topics: Esterification, Hydrolysis, Properties of Carboxylic Acids, Optical Activity, Solubility Rules.

Formulae:
- Esterification: Acid + Alcohol → Ester + Water
- Effervescence test: RCOOH + NaHCO₃ → RCOONa + CO₂ + H₂O
- Solubility: Acidic compounds dissolve in base due to salt formation.
- Optical activity: Depends on chirality; a carbon with four different groups is chiral.

Without the specific scheme, ensure to apply these concepts to the given compounds and reactions in the image to verify the statements.