Bachelor’s Degree Programme (BSCG) – CHEMICAL ENERGETICS, EQUILIBRIA AND FUNCTIONAL ORGANIC CHEMISTRY-I Solved Assignment Answer | BCHCT 133 | 2021-2022

Free BCHCT 133 Solved Assignment Answer | CHEMICAL ENERGETICS, EQUILIBRIA AND FUNCTIONAL ORGANIC CHEMISTRY-I | For July 2021 – June 2022

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BCHCT 133 CHEMICAL ENERGETICS, EQUILIBRIA AND FUNCTIONAL ORGANIC CHEMISTRY-I Solved Assignment 2021-2022

IGNOU BCHCT-133 CHEMICAL ENERGETICS, EQUILIBRIA AND FUNCTIONAL ORGANIC CHEMISTRY-I assignment are 100 marks. There are two sections – A and B. Students have to answer all the questions. Download IGNOU BCHCT-133 Assignment free without any registration, Students can easily download the IGNOU assignment question paper from the official website of the university. They are not required to pay any fees or charges for this.

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The answer of BCHCT-133 | CHEMICAL ENERGETICS, EQUILIBRIA AND FUNCTIONAL ORGANIC CHEMISTRY-I | Solved Assignment 2021-2022:

Note: Attempt all questions. The marks for each question are indicated against it.

Part A: CHEMICAL ENERGETICS AND EQUILIBRIA

1. a) Define chemical thermodynamics and outline its significance.
b) Explain different types of thermodynamic systems with suitable examples.
c) Derive an expression for isothermal reversible expansion of a gas from a volume V₁ to V₂.

2. a) Describe the method for experimental determination of energy changes accompanying chemical reactions under constant volume conditions.
b) Explain the significance of rU and rH and derive the relationship between them.
c) Predict the enthalpy of hydrogenation of 1-propene using the bond enthalpy data from Table 3.2 of (Unit 3; p, 76).

3. a) Define the spontaneity of a reaction and give the criteria of the spontaneity of reactions in terms of i) entropy and ii) Gibbs energy.
b) Derive an expression for the entropy change for isothermal Mixing of Ideal Gases.
c) Define equilibrium constant and for the following reaction:
2NH3(g) ⇌ 2N2(g) +3H2 (g)
i. Write the expression for Kc.
ii. Relate Kc to Kp, and
iii. Relate Kc to Kx

4. a) Define the degree of ionization of a weak electrolyte and list the factors affecting it.
b) What are amphoteric substances? Explain with the help of suitable examples.
c) State Le- Chatelier’s principle and for the following reaction at equilibrium:
2SO2(g) + O2(g) ⇌ 2SO3(g) ∆H = 198 kJ
Predict the effect of
i. Adding SO2(g) at equilibrium
ii. Decreasing the temperature
iii. Reducing the volume of the container to half
iv. Adding an inert gas under conditions of constant pressure.

5. a) Define solubility and give the relationship between solubility and solubility product constant for sparingly soluble salts of AB types.
b) Calculate the degree of ionisation and the pH of a 0.01 M aqueous solution of formic acid at 298K. [Given, Ka (HCOOH) = 1.7  10−4at 298K].
c) Calculate the pH of 0.01 M aqueous solution of sodium formate at 298 K. [Given: Ka (HCOOH) =1.7 × 10−4 at 298K]

Part B: FUNCTIONAL GROUP ORGANIC CHEMISTRY-I

6. Write chemical equation(s) for the following conversions :
i) Phenol to benzene
ii) Ethylbenzene to 1-chloro-1-phenylethane
iii) Aniline to chlorobenzene
iv) Phenol to 4-hydroxybenzaldehyde
v) Anisole to phenol
b) Write the mechanism of the Friedel-Crafts alkylation reactions.

7. a) What do you understand by ortho and para-directing activator? Explain with the help of a suitable example.
b) Write the mechanism of the reaction of allyl chloride with water.

8. Explain the following:
a) Reaction of silver cyanide with bromopropane gives 1-propylisonitile not npropyl cyanide.
b) Ether is the major product in the reaction of tert-butylbromide with ethanol

9. a) Why thionyl chloride is generally used to convert alcohols to alkyl halides? Taking suitable example write the mechanism of the reaction of an alcohol with thionyl chloride.
b) How you will distinguish between aldehydes and ketones?

10. a) Write the mechanism for Knoevenagel condensation.
b) Complete the following reactions:

Wrapped Up

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