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JEE Exam  >  JEE Tests  >  Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) - JEE MCQ

Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) - JEE MCQ


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10 Questions MCQ Test - Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July)

Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) for JEE 2024 is part of JEE preparation. The Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) questions and answers have been prepared according to the JEE exam syllabus.The Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) below.
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Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) - Question 1
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What is the standard-state condition for measuring the free energy of reaction?

Detailed Solution for Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) - Question 1
The standard-state condition for measuring the free energy of reaction includes a partial pressure of 1 atm for gases involved in the reaction. This standardizes the conditions under which free energy changes are calculated.
Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) - Question 2
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What is the relationship between ΔG and the equilibrium constant (K) for a reaction?

Detailed Solution for Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) - Question 2

The relationship between ΔG and the equilibrium constant (K) for a reaction is given by the equation ΔG = ΔG° + RT ln K. This equation relates the free energy change (ΔG) to the standard free energy change (ΔG°) and the equilibrium constant (K).

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Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) - Question 3
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In a reversible reaction, what is the sign of ΔG?

Detailed Solution for Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) - Question 3

In a reversible reaction, ?G is negative in both the forward and backward reactions. This indicates that the free energy of the reaction mixture is lower than the free energy of both the reactants and products.

Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) - Question 4
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What is the equation for calculating the change in Gibbs free energy (ΔG) when there is no phase change in the reaction?
Detailed Solution for Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) - Question 4

The equation for calculating the change in Gibbs free energy (ΔG) when there is no phase change in the reaction is ΔG = ΔH - TΔS, as mentioned in the provided text. This equation considers the enthalpy (ΔH) and entropy (ΔS) of the system.

Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) - Question 5
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What does a negative value of ΔG° indicate for a reaction with respect to its equilibrium constant (K)?
Detailed Solution for Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) - Question 5

A negative value of ΔG° indicates that the reaction is spontaneous with K >> 1. This means that the products are favored at equilibrium, and the reaction proceeds in the forward direction. The negative value of ΔG° indicates that the reaction releases energy.

Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) - Question 6
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What is the relationship between Gibbs free energy (ΔG) and the electromotive force (EMF) of a cell in a galvanic cell?
Detailed Solution for Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) - Question 6

The relationship between Gibbs free energy (ΔG) and the electromotive force (EMF) of a cell in a galvanic cell is given by the equation ΔG = nFE(cell), where n is the number of moles of electrons involved, F is the Faraday constant, and E(cell) is the EMF of the cell. This equation relates the free energy change to the electrical work done by the cell.

Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) - Question 7
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What is the unit of standard Gibbs free energy of formation (ΔfG°)?
Detailed Solution for Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) - Question 7

The unit of standard Gibbs free energy of formation (ΔfG°) is Joules per mole (J/mol). It represents the change in Gibbs free energy when one mole of a substance is formed from its component elements in their standard states.

Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) - Question 8
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What is the condition for a reaction to be considered spontaneous according to Gibbs free energy (?G)?
Detailed Solution for Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) - Question 8

According to Gibbs free energy, a reaction is considered spontaneous when ΔG is less than 0. This indicates that the reaction can occur spontaneously and release energy. When ΔG is greater than 0, the reaction is non-spontaneous.

Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) - Question 9
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Which law of thermodynamics is based on the concepts of entropy and spontaneity?
Detailed Solution for Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) - Question 9
The second law of thermodynamics is based on the concepts of entropy and spontaneity. It states that all spontaneous processes are thermodynamically irreversible, and the entropy of the universe continuously increases. This law is essential in understanding the direction and feasibility of thermodynamic processes.
Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) - Question 10
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What is the equation for Gibbs free energy (G)?
Detailed Solution for Test: Relationship between Equilibrium Constant K, & Gibbs Free Energy (11 July) - Question 10

The equation for Gibbs free energy (G) is given by G = H - TS, as stated in the provided text. This equation represents the maximum amount of work that can be extracted from a closed system at constant temperature and pressure. It accounts for the enthalpy (H), temperature (T), and entropy (S) of the system.

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