Redox Reactions and Thermodynamics

Redox Reactions and Thermodynamics

Assessment

Interactive Video

Chemistry, Science

10th Grade - University

Practice Problem

Hard

Created by

Aiden Montgomery

FREE Resource

The video tutorial explains the relationship between free energy and redox potential using the equation delta G = -nFE. It covers how to calculate delta G and the equilibrium constant K from the standard potential E. An example redox reaction is used to demonstrate these calculations, showing that a positive standard potential leads to a thermodynamically favored reaction with a negative delta G and a large equilibrium constant. The tutorial concludes with a summary of the implications of positive and negative standard potentials on reaction favorability and equilibrium.

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the variable 'n' represent in the equation ΔG = -nFE?

The number of moles of reactants

The number of electrons transferred

The temperature in Kelvin

The potential of the reaction

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is ΔG° related to the equilibrium constant K?

ΔG° is unrelated to K

ΔG° is equal to K

ΔG° is inversely proportional to K

ΔG° is directly proportional to K

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the example redox reaction, what is the standard potential E°?

3.00 volts

2.00 volts

1.54 volts

0.00 volts

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the value of ΔG° for the example redox reaction at 25°C?

-446 kJ/mol

446 kJ/mol

100 kJ/mol

0 kJ/mol

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does a positive standard potential indicate about a reaction?

The reaction does not occur

The reaction is thermodynamically favored

The reaction is at equilibrium

The reaction is thermodynamically unfavorable

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the equilibrium constant K when ΔG° is negative?

K is equal to one

K is greater than one

K is less than one

K is zero

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the standard potential E° is negative, what can be said about ΔG°?

ΔG° is negative

ΔG° is zero

ΔG° is positive

ΔG° is undefined

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