The Gibbs energy for the decomposition of Al2O3 at 500∘C is as follows 32Al2O3⟶34Al+O2,ΔrG=+966 kJ mol−1 The potential difference needed for electrolytic reduction of Al2O3 at 500∘C is at least

32Al2O3⟶34Al+O2 Thus, 32×3(O2−) i.e., 2O2−[O2+4e−1 ΔG=+966 kJ mol−1=966×103 J mol−1 ΔG=−nFEcell 966×103=−4×96500×Ecell Ecell =2.5 V

Get 2 FREE Instant-Explanations on Filo with code FILOAPP

Electrochemical cell and Gibbs energy of the reaction

The Gibbs energy for the decomposition of {Al}_{2}{O}_{3} at 5

Question

Easy

Solving time: 2 mins

The Gibbs energy for the decomposition of $Al_{2} O_{3}$ at $50 0^{\circ} C$ is as follows $\frac{2}{3} Al_{2} O_{3} ⟶ \frac{4}{3} Al + O_{2}, Δ_{r} G = + 966 kJ mol^{- 1}$ The potential difference needed for electrolytic reduction of $Al_{2} O_{3}$ at $50 0^{\circ} C$ is at least

4.5 V

3.0 V

2.5 V

5.0 V

Views: 6,331 students

Updated on: Jun 12, 2023

Book:

Arihant Chemistry JEE Main Chapterwise Solutions (2019-2002) (Arihant)

Exam:

JEE Mains 2010

Found 8 tutors discussing this question

Levi Discussed

The Gibbs energy for the decomposition of

Al_{2} O_{3}

50 0^{\circ} C

is as follows

\frac{2}{3} Al_{2} O_{3} ⟶ \frac{4}{3} Al + O_{2}, Δ_{r} G = + 966 kJ mol^{- 1}

The potential difference needed for electrolytic reduction of

Al_{2} O_{3}

50 0^{\circ} C

is at least

6 mins ago

Discuss this question LIVE

6 mins ago

Text solutionVerified

\frac{2}{3} Al_{2} O_{3} ⟶ \frac{4}{3} Al + O_{2}

Thus,

\frac{2}{3} \times 3 (O^{2 -})

i.e., 2 O^{2 -} [O_{2} + 4 e^{- 1}

Δ G = + 966 kJ mol^{- 1} = 966 \times 1 0^{3} J mol^{- 1}

Δ G = - n F E_{cell}

966 \times 1 0^{3} = - 4 \times 96500 \times E_{cell}

E_{cell} = 2.5 V

Was this solution helpful?

104

Report

Filo tutor solutions (15)

Learn from their 1-to-1 discussion with Filo tutors.

7 mins

Uploaded on: 4/5/2023

Ask your question, on a video call with tutor

Connect instantly with this tutor

Connect now

Taught by

Deepak Soni

Total classes on Filo by this tutor - 2,692

Teaches : Chemistry, Biology, Physical Chemistry

Connect instantly with this tutor

Connect now

Notes from this class (3 pages)

Download

Was this solution helpful?

Report

6 mins

Uploaded on: 4/9/2023

Ask your question, on a video call with tutor

Connect instantly with this tutor

Connect now

Taught by

Ramu

Total classes on Filo by this tutor - 5,208

Teaches : Physical Chemistry, Organic Chemistry, Inorganic Chemistry

Connect instantly with this tutor

Connect now

Notes from this class (1 pages)

Download

Was this solution helpful?

129

Report

14 mins

Uploaded on: 5/11/2023

Ask your question, on a video call with tutor

Connect instantly with this tutor

Connect now

Taught by

E Sudhir

Total classes on Filo by this tutor - 6,215

Teaches : Physical Chemistry, Inorganic Chemistry

Connect instantly with this tutor

Connect now

Notes from this class (5 pages)

Download

Was this solution helpful?

140

Report

See more 1-on-1 discussions (12)

One destination for complete JEE/NEET preparation

One destination to cover all your homework and assignment needs

Learn Practice Revision Succeed

Instant 1:1 help, 24x7

60, 000+ Expert tutors

Textbook solutions

Big idea maths, McGraw-Hill Education etc

Essay review

Get expert feedback on your essay

Schedule classes

High dosage tutoring from Dedicated 3 experts

Trusted by 4 million+ students

Stuck on the question or explanation?

Connect with our Chemistry tutors online and get step by step solution of this question.

231 students are taking LIVE classes

Question Text	The Gibbs energy for the decomposition of $Al_{2} O_{3}$ at $50 0^{\circ} C$ is as follows $\frac{2}{3} Al_{2} O_{3} ⟶ \frac{4}{3} Al + O_{2}, Δ_{r} G = + 966 kJ mol^{- 1}$ The potential difference needed for electrolytic reduction of $Al_{2} O_{3}$ at $50 0^{\circ} C$ is at least
Updated On	Jun 12, 2023
Topic	Electrochemistry
Subject	Chemistry
Class	Class 12
Answer Type	Text solution:1 Video solution: 15
Upvotes	1721
Avg. Video Duration	6 min

The Gibbs energy for the decomposition of $Al_{2} O_{3}$ at $50 0^{\circ} C$ is as follows $\frac{2}{3} Al_{2} O_{3} ⟶ \frac{4}{3} Al + O_{2}, Δ_{r} G = + 966 kJ mol^{- 1}$ The potential difference needed for electrolytic reduction of $Al_{2} O_{3}$ at $50 0^{\circ} C$ is at least

Text solutionVerified

Filo tutor solutions (15)

Questions from JEE Mains 2010 - PYQs

Practice questions from Arihant Chemistry JEE Main Chapterwise Solutions (2019-2002) (Arihant)

Practice questions from Electrochemistry in the same exam

Practice more questions from Electrochemistry

Practice questions on similar concepts asked by Filo students

The Gibbs energy for the decomposition of Al2​O3​ at 500∘C is as follows 32​Al2​O3​⟶34​Al+O2​,Δr​G=+966 kJ mol−1 The potential difference needed for electrolytic reduction of Al2​O3​ at 500∘C is at least

Text solutionVerified

Filo tutor solutions (15)

Questions from JEE Mains 2010 - PYQs

Practice questions from Arihant Chemistry JEE Main Chapterwise Solutions (2019-2002) (Arihant)

Practice questions from Electrochemistry in the same exam

Practice more questions from Electrochemistry

Practice questions on similar concepts asked by Filo students

Related books for questions on Electrochemistry

Previous year question papers

The Gibbs energy for the decomposition of $Al_{2} O_{3}$ at $50 0^{\circ} C$ is as follows $\frac{2}{3} Al_{2} O_{3} ⟶ \frac{4}{3} Al + O_{2}, Δ_{r} G = + 966 kJ mol^{- 1}$ The potential difference needed for electrolytic reduction of $Al_{2} O_{3}$ at $50 0^{\circ} C$ is at least