what is the role of graphite rod in the electrometallurgy

GSEB Solutions Class 12 Chemistry Chapter 6 General

What is the role of a graphite rod in the electrometallurgy of aluminium? Answer: Graphite rods act as anode and get burnt away as CO and CO 2 during the process of electrolysis. In other words, graphite rods prevent the liberation of O 2 at the anode which may

Class 12 Chemistry Important Questions Chapter 6 General

What is the role of graphite in the electrometallurgy of aluminium? (CBSE Delhi 2012) Answer: The graphite rod is useful in the electrometallurgy of aluminium for reduction of alumina to aluminium. 2Al 2 O 3 + 3C → 4Al + 3CO 2 Question 13. Why is it that only

NCERT Solutions For Class 12 Chemistry Chapter 6 General

6.25. What is the role of graphite rod in the electrometallurgy of aluminium? Ans: In the electrometallurgy of aluminium, oxygen gas is evolved at anode. O 2 reacts with graphite or carbon (graphite electrodes) to form carbon monoxide and carbon dioxide.

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1 06 and Processes of Isolation of Elements

Write the role of graphite rod in the electrometallurgy of aluminium. (1/2, Delhi, Foreign 2012) 66. How is copper extracted from a low grade ore of it? (AI 2012) 67. Which method is employed for extracting copper from low grade ores and scraps? (AI 2012 C) 68.

INTERNATIONAL INDIAN SCHOOL, RIYADH XI XII SECTION CLASS: XII WORKSHEET (2019

What is the role of graphite rod in the electrometallurgy of aluminium? 3. Why copper matte is put in silica lined converter? 4. What is the role of cryolite in the metallurgy of aluminium? 5. How is leaching carried out in case of low grade copper ores? 7. How can

what is the role of graphite rod in electrometallurgy of

In the electrometallurgy of aluminium, a fused mixture of purified alumina (Al2O3), cryolite (Na3AlF6) and fluorspar (CaF2) is electrolysed. In the synthesis of aluminium from electrometallurgically, graphite rod is used as an anode and graphite made line iron is

Ask Questions for CBSE Class 12 Chemistry Isolation of

What is the role of graphite rod in the electrometallurgy of aluminium? Asked by Anjali Sharma Outline the principles of refining of metals by the following methods: (i) Zone refining (ii) Electrolytic refining (iii) Vapour phase refining Asked by Anjali Sharma

Which of the ores mentioned in Table 6.1 can be concentrated by

What is the role of graphite rod in the electrometallurgy of aluminium? Watch Video Solution On Doubtnut App Exercise 6.30 Outline the principles of refining of metals by the following methods : (a) Electrolytic refining (b) Zone refining ( c) Vapour phase refining.

Ask Questions for CBSE Class 12 Chemistry Isolation of

What is the role of graphite rod in the electrometallurgy of aluminium? Asked by Anjali Sharma Outline the principles of refining of metals by the following methods: (i) Zone refining (ii) Electrolytic refining (iii) Vapour phase refining Asked by Anjali Sharma

INTERNATIONAL INDIAN SCHOOL, RIYADH XI XII SECTION CLASS: XII WORKSHEET (2019

What is the role of graphite rod in the electrometallurgy of aluminium? 3. Why copper matte is put in silica lined converter? 4. What is the role of cryolite in the metallurgy of aluminium? 5. How is leaching carried out in case of low grade copper ores? 7. How can

General Principles and Processes of Isolation of Elements

What is the role of graphite in the electrometallurgy of aluminium? (CBSE Delhi 2012) Answer: The graphite rod is useful in the electrometallurgy of aluminium for reduction of alumina to aluminium. 2Al 2 O 3 + 3C → 4Al + 3CO 2 Question 13. Why is it that only

Plus Two Chemistry Chapter Wise Questions and Answers

2019/4/10What is the role of graphite rod in the electrometallurgy of aluminium? Answer: Graphite rod acts as anode in the electrometallurgy of aluminium. Graphite anode facilitates reduction of Al 2 O 3 to aluminium by electrolysis. Carbon reacts with oxygen liberated at 2

Chapter: 6 General Principles Process of Isolation of Elements

A.4- Graphite rods act as anode, are attacked by oxygen to form CO2 and so to be replace time to time. Q.5- What is the role of cryolite in electrometallurgy of aluminium? A.5- alumina cannot be fused easily because of high melting point.

General Principles and Process of Isolation of Element 0

Q.4- What is the role of graphite rods in electrometallurgy of aluminium ? A.4- Graphite rods act as anode, are attacked by oxygen to form CO 2 and so to be replace time to time. Q.5- What is the role of cryolite in electrometallurgy of aluminium? A.5- alumina 3+

NCERT Solutions class 12 Chemistry Isolation of

25. What is the role of graphite rod in the electrometallurgy of aluminium? 26. Outline the principles of refining of metals by the following methods: (i) Zone refining (ii) Electrolytic refining (iii) Vapour phase refining 27. Predict conditions under which Al might be.

What is the Role of Graphite Rod in the

In the electrometallurgy of aluminium, oxygen gas is evolved at anode. O 2 reacts with graphite or carbon (graphite electrodes) to form carbon monoxide and carbon dioxide. In case if some other metal electrodes is used as anode, then oxygen will react with aluminium formed during the process to form aluminium oxide(Al 2 O 3 ) which will pass into the reaction mixture resulting into wastage of Al.

MP Board Class 12th Chemistry Solutions Chapter 6

2021/2/17What is the role of a graphite rod in the electrometallurgy of aluminium? Answer: In the electrolytic reduction of alumina, graphite anode facilitates the reduction of Al 2 O 3 to aluminium by electrolysis. Carbon reacts with oxygen liberated at anode producing CO 2

During the electrolysis of fused NaCl, the reaction at

Electrometallurgy is used for View solution What is the role of graphite rod in the electrometallurgy of aluminium? View solution A metal 'X' is prepared by the electrolysis of fused chloride. It reacts with hydrogen to form a colourless solid, from which hydrogen

2nd PUC Chemistry Question Bank Chapter 6 General

Since graphite is much cheaper than any metal, therefore, graphite is used as the anode. Thus the role of graphite in the electrometallurgy of Al is to prevent the liberation of O 2 at the anode which may otherwise oxidise some of the liberated Al back to Al 2 O 3.

CBSE NCERT Solution for Class 12

Graphite rod acts as anode and graphite lined iron acts as a cathode in the electrometallurgy of aluminium. Carbon reacts with oxygen liberated at anode producing CO and CO 2 otherwise oxygen liberated at the anode may oxidize some of the liberated aluminium back to Al 2 O 3 .

2nd PUC Chemistry Question Bank Chapter 6 General

2nd PUC Chemistry General Principles and Processes of Isolation of Elements NCERT Textbook Questions and Answers Question 1. Copper can be extracted by hydrometallurgy but not zinc. Explain. Answer: The E of zinc (Zn 2+ / Zn = -0.76v) or iron (Fe 2+ / Ee = -0.44v) is lower than that of copper (Cu 2+ / Cu = + 0.34v) and hence both Zn and Fe, can displace Cu from solutions of Cu 2+ ions.

NCERT Solutions class 12 Chemistry Isolation of

25. What is the role of graphite rod in the electrometallurgy of aluminium? 26. Outline the principles of refining of metals by the following methods: (i) Zone refining (ii) Electrolytic refining (iii) Vapour phase refining 27. Predict conditions under which Al might be.

PLANCESS RANK ACCELERATOR CHEMISTRY

Q.11 What is the role of graphite rod in the electrometallurgy of aluminium? Q.12 Describe a method for refining nickel. Q.13 Giving examples, differentiate between 'roasting' and 'calcination. Q.14 Why copper matte is put in silica lined converter? Q.15 What is

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