Class 11 Exam > Class 11 Questions > Direction (Q. Nos. 27 and 28) This section co...
Start Learning for Free
Direction (Q. Nos. 27 and 28) This section contains 2 question. when worked out will result in an integer from 0 to 9 (both inclusive)
Q. In acidic medium,H2O2 changes Cr2O72- to CrO5 which has two (-O-O-) bonds. Oxidation state of Cr in CrO3 is
Correct answer is '6'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Direction (Q. Nos. 27 and 28) This section contains 2question. when wo...
When H2O2 is added to an acidified solution of a dichromate, Cr2O72-, aO deep blue coloured complex, chromic peroxide, CrO5 [ or CrO(O2)2] is formed.
Cr2O72- +2H++4H2O2 ---> 2CrO(O2)2 +5H2O
This deep blue coloured complex.
Oxidation state of Cr is +6 due to the presence of two peroxide linkages which can be calculated as Cr peroxide normal
x+(-1)4+(-2) =0
x-6 =0
x=+6
Cr2O72- +2H++4H2O2 ---> 2CrO(O2)2 +5H2O
This deep blue coloured complex.
Oxidation state of Cr is +6 due to the presence of two peroxide linkages which can be calculated as Cr peroxide normal
x+(-1)4+(-2) =0
x-6 =0
x=+6
Most Upvoted Answer
Direction (Q. Nos. 27 and 28) This section contains 2question. when wo...
Explanation:
In acidic medium, hydrogen peroxide (H2O2) changes dichromate ion (Cr2O72-) to perchromate ion (CrO5). The perchromate ion contains two peroxide (-O-O-) bonds. We need to determine the oxidation state of chromium (Cr) in chromium trioxide (CrO3).
Step 1:
To determine the oxidation state of chromium in CrO3, we need to assign oxidation states to the other elements present in the compound.
Step 2:
Oxygen (O) is usually assigned an oxidation state of -2, unless it is in a peroxide compound where it is assigned an oxidation state of -1.
Step 3:
Since there are three oxygen atoms in CrO3, the total oxidation state contribution from oxygen is -6 (-2 × 3 = -6).
Step 4:
The overall oxidation state of the compound is 0 (since the compound is neutral).
Step 5:
To determine the oxidation state of chromium, we subtract the oxidation state contribution from oxygen (-6) from the overall oxidation state (0).
0 - (-6) = +6
Therefore, the oxidation state of chromium in CrO3 is +6.
Conclusion:
The oxidation state of chromium in CrO3 is +6.
In acidic medium, hydrogen peroxide (H2O2) changes dichromate ion (Cr2O72-) to perchromate ion (CrO5). The perchromate ion contains two peroxide (-O-O-) bonds. We need to determine the oxidation state of chromium (Cr) in chromium trioxide (CrO3).
Step 1:
To determine the oxidation state of chromium in CrO3, we need to assign oxidation states to the other elements present in the compound.
Step 2:
Oxygen (O) is usually assigned an oxidation state of -2, unless it is in a peroxide compound where it is assigned an oxidation state of -1.
Step 3:
Since there are three oxygen atoms in CrO3, the total oxidation state contribution from oxygen is -6 (-2 × 3 = -6).
Step 4:
The overall oxidation state of the compound is 0 (since the compound is neutral).
Step 5:
To determine the oxidation state of chromium, we subtract the oxidation state contribution from oxygen (-6) from the overall oxidation state (0).
0 - (-6) = +6
Therefore, the oxidation state of chromium in CrO3 is +6.
Conclusion:
The oxidation state of chromium in CrO3 is +6.
Attention Class 11 Students!
To make sure you are not studying endlessly, EduRev has designed Class 11 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 11.
|
Explore Courses for Class 11 exam
|
|
Top Courses for Class 11View all
Direction (Q. Nos. 27 and 28) This section contains 2question. when worked out will result in an integer from 0 to 9 (both inclusive)Q.In acidic medium,H2O2changes Cr2O72-to CrO5which has two (-O-O-) bonds. Oxidation state of Cr in CrO3isCorrect answer is '6'. Can you explain this answer?
Question Description
Direction (Q. Nos. 27 and 28) This section contains 2question. when worked out will result in an integer from 0 to 9 (both inclusive)Q.In acidic medium,H2O2changes Cr2O72-to CrO5which has two (-O-O-) bonds. Oxidation state of Cr in CrO3isCorrect answer is '6'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Direction (Q. Nos. 27 and 28) This section contains 2question. when worked out will result in an integer from 0 to 9 (both inclusive)Q.In acidic medium,H2O2changes Cr2O72-to CrO5which has two (-O-O-) bonds. Oxidation state of Cr in CrO3isCorrect answer is '6'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction (Q. Nos. 27 and 28) This section contains 2question. when worked out will result in an integer from 0 to 9 (both inclusive)Q.In acidic medium,H2O2changes Cr2O72-to CrO5which has two (-O-O-) bonds. Oxidation state of Cr in CrO3isCorrect answer is '6'. Can you explain this answer?.
Direction (Q. Nos. 27 and 28) This section contains 2question. when worked out will result in an integer from 0 to 9 (both inclusive)Q.In acidic medium,H2O2changes Cr2O72-to CrO5which has two (-O-O-) bonds. Oxidation state of Cr in CrO3isCorrect answer is '6'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Direction (Q. Nos. 27 and 28) This section contains 2question. when worked out will result in an integer from 0 to 9 (both inclusive)Q.In acidic medium,H2O2changes Cr2O72-to CrO5which has two (-O-O-) bonds. Oxidation state of Cr in CrO3isCorrect answer is '6'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction (Q. Nos. 27 and 28) This section contains 2question. when worked out will result in an integer from 0 to 9 (both inclusive)Q.In acidic medium,H2O2changes Cr2O72-to CrO5which has two (-O-O-) bonds. Oxidation state of Cr in CrO3isCorrect answer is '6'. Can you explain this answer?.
Solutions for Direction (Q. Nos. 27 and 28) This section contains 2question. when worked out will result in an integer from 0 to 9 (both inclusive)Q.In acidic medium,H2O2changes Cr2O72-to CrO5which has two (-O-O-) bonds. Oxidation state of Cr in CrO3isCorrect answer is '6'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 11.
Download more important topics, notes, lectures and mock test series for Class 11 Exam by signing up for free.
Here you can find the meaning of Direction (Q. Nos. 27 and 28) This section contains 2question. when worked out will result in an integer from 0 to 9 (both inclusive)Q.In acidic medium,H2O2changes Cr2O72-to CrO5which has two (-O-O-) bonds. Oxidation state of Cr in CrO3isCorrect answer is '6'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Direction (Q. Nos. 27 and 28) This section contains 2question. when worked out will result in an integer from 0 to 9 (both inclusive)Q.In acidic medium,H2O2changes Cr2O72-to CrO5which has two (-O-O-) bonds. Oxidation state of Cr in CrO3isCorrect answer is '6'. Can you explain this answer?, a detailed solution for Direction (Q. Nos. 27 and 28) This section contains 2question. when worked out will result in an integer from 0 to 9 (both inclusive)Q.In acidic medium,H2O2changes Cr2O72-to CrO5which has two (-O-O-) bonds. Oxidation state of Cr in CrO3isCorrect answer is '6'. Can you explain this answer? has been provided alongside types of Direction (Q. Nos. 27 and 28) This section contains 2question. when worked out will result in an integer from 0 to 9 (both inclusive)Q.In acidic medium,H2O2changes Cr2O72-to CrO5which has two (-O-O-) bonds. Oxidation state of Cr in CrO3isCorrect answer is '6'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Direction (Q. Nos. 27 and 28) This section contains 2question. when worked out will result in an integer from 0 to 9 (both inclusive)Q.In acidic medium,H2O2changes Cr2O72-to CrO5which has two (-O-O-) bonds. Oxidation state of Cr in CrO3isCorrect answer is '6'. Can you explain this answer? tests, examples and also practice Class 11 tests.
|
|
Explore Courses for Class 11 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup