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Equivalent mass of K2Cr2O7 when it acts as an oxidizing agent in acidic medium?
- a)49
- b)96
- c)194
- d)294
Correct answer is option 'A'. Can you explain this answer?
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Equivalent mass of K2Cr2O7when it acts as an oxidizing agent in acidic...
The equivalent mass of K2Cr2O7 when it acts as an oxidizing agent in acidic medium is 49.
Explanation:
Equivalent mass is the molecular weight of a substance divided by its valency.
K2Cr2O7, in acidic medium, acts as an oxidizing agent and gets reduced to Cr3+ ion.
The balanced chemical equation for the reaction is:
K2Cr2O7 + 8H+ + 6e- → 2Cr3+ + 2K+ + 7H2O
From the equation, it can be seen that 1 mole of K2Cr2O7 accepts 6 moles of electrons.
The molecular weight of K2Cr2O7 is 294 g/mol and its valency is 6.
Therefore, the equivalent mass of K2Cr2O7 can be calculated as:
Equivalent mass = Molecular weight/Valency
Equivalent mass = 294/6
Equivalent mass = 49
Hence, the equivalent mass of K2Cr2O7 when it acts as an oxidizing agent in acidic medium is 49.
Explanation:
Equivalent mass is the molecular weight of a substance divided by its valency.
K2Cr2O7, in acidic medium, acts as an oxidizing agent and gets reduced to Cr3+ ion.
The balanced chemical equation for the reaction is:
K2Cr2O7 + 8H+ + 6e- → 2Cr3+ + 2K+ + 7H2O
From the equation, it can be seen that 1 mole of K2Cr2O7 accepts 6 moles of electrons.
The molecular weight of K2Cr2O7 is 294 g/mol and its valency is 6.
Therefore, the equivalent mass of K2Cr2O7 can be calculated as:
Equivalent mass = Molecular weight/Valency
Equivalent mass = 294/6
Equivalent mass = 49
Hence, the equivalent mass of K2Cr2O7 when it acts as an oxidizing agent in acidic medium is 49.
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Equivalent mass of K2Cr2O7when it acts as an oxidizing agent in acidic medium?a)49b)96c)194d)294Correct answer is option 'A'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Equivalent mass of K2Cr2O7when it acts as an oxidizing agent in acidic medium?a)49b)96c)194d)294Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Equivalent mass of K2Cr2O7when it acts as an oxidizing agent in acidic medium?a)49b)96c)194d)294Correct answer is option 'A'. Can you explain this answer?.
Equivalent mass of K2Cr2O7when it acts as an oxidizing agent in acidic medium?a)49b)96c)194d)294Correct answer is option 'A'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Equivalent mass of K2Cr2O7when it acts as an oxidizing agent in acidic medium?a)49b)96c)194d)294Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Equivalent mass of K2Cr2O7when it acts as an oxidizing agent in acidic medium?a)49b)96c)194d)294Correct answer is option 'A'. Can you explain this answer?.
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