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Direction: Sanjana observed that when 3.0 gm of carbon is burnt in 8.0 gm of oxygen, 11.0 gm of carbon dioxide is produced. Based on the given information, answer the following questions.
Q. In what ratio does carbon and oxygen combine to form carbon dioxide?
- a)2 : 3
- b)3 : 8
- c)3 : 2
- d)8 : 3
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Direction: Sanjana observed that when 3.0 gm of carbon is burnt in 8....
When 3.0 gm of carbon is burnt in 8.0 gm oxygen, 11.0 gm of carbon dioxide is produced. It means carbon and oxygen are combined in the ratio of 3 : 8 to form carbon dioxide. Thus, when there is 3 gm carbon and 50 gm oxygen, then also only 8 gm of oxygen will be used and 11 gm of carbon dioxide will be formed. The remaining oxygen is not used.
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Direction: Sanjana observed that when 3.0 gm of carbon is burnt in 8....
Understanding the Reaction
In the combustion of carbon, carbon reacts with oxygen to produce carbon dioxide. This can be represented as:
- C + O2 → CO2
Given Data
- Mass of carbon (C) = 3.0 gm
- Mass of oxygen (O2) = 8.0 gm
- Mass of carbon dioxide (CO2) produced = 11.0 gm
Calculating Molar Masses
- Molar mass of carbon (C) = 12 gm/mol
- Molar mass of oxygen (O2) = 32 gm/mol
- Molar mass of carbon dioxide (CO2) = 44 gm/mol
Calculating Moles
- Moles of carbon = Mass of carbon / Molar mass of carbon
= 3.0 gm / 12 gm/mol = 0.25 mol
- Moles of oxygen = Mass of oxygen / Molar mass of oxygen
= 8.0 gm / 32 gm/mol = 0.25 mol
Combining Ratios
From the moles calculated:
- Moles of carbon (C) = 0.25
- Moles of oxygen (O2) = 0.25
In the balanced equation, 1 mole of carbon reacts with 1 mole of oxygen. Thus, the ratio of moles of carbon to moles of oxygen is:
- Ratio of C to O2 = 0.25 : 0.25 = 1 : 1
However, when considering their mass in the reaction:
- The equivalent mass ratio of carbon to oxygen can be derived from their respective weights, leading us to the conclusion of 3:8 when considering the mass contribution to the CO2 produced.
Conclusion
Thus, the correct ratio of carbon to oxygen in the formation of carbon dioxide is:
- b) 3 : 8
This indicates that for every 3 grams of carbon, 8 grams of oxygen are required to produce 11 grams of carbon dioxide.
In the combustion of carbon, carbon reacts with oxygen to produce carbon dioxide. This can be represented as:
- C + O2 → CO2
Given Data
- Mass of carbon (C) = 3.0 gm
- Mass of oxygen (O2) = 8.0 gm
- Mass of carbon dioxide (CO2) produced = 11.0 gm
Calculating Molar Masses
- Molar mass of carbon (C) = 12 gm/mol
- Molar mass of oxygen (O2) = 32 gm/mol
- Molar mass of carbon dioxide (CO2) = 44 gm/mol
Calculating Moles
- Moles of carbon = Mass of carbon / Molar mass of carbon
= 3.0 gm / 12 gm/mol = 0.25 mol
- Moles of oxygen = Mass of oxygen / Molar mass of oxygen
= 8.0 gm / 32 gm/mol = 0.25 mol
Combining Ratios
From the moles calculated:
- Moles of carbon (C) = 0.25
- Moles of oxygen (O2) = 0.25
In the balanced equation, 1 mole of carbon reacts with 1 mole of oxygen. Thus, the ratio of moles of carbon to moles of oxygen is:
- Ratio of C to O2 = 0.25 : 0.25 = 1 : 1
However, when considering their mass in the reaction:
- The equivalent mass ratio of carbon to oxygen can be derived from their respective weights, leading us to the conclusion of 3:8 when considering the mass contribution to the CO2 produced.
Conclusion
Thus, the correct ratio of carbon to oxygen in the formation of carbon dioxide is:
- b) 3 : 8
This indicates that for every 3 grams of carbon, 8 grams of oxygen are required to produce 11 grams of carbon dioxide.
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Direction: Sanjana observed that when 3.0 gm of carbon is burnt in 8.0 gm of oxygen, 11.0 gm of carbon dioxide is produced. Based on the given information, answer the following questions.Q. In what ratio does carbon and oxygen combine to form carbon dioxide?a)2 : 3b)3 : 8c)3 : 2d)8 : 3Correct answer is option 'B'. Can you explain this answer?
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Direction: Sanjana observed that when 3.0 gm of carbon is burnt in 8.0 gm of oxygen, 11.0 gm of carbon dioxide is produced. Based on the given information, answer the following questions.Q. In what ratio does carbon and oxygen combine to form carbon dioxide?a)2 : 3b)3 : 8c)3 : 2d)8 : 3Correct answer is option 'B'. Can you explain this answer? for Class 9 2025 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Direction: Sanjana observed that when 3.0 gm of carbon is burnt in 8.0 gm of oxygen, 11.0 gm of carbon dioxide is produced. Based on the given information, answer the following questions.Q. In what ratio does carbon and oxygen combine to form carbon dioxide?a)2 : 3b)3 : 8c)3 : 2d)8 : 3Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: Sanjana observed that when 3.0 gm of carbon is burnt in 8.0 gm of oxygen, 11.0 gm of carbon dioxide is produced. Based on the given information, answer the following questions.Q. In what ratio does carbon and oxygen combine to form carbon dioxide?a)2 : 3b)3 : 8c)3 : 2d)8 : 3Correct answer is option 'B'. Can you explain this answer?.
Direction: Sanjana observed that when 3.0 gm of carbon is burnt in 8.0 gm of oxygen, 11.0 gm of carbon dioxide is produced. Based on the given information, answer the following questions.Q. In what ratio does carbon and oxygen combine to form carbon dioxide?a)2 : 3b)3 : 8c)3 : 2d)8 : 3Correct answer is option 'B'. Can you explain this answer? for Class 9 2025 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Direction: Sanjana observed that when 3.0 gm of carbon is burnt in 8.0 gm of oxygen, 11.0 gm of carbon dioxide is produced. Based on the given information, answer the following questions.Q. In what ratio does carbon and oxygen combine to form carbon dioxide?a)2 : 3b)3 : 8c)3 : 2d)8 : 3Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: Sanjana observed that when 3.0 gm of carbon is burnt in 8.0 gm of oxygen, 11.0 gm of carbon dioxide is produced. Based on the given information, answer the following questions.Q. In what ratio does carbon and oxygen combine to form carbon dioxide?a)2 : 3b)3 : 8c)3 : 2d)8 : 3Correct answer is option 'B'. Can you explain this answer?.
Solutions for Direction: Sanjana observed that when 3.0 gm of carbon is burnt in 8.0 gm of oxygen, 11.0 gm of carbon dioxide is produced. Based on the given information, answer the following questions.Q. In what ratio does carbon and oxygen combine to form carbon dioxide?a)2 : 3b)3 : 8c)3 : 2d)8 : 3Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9.
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Direction: Sanjana observed that when 3.0 gm of carbon is burnt in 8.0 gm of oxygen, 11.0 gm of carbon dioxide is produced. Based on the given information, answer the following questions.Q. In what ratio does carbon and oxygen combine to form carbon dioxide?a)2 : 3b)3 : 8c)3 : 2d)8 : 3Correct answer is option 'B'. Can you explain this answer?, a detailed solution for Direction: Sanjana observed that when 3.0 gm of carbon is burnt in 8.0 gm of oxygen, 11.0 gm of carbon dioxide is produced. Based on the given information, answer the following questions.Q. In what ratio does carbon and oxygen combine to form carbon dioxide?a)2 : 3b)3 : 8c)3 : 2d)8 : 3Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of Direction: Sanjana observed that when 3.0 gm of carbon is burnt in 8.0 gm of oxygen, 11.0 gm of carbon dioxide is produced. Based on the given information, answer the following questions.Q. In what ratio does carbon and oxygen combine to form carbon dioxide?a)2 : 3b)3 : 8c)3 : 2d)8 : 3Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
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