Class 9 Exam > Class 9 Questions > In water, hydrogen and oxygen are present in...
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In water, hydrogen and oxygen are present in the ratio of
- a)1 : 2
- b)1 : 8
- c)2 : 12
- d)2 : 3
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
In water, hydrogen and oxygen are present in the ratio ofa)1 : 2b)1 :...
Understanding the Composition of Water
Water is a chemical compound composed of hydrogen and oxygen. Its molecular formula is H2O, indicating that each molecule of water consists of two hydrogen atoms and one oxygen atom.
Ratio of Elements in Water
- Hydrogen Atoms: 2 (from H2)
- Oxygen Atoms: 1 (from O)
To find the ratio of the masses of hydrogen to oxygen in water, we need to consider the atomic masses of these elements:
- Atomic Mass of Hydrogen: Approximately 1 g/mol
- Atomic Mass of Oxygen: Approximately 16 g/mol
Calculating the Mass Ratio
- Mass of Hydrogen in H2O:
- 2 Hydrogen atoms x 1 g/mol = 2 g
- Mass of Oxygen in H2O:
- 1 Oxygen atom x 16 g/mol = 16 g
Now, we can express the mass ratio of hydrogen to oxygen:
- Mass Ratio: 2 g (H) : 16 g (O)
This can be simplified to:
- Simplified Ratio: 1 : 8
Conclusion
Therefore, in water, the ratio of hydrogen to oxygen by mass is indeed 1:8. The correct answer to the question is option 'B'.
Water is a chemical compound composed of hydrogen and oxygen. Its molecular formula is H2O, indicating that each molecule of water consists of two hydrogen atoms and one oxygen atom.
Ratio of Elements in Water
- Hydrogen Atoms: 2 (from H2)
- Oxygen Atoms: 1 (from O)
To find the ratio of the masses of hydrogen to oxygen in water, we need to consider the atomic masses of these elements:
- Atomic Mass of Hydrogen: Approximately 1 g/mol
- Atomic Mass of Oxygen: Approximately 16 g/mol
Calculating the Mass Ratio
- Mass of Hydrogen in H2O:
- 2 Hydrogen atoms x 1 g/mol = 2 g
- Mass of Oxygen in H2O:
- 1 Oxygen atom x 16 g/mol = 16 g
Now, we can express the mass ratio of hydrogen to oxygen:
- Mass Ratio: 2 g (H) : 16 g (O)
This can be simplified to:
- Simplified Ratio: 1 : 8
Conclusion
Therefore, in water, the ratio of hydrogen to oxygen by mass is indeed 1:8. The correct answer to the question is option 'B'.
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Community Answer
In water, hydrogen and oxygen are present in the ratio ofa)1 : 2b)1 :...
H2O = 2 : 16 = 1 : 8
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In water, hydrogen and oxygen are present in the ratio ofa)1 : 2b)1 : 8c)2 : 12d)2 : 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 In water, hydrogen and oxygen are present in the ratio ofa)1 : 2b)1 : 8c)2 : 12d)2 : 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 In water, hydrogen and oxygen are present in the ratio ofa)1 : 2b)1 : 8c)2 : 12d)2 : 3Correct answer is option 'B'. Can you explain this answer?.
In water, hydrogen and oxygen are present in the ratio ofa)1 : 2b)1 : 8c)2 : 12d)2 : 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 In water, hydrogen and oxygen are present in the ratio ofa)1 : 2b)1 : 8c)2 : 12d)2 : 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 In water, hydrogen and oxygen are present in the ratio ofa)1 : 2b)1 : 8c)2 : 12d)2 : 3Correct answer is option 'B'. Can you explain this answer?.
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