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A student heated small amount of ferrous sulphate in a test tube. She made the following observations.
(i) Ferrous colours sulphate changes to brown
(ii) A gas having a smell of burning sulphur is evolved
(iii) Water droplets collect on the upper side of the test tube.
(iv) Brown colured gas is evolved The correct set of observations is :
- a)(i), (ii), (iv)
- b)(i) (ii) (iii)
- c)(i), (iii), (iv)
- d)(ii), (iii), (iv)
Correct answer is option 'B'. Can you explain this answer?
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A student heated small amount of ferrous sulphate in a test tube. She ...
Correct, the correct set of observations is (i), (ii), and (iii). The heating of ferrous sulfate causes a chemical reaction that results in the change of color to brown, the evolution of a gas with a smell of burning sulfur, and the collection of water droplets on the upper side of the test tube.
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A student heated small amount of ferrous sulphate in a test tube. She ...
Observations:
(i) Ferrous sulphate changes to brown
(ii) A gas with a smell of burning sulphur is evolved
(iii) Water droplets collect on the upper side of the test tube
(iv) Brown colored gas is evolved
Explanation:
When ferrous sulphate (FeSO4) is heated, it undergoes a decomposition reaction. Let's analyze each observation to understand the changes that occur during this reaction.
(i) Ferrous sulphate changes to brown:
When heated, ferrous sulphate undergoes thermal decomposition to form ferric oxide (Fe2O3), which is brown in color. The reaction can be represented as:
2FeSO4(s) → Fe2O3(s) + SO2(g) + SO3(g)
The brown color observed is due to the formation of ferric oxide.
(ii) A gas with a smell of burning sulphur is evolved:
During the thermal decomposition of ferrous sulphate, two gases are evolved - sulfur dioxide (SO2) and sulfur trioxide (SO3). The smell of burning sulfur is associated with the release of sulfur dioxide gas. The reaction can be represented as:
2FeSO4(s) → Fe2O3(s) + SO2(g) + SO3(g)
(iii) Water droplets collect on the upper side of the test tube:
The formation of water droplets on the upper side of the test tube is due to the condensation of water vapor. Water vapor is produced as a byproduct of the thermal decomposition reaction. The reaction can be represented as:
2FeSO4(s) → Fe2O3(s) + SO2(g) + SO3(g) + H2O(g)
As the gases cool down, water vapor condenses and forms droplets on the upper side of the test tube.
(iv) Brown colored gas is evolved:
The brown colored gas observed is likely the sulfur trioxide (SO3) produced during the thermal decomposition of ferrous sulphate. This gas can react with moisture in the air to form a brown mist of sulfuric acid (H2SO4) droplets.
Conclusion:
Based on the observations, the correct set of observations is (i), (ii), (iii) - the color change of ferrous sulphate to brown, evolution of gas with a smell of burning sulphur, and the formation of water droplets on the upper side of the test tube.
(i) Ferrous sulphate changes to brown
(ii) A gas with a smell of burning sulphur is evolved
(iii) Water droplets collect on the upper side of the test tube
(iv) Brown colored gas is evolved
Explanation:
When ferrous sulphate (FeSO4) is heated, it undergoes a decomposition reaction. Let's analyze each observation to understand the changes that occur during this reaction.
(i) Ferrous sulphate changes to brown:
When heated, ferrous sulphate undergoes thermal decomposition to form ferric oxide (Fe2O3), which is brown in color. The reaction can be represented as:
2FeSO4(s) → Fe2O3(s) + SO2(g) + SO3(g)
The brown color observed is due to the formation of ferric oxide.
(ii) A gas with a smell of burning sulphur is evolved:
During the thermal decomposition of ferrous sulphate, two gases are evolved - sulfur dioxide (SO2) and sulfur trioxide (SO3). The smell of burning sulfur is associated with the release of sulfur dioxide gas. The reaction can be represented as:
2FeSO4(s) → Fe2O3(s) + SO2(g) + SO3(g)
(iii) Water droplets collect on the upper side of the test tube:
The formation of water droplets on the upper side of the test tube is due to the condensation of water vapor. Water vapor is produced as a byproduct of the thermal decomposition reaction. The reaction can be represented as:
2FeSO4(s) → Fe2O3(s) + SO2(g) + SO3(g) + H2O(g)
As the gases cool down, water vapor condenses and forms droplets on the upper side of the test tube.
(iv) Brown colored gas is evolved:
The brown colored gas observed is likely the sulfur trioxide (SO3) produced during the thermal decomposition of ferrous sulphate. This gas can react with moisture in the air to form a brown mist of sulfuric acid (H2SO4) droplets.
Conclusion:
Based on the observations, the correct set of observations is (i), (ii), (iii) - the color change of ferrous sulphate to brown, evolution of gas with a smell of burning sulphur, and the formation of water droplets on the upper side of the test tube.
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A student heated small amount of ferrous sulphate in a test tube. She made the following observations.(i) Ferrous colours sulphate changes to brown(ii) A gas having a smell of burning sulphur is evolved(iii) Water droplets collect on the upper side of the test tube.(iv) Brown colured gas is evolved The correct set of observations is :a)(i), (ii), (iv)b)(i) (ii) (iii)c)(i), (iii), (iv)d)(ii), (iii), (iv)Correct answer is option 'B'. Can you explain this answer?
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A student heated small amount of ferrous sulphate in a test tube. She made the following observations.(i) Ferrous colours sulphate changes to brown(ii) A gas having a smell of burning sulphur is evolved(iii) Water droplets collect on the upper side of the test tube.(iv) Brown colured gas is evolved The correct set of observations is :a)(i), (ii), (iv)b)(i) (ii) (iii)c)(i), (iii), (iv)d)(ii), (iii), (iv)Correct answer is option 'B'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about A student heated small amount of ferrous sulphate in a test tube. She made the following observations.(i) Ferrous colours sulphate changes to brown(ii) A gas having a smell of burning sulphur is evolved(iii) Water droplets collect on the upper side of the test tube.(iv) Brown colured gas is evolved The correct set of observations is :a)(i), (ii), (iv)b)(i) (ii) (iii)c)(i), (iii), (iv)d)(ii), (iii), (iv)Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A student heated small amount of ferrous sulphate in a test tube. She made the following observations.(i) Ferrous colours sulphate changes to brown(ii) A gas having a smell of burning sulphur is evolved(iii) Water droplets collect on the upper side of the test tube.(iv) Brown colured gas is evolved The correct set of observations is :a)(i), (ii), (iv)b)(i) (ii) (iii)c)(i), (iii), (iv)d)(ii), (iii), (iv)Correct answer is option 'B'. Can you explain this answer?.
A student heated small amount of ferrous sulphate in a test tube. She made the following observations.(i) Ferrous colours sulphate changes to brown(ii) A gas having a smell of burning sulphur is evolved(iii) Water droplets collect on the upper side of the test tube.(iv) Brown colured gas is evolved The correct set of observations is :a)(i), (ii), (iv)b)(i) (ii) (iii)c)(i), (iii), (iv)d)(ii), (iii), (iv)Correct answer is option 'B'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about A student heated small amount of ferrous sulphate in a test tube. She made the following observations.(i) Ferrous colours sulphate changes to brown(ii) A gas having a smell of burning sulphur is evolved(iii) Water droplets collect on the upper side of the test tube.(iv) Brown colured gas is evolved The correct set of observations is :a)(i), (ii), (iv)b)(i) (ii) (iii)c)(i), (iii), (iv)d)(ii), (iii), (iv)Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A student heated small amount of ferrous sulphate in a test tube. She made the following observations.(i) Ferrous colours sulphate changes to brown(ii) A gas having a smell of burning sulphur is evolved(iii) Water droplets collect on the upper side of the test tube.(iv) Brown colured gas is evolved The correct set of observations is :a)(i), (ii), (iv)b)(i) (ii) (iii)c)(i), (iii), (iv)d)(ii), (iii), (iv)Correct answer is option 'B'. Can you explain this answer?.
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A student heated small amount of ferrous sulphate in a test tube. She made the following observations.(i) Ferrous colours sulphate changes to brown(ii) A gas having a smell of burning sulphur is evolved(iii) Water droplets collect on the upper side of the test tube.(iv) Brown colured gas is evolved The correct set of observations is :a)(i), (ii), (iv)b)(i) (ii) (iii)c)(i), (iii), (iv)d)(ii), (iii), (iv)Correct answer is option 'B'. Can you explain this answer?, a detailed solution for A student heated small amount of ferrous sulphate in a test tube. She made the following observations.(i) Ferrous colours sulphate changes to brown(ii) A gas having a smell of burning sulphur is evolved(iii) Water droplets collect on the upper side of the test tube.(iv) Brown colured gas is evolved The correct set of observations is :a)(i), (ii), (iv)b)(i) (ii) (iii)c)(i), (iii), (iv)d)(ii), (iii), (iv)Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of A student heated small amount of ferrous sulphate in a test tube. She made the following observations.(i) Ferrous colours sulphate changes to brown(ii) A gas having a smell of burning sulphur is evolved(iii) Water droplets collect on the upper side of the test tube.(iv) Brown colured gas is evolved The correct set of observations is :a)(i), (ii), (iv)b)(i) (ii) (iii)c)(i), (iii), (iv)d)(ii), (iii), (iv)Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
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