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Given below are two statements:
Statement I: Emulsions of oil in water are unstable and sometimes they separate into two layers on standing.
Statement II: For stabilisation of an emulsion, excess of electrolyte is added.
In the light of the above statements, choose the most appropriate answer from the options given below:
Statement I: Emulsions of oil in water are unstable and sometimes they separate into two layers on standing.
Statement II: For stabilisation of an emulsion, excess of electrolyte is added.
In the light of the above statements, choose the most appropriate answer from the options given below:
- a)Both Statement I and Statement II are correct.
- b)Both Statement I and Statement II are incorrect.
- c)Statement I is correct but Statement II is incorrect.
- d)Statement I is incorrect but Statement II is correct.
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
Given below are two statements:Statement I:Emulsions of oil in water a...
Statement I: Emulsions of oil in water are unstable and sometimes they separate into two layers on standing.
Statement II: For stabilisation of an emulsion, excess of electrolyte is added.
Explanation:
An emulsion is a type of colloidal dispersion in which one liquid is dispersed in another immiscible liquid. In the case of oil-in-water emulsion, oil droplets are dispersed in water. Emulsions are generally unstable and tend to separate into two layers on standing.
Reason for Statement I:
Emulsions are thermodynamically unstable systems. The instability is due to the difference in interfacial tension between the dispersed phase (oil) and the continuous phase (water). The interfacial tension tends to cause the oil droplets to coalesce and form larger droplets, leading to phase separation. This is known as coalescence.
Reason for Statement II:
To stabilize an emulsion, various emulsifying agents are used. These agents can be surfactants or polymers that reduce the interfacial tension between the oil and water phases and prevent coalescence. Excess of electrolyte can also be added to stabilize the emulsion. The addition of excess electrolyte causes the formation of a double layer of ions at the interface between oil and water, known as an electrical double layer. This double layer stabilizes the emulsion by creating a repulsive force between the droplets, preventing them from coalescing.
Conclusion:
Based on the above explanation, we can conclude that Statement I is correct. Emulsions of oil in water are indeed unstable and can separate into two layers on standing. However, Statement II is incorrect. While excess of electrolyte can be added to stabilize an emulsion, it is not the only method and various emulsifying agents can be used for this purpose. Therefore, the correct answer is option C: Statement I is correct but Statement II is incorrect.
Statement II: For stabilisation of an emulsion, excess of electrolyte is added.
Explanation:
An emulsion is a type of colloidal dispersion in which one liquid is dispersed in another immiscible liquid. In the case of oil-in-water emulsion, oil droplets are dispersed in water. Emulsions are generally unstable and tend to separate into two layers on standing.
Reason for Statement I:
Emulsions are thermodynamically unstable systems. The instability is due to the difference in interfacial tension between the dispersed phase (oil) and the continuous phase (water). The interfacial tension tends to cause the oil droplets to coalesce and form larger droplets, leading to phase separation. This is known as coalescence.
Reason for Statement II:
To stabilize an emulsion, various emulsifying agents are used. These agents can be surfactants or polymers that reduce the interfacial tension between the oil and water phases and prevent coalescence. Excess of electrolyte can also be added to stabilize the emulsion. The addition of excess electrolyte causes the formation of a double layer of ions at the interface between oil and water, known as an electrical double layer. This double layer stabilizes the emulsion by creating a repulsive force between the droplets, preventing them from coalescing.
Conclusion:
Based on the above explanation, we can conclude that Statement I is correct. Emulsions of oil in water are indeed unstable and can separate into two layers on standing. However, Statement II is incorrect. While excess of electrolyte can be added to stabilize an emulsion, it is not the only method and various emulsifying agents can be used for this purpose. Therefore, the correct answer is option C: Statement I is correct but Statement II is incorrect.
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Community Answer
Given below are two statements:Statement I:Emulsions of oil in water a...
Oil in water emulsions can sometimes separate into two layers on standing.
Therefore, Statement I is correct.
On adding excess of electrolyte, coagulation occurs and emulsion is further destabilised.
Therefore, Statement II is incorrect.
Therefore, Statement I is correct.
On adding excess of electrolyte, coagulation occurs and emulsion is further destabilised.
Therefore, Statement II is incorrect.
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Given below are two statements:Statement I:Emulsions of oil in water are unstable and sometimes they separate into two layers on standing.Statement II:For stabilisation of an emulsion, excess of electrolyte is added.In the light of the above statements, choose the most appropriate answer from the options given below:a)Both Statement I and Statement II are correct.b)Both Statement I and Statement II are incorrect.c)Statement I is correct but Statement II is incorrect.d)Statement I is incorrect but Statement II is correct.Correct answer is option 'C'. Can you explain this answer?
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Given below are two statements:Statement I:Emulsions of oil in water are unstable and sometimes they separate into two layers on standing.Statement II:For stabilisation of an emulsion, excess of electrolyte is added.In the light of the above statements, choose the most appropriate answer from the options given below:a)Both Statement I and Statement II are correct.b)Both Statement I and Statement II are incorrect.c)Statement I is correct but Statement II is incorrect.d)Statement I is incorrect but Statement II is correct.Correct answer is option 'C'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Given below are two statements:Statement I:Emulsions of oil in water are unstable and sometimes they separate into two layers on standing.Statement II:For stabilisation of an emulsion, excess of electrolyte is added.In the light of the above statements, choose the most appropriate answer from the options given below:a)Both Statement I and Statement II are correct.b)Both Statement I and Statement II are incorrect.c)Statement I is correct but Statement II is incorrect.d)Statement I is incorrect but Statement II is correct.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Given below are two statements:Statement I:Emulsions of oil in water are unstable and sometimes they separate into two layers on standing.Statement II:For stabilisation of an emulsion, excess of electrolyte is added.In the light of the above statements, choose the most appropriate answer from the options given below:a)Both Statement I and Statement II are correct.b)Both Statement I and Statement II are incorrect.c)Statement I is correct but Statement II is incorrect.d)Statement I is incorrect but Statement II is correct.Correct answer is option 'C'. Can you explain this answer?.
Given below are two statements:Statement I:Emulsions of oil in water are unstable and sometimes they separate into two layers on standing.Statement II:For stabilisation of an emulsion, excess of electrolyte is added.In the light of the above statements, choose the most appropriate answer from the options given below:a)Both Statement I and Statement II are correct.b)Both Statement I and Statement II are incorrect.c)Statement I is correct but Statement II is incorrect.d)Statement I is incorrect but Statement II is correct.Correct answer is option 'C'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Given below are two statements:Statement I:Emulsions of oil in water are unstable and sometimes they separate into two layers on standing.Statement II:For stabilisation of an emulsion, excess of electrolyte is added.In the light of the above statements, choose the most appropriate answer from the options given below:a)Both Statement I and Statement II are correct.b)Both Statement I and Statement II are incorrect.c)Statement I is correct but Statement II is incorrect.d)Statement I is incorrect but Statement II is correct.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Given below are two statements:Statement I:Emulsions of oil in water are unstable and sometimes they separate into two layers on standing.Statement II:For stabilisation of an emulsion, excess of electrolyte is added.In the light of the above statements, choose the most appropriate answer from the options given below:a)Both Statement I and Statement II are correct.b)Both Statement I and Statement II are incorrect.c)Statement I is correct but Statement II is incorrect.d)Statement I is incorrect but Statement II is correct.Correct answer is option 'C'. Can you explain this answer?.
Solutions for Given below are two statements:Statement I:Emulsions of oil in water are unstable and sometimes they separate into two layers on standing.Statement II:For stabilisation of an emulsion, excess of electrolyte is added.In the light of the above statements, choose the most appropriate answer from the options given below:a)Both Statement I and Statement II are correct.b)Both Statement I and Statement II are incorrect.c)Statement I is correct but Statement II is incorrect.d)Statement I is incorrect but Statement II is correct.Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE.
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ample number of questions to practice Given below are two statements:Statement I:Emulsions of oil in water are unstable and sometimes they separate into two layers on standing.Statement II:For stabilisation of an emulsion, excess of electrolyte is added.In the light of the above statements, choose the most appropriate answer from the options given below:a)Both Statement I and Statement II are correct.b)Both Statement I and Statement II are incorrect.c)Statement I is correct but Statement II is incorrect.d)Statement I is incorrect but Statement II is correct.Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice JEE tests.
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