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The isoelectric-point of a colloidially dispersed material is the pH value at which
- a)the dispersed phase migrate in an electric field.
- b)the dispersed phase does not migrate in an electric field.
- c)the dispersed phase has pH equal to 7.
- d)the dispersed phase has pH equal to zero.
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
The isoelectric-point of a colloidially dispersed material is the pH v...
Explanation:
Isoelectric-point (pI) is the pH value at which the net charge on a colloidal particle becomes zero. At this point, the colloidal particles do not migrate in an electric field. The pI is a characteristic property of a colloidal material and varies with the nature of the dispersed phase.
The concept of isoelectric point is important in the fields of chemistry, biochemistry, and material science, as it helps to understand the behavior of colloidal particles in different environments.
The pI is determined by the nature of the surface of the colloidal particles. If the surface of the particle has acidic groups, the pI will be at a lower pH, and if the surface has basic groups, the pI will be at a higher pH.
The pH dependence of the charge on the colloidal particles is due to the dissociation of surface groups, which leads to the formation of charged species. At pH values below the pI, the surface of the particles becomes positively charged, while at pH values above the pI, the surface becomes negatively charged.
The pI can be determined experimentally by measuring the zeta potential of the colloidal particles as a function of pH. The zeta potential is a measure of the electrostatic potential at the surface of the particle and is related to the net charge on the particle.
Conclusion:
In conclusion, the isoelectric-point of a colloidially dispersed material is the pH value at which the dispersed phase does not migrate in an electric field. This is due to the fact that the net charge on the particles becomes zero at this point, and there is no electrostatic interaction with the electric field. The determination of the pI is important in understanding the behavior of colloidal particles in different environments and can be experimentally determined by measuring the zeta potential as a function of pH.
Isoelectric-point (pI) is the pH value at which the net charge on a colloidal particle becomes zero. At this point, the colloidal particles do not migrate in an electric field. The pI is a characteristic property of a colloidal material and varies with the nature of the dispersed phase.
The concept of isoelectric point is important in the fields of chemistry, biochemistry, and material science, as it helps to understand the behavior of colloidal particles in different environments.
The pI is determined by the nature of the surface of the colloidal particles. If the surface of the particle has acidic groups, the pI will be at a lower pH, and if the surface has basic groups, the pI will be at a higher pH.
The pH dependence of the charge on the colloidal particles is due to the dissociation of surface groups, which leads to the formation of charged species. At pH values below the pI, the surface of the particles becomes positively charged, while at pH values above the pI, the surface becomes negatively charged.
The pI can be determined experimentally by measuring the zeta potential of the colloidal particles as a function of pH. The zeta potential is a measure of the electrostatic potential at the surface of the particle and is related to the net charge on the particle.
Conclusion:
In conclusion, the isoelectric-point of a colloidially dispersed material is the pH value at which the dispersed phase does not migrate in an electric field. This is due to the fact that the net charge on the particles becomes zero at this point, and there is no electrostatic interaction with the electric field. The determination of the pI is important in understanding the behavior of colloidal particles in different environments and can be experimentally determined by measuring the zeta potential as a function of pH.
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The isoelectric-point of a colloidially dispersed material is the pH v...
At isoelectric point there is no migration of dispersed phase in an electric field.
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The isoelectric-point of a colloidially dispersed material is the pH value at whicha)the dispersed phase migrate in an electric field.b)the dispersed phase does not migrate in an electric field.c)the dispersed phase has pH equal to 7.d)the dispersed phase has pH equal to zero.Correct answer is option 'B'. Can you explain this answer?
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The isoelectric-point of a colloidially dispersed material is the pH value at whicha)the dispersed phase migrate in an electric field.b)the dispersed phase does not migrate in an electric field.c)the dispersed phase has pH equal to 7.d)the dispersed phase has pH equal to zero.Correct answer is option 'B'. 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 The isoelectric-point of a colloidially dispersed material is the pH value at whicha)the dispersed phase migrate in an electric field.b)the dispersed phase does not migrate in an electric field.c)the dispersed phase has pH equal to 7.d)the dispersed phase has pH equal to zero.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The isoelectric-point of a colloidially dispersed material is the pH value at whicha)the dispersed phase migrate in an electric field.b)the dispersed phase does not migrate in an electric field.c)the dispersed phase has pH equal to 7.d)the dispersed phase has pH equal to zero.Correct answer is option 'B'. Can you explain this answer?.
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