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Question
Which statement(s) are correct about colloidal state?
Which statement(s) are correct about colloidal state?
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Solution
The correct options are
A The sol particles acquire charge due to preferential adsorption of ions.
B The stability of protein sol is minimum at its isoelectric point.
C Sol particles do not show cataphoresis at isoelectric point.
D The stability of protein sol is due to the presence of charge as well as their extensive solvation nature.
When two or more ions are present in the dispersion medium, then the colloidal particles absorb preferentially positive or negative ions present in the dispersion medium.
Isoelectric point (pI or IEP) is the pH of a solution or dispersion at which the net charge on the molecules or colloidal particles is zero.
Most globular proteins have minimum solubility at or near their isoelectric point.
The stability of the protein solution is normally because of the presence of charge as well as their extensive solvation nature.
So all the statements are correct.
A The sol particles acquire charge due to preferential adsorption of ions.
B The stability of protein sol is minimum at its isoelectric point.
C Sol particles do not show cataphoresis at isoelectric point.
D The stability of protein sol is due to the presence of charge as well as their extensive solvation nature.
When two or more ions are present in the dispersion medium, then the colloidal particles absorb preferentially positive or negative ions present in the dispersion medium.
Isoelectric point (pI or IEP) is the pH of a solution or dispersion at which the net charge on the molecules or colloidal particles is zero.
Most globular proteins have minimum solubility at or near their isoelectric point.
The stability of the protein solution is normally because of the presence of charge as well as their extensive solvation nature.
So all the statements are correct.
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