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According to the Debye-Huckel limiting law if the concentration of a dilute aqueous solution of KCl is increased 4-fold, the value of ln γ± (γ± is the molal mean ionic activity coefficient) will:
- a)Decrease by a factor of 2
- b)Increase by a factor of 2
- c)Decrease by a factor of 4
- d)Increase by a factor of 4
Correct answer is option 'A'. Can you explain this answer?
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According to the Debye-Huckel limiting law if the concentration of a d...
Debye-Hückel limiting law is a theoretical model that predicts the effect of electrolyte concentration on the activity coefficients of ions in a dilute solution. The law states that the logarithm of the mean ionic activity coefficient (ln γ±) is proportional to the square root of the ionic strength (I) of the solution.
ln γ± ∝ - A√I
Where A is a constant known as the Debye-Hückel parameter. The Debye-Hückel parameter depends on the size and charge of the ions in the solution, as well as the dielectric constant of the solvent.
Now let's consider the effect of increasing the concentration of KCl in a dilute aqueous solution. If the concentration of KCl is increased by four-fold, the ionic strength of the solution will also increase four-fold. As a result, the value of ln γ± will decrease by a factor of two. This is because the Debye-Hückel parameter is constant for a given solvent and ions, and the only factor that changes is the square root of the ionic strength.
Therefore, the correct answer is option A, i.e., the value of ln γ± will decrease by a factor of 2 if the concentration of a dilute aqueous solution of KCl is increased four-fold.
ln γ± ∝ - A√I
Where A is a constant known as the Debye-Hückel parameter. The Debye-Hückel parameter depends on the size and charge of the ions in the solution, as well as the dielectric constant of the solvent.
Now let's consider the effect of increasing the concentration of KCl in a dilute aqueous solution. If the concentration of KCl is increased by four-fold, the ionic strength of the solution will also increase four-fold. As a result, the value of ln γ± will decrease by a factor of two. This is because the Debye-Hückel parameter is constant for a given solvent and ions, and the only factor that changes is the square root of the ionic strength.
Therefore, the correct answer is option A, i.e., the value of ln γ± will decrease by a factor of 2 if the concentration of a dilute aqueous solution of KCl is increased four-fold.
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According to the Debye-Huckel limiting law if the concentration of a dilute aqueous solution of KCl is increased 4-fold, the value of ln γ± (γ± is the molal mean ionic activity coefficient) will:a)Decrease by a factor of 2b)Increase by a factor of 2c)Decrease by a factor of 4d)Increase by a factor of 4Correct answer is option 'A'. Can you explain this answer?
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According to the Debye-Huckel limiting law if the concentration of a dilute aqueous solution of KCl is increased 4-fold, the value of ln γ± (γ± is the molal mean ionic activity coefficient) will:a)Decrease by a factor of 2b)Increase by a factor of 2c)Decrease by a factor of 4d)Increase by a factor of 4Correct answer is option 'A'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about According to the Debye-Huckel limiting law if the concentration of a dilute aqueous solution of KCl is increased 4-fold, the value of ln γ± (γ± is the molal mean ionic activity coefficient) will:a)Decrease by a factor of 2b)Increase by a factor of 2c)Decrease by a factor of 4d)Increase by a factor of 4Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for According to the Debye-Huckel limiting law if the concentration of a dilute aqueous solution of KCl is increased 4-fold, the value of ln γ± (γ± is the molal mean ionic activity coefficient) will:a)Decrease by a factor of 2b)Increase by a factor of 2c)Decrease by a factor of 4d)Increase by a factor of 4Correct answer is option 'A'. Can you explain this answer?.
According to the Debye-Huckel limiting law if the concentration of a dilute aqueous solution of KCl is increased 4-fold, the value of ln γ± (γ± is the molal mean ionic activity coefficient) will:a)Decrease by a factor of 2b)Increase by a factor of 2c)Decrease by a factor of 4d)Increase by a factor of 4Correct answer is option 'A'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about According to the Debye-Huckel limiting law if the concentration of a dilute aqueous solution of KCl is increased 4-fold, the value of ln γ± (γ± is the molal mean ionic activity coefficient) will:a)Decrease by a factor of 2b)Increase by a factor of 2c)Decrease by a factor of 4d)Increase by a factor of 4Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for According to the Debye-Huckel limiting law if the concentration of a dilute aqueous solution of KCl is increased 4-fold, the value of ln γ± (γ± is the molal mean ionic activity coefficient) will:a)Decrease by a factor of 2b)Increase by a factor of 2c)Decrease by a factor of 4d)Increase by a factor of 4Correct answer is option 'A'. Can you explain this answer?.
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