Question:
Dynamic Vapour Sorption (DVS) isotherm is a plot of A versus B
Dynamic Vapour Sorption (DVS) isotherm is a plot of A versus B
Updated On: Nov 13, 2025
- A - Crystallization Peak Energy (J/g) B - Percentage Relative Humidity
- A - Percentage Change in Mass B - Percentage Relative Humidity
- A Crystallization Peak Energy (J/g) B- Amorphous Content
- A - Crystallization Peak Energy (J/g) B - Percentage Change in Mass
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The Correct Option is B
Solution and Explanation
Dynamic Vapour Sorption (DVS) is a technique used to analyze how a sample material interacts with water vapor. This is particularly useful in fields like material science and pharmaceuticals for determining the properties of a material concerning humidity.
A DVS isotherm is a plot that shows the relationship between the change in mass of a material and the percentage of relative humidity the material is exposed to. Let's analyze the options given:
- Option 1: Crystallization Peak Energy (J/g) vs. Percentage Relative Humidity
Reason: This is incorrect since DVS focuses on the change in mass, not energy peaks. - Option 2: Percentage Change in Mass vs. Percentage Relative Humidity
Reason: This is the correct relationship. DVS measures how much the mass of a material changes (often due to water absorption or desorption) as the relative humidity changes. Hence, this plot shows the percentage change in mass against the percentage of relative humidity. - Option 3: Crystallization Peak Energy (J/g) vs. Amorphous Content
Reason: This does not relate to DVS isotherms which are concerned with mass and humidity, not amorphous content or peak energy. - Option 4: Crystallization Peak Energy (J/g) vs. Percentage Change in Mass
Reason: This is not applicable to DVS. Although mass change is relevant, DVS focuses on humidity as the axis of comparison, not energy peaks.
Therefore, the correct answer is Option 2: A - Percentage Change in Mass, B - Percentage Relative Humidity.
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