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The following are some statements about ...

The following are some statements about adsorption of solutes from the solutions.
A) Increase in the surface area of the adsorbent increases the extent of adsorption.
B) Increase in temperature decreases the extent of adsorption.
C) The extent of adsorption (x/m) is related to the molar concentration of solution ( c) is given by `x//m = k.c^(1//n)`
The correct combination is 

A

only (A) and (C)

B

only (B) and (C )

C

only (A) and B

D

all are correct

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the statements about adsorption of solutes from solutions, we will evaluate each statement one by one. ### Step-by-Step Solution: 1. **Evaluate Statement A:** - **Statement:** "Increase in the surface area of the adsorbent increases the extent of adsorption." - **Analysis:** Adsorption is a surface phenomenon, meaning that the greater the surface area of the adsorbent, the more area is available for the adsorbate to adhere to. Therefore, an increase in surface area will indeed lead to an increase in the extent of adsorption. - **Conclusion:** This statement is **correct**. 2. **Evaluate Statement B:** - **Statement:** "Increase in temperature decreases the extent of adsorption." - **Analysis:** Generally, adsorption is an exothermic process. Increasing the temperature typically provides energy that can disrupt the interactions between the adsorbate and the adsorbent, leading to a decrease in the extent of adsorption. Thus, this statement is also **correct**. - **Conclusion:** This statement is **incorrect**. 3. **Evaluate Statement C:** - **Statement:** "The extent of adsorption (x/m) is related to the molar concentration of solution (c) is given by x/m = k.c^(1/n)." - **Analysis:** This statement describes the relationship between the extent of adsorption (x/m) and the concentration of the solute (c). The equation is a form of the adsorption isotherm, which is valid under certain conditions. It indicates that the extent of adsorption is dependent on the concentration of the solute, and the parameters k and n are constants that depend on the system. - **Conclusion:** This statement is **correct**. ### Final Evaluation: - **Correct Combination:** Based on the analysis, the correct combination of statements is: - A) Correct - B) Incorrect - C) Correct Thus, the correct answer is that only statements A and C are correct.
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