Question:
Find the temperature from following graph so that highest amount of a gas is adsorbed
Find the temperature from following graph so that highest amount of a gas is adsorbed
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Adsorption is exothermic, so the amount adsorbed is higher at lower temperature.
Updated On: Nov 13, 2026
- 195 K
- 210 K
- 244 K
- 273 K
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept
Physical adsorption of a gas is exothermic, so it decreases as temperature increases.
Step 2: Reading the Graph
The graph shows isotherms of \(\dfrac{x}{m}\) against pressure at 195 K, 210 K, 244 K and 273 K.
The top curve is the one for 195 K at every pressure.
Step 3: Conclusion
The highest amount of gas is adsorbed at the lowest temperature, 195 K.
Final Answer:
The highest adsorption occurs at 195 K. \[ \boxed{\text{(A) }\text{195 K}} \]
Physical adsorption of a gas is exothermic, so it decreases as temperature increases.
Step 2: Reading the Graph
The graph shows isotherms of \(\dfrac{x}{m}\) against pressure at 195 K, 210 K, 244 K and 273 K.
The top curve is the one for 195 K at every pressure.
Step 3: Conclusion
The highest amount of gas is adsorbed at the lowest temperature, 195 K.
Final Answer:
The highest adsorption occurs at 195 K. \[ \boxed{\text{(A) }\text{195 K}} \]
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