Physical absorption is__________________?
Correct answer: D. Both B. and C.
- A. An irreversible phenomenon
- B. A reversible phenomenon
- C. Accompanied by evolution of heat
- D. Both B. and C.
Explanation
Physical absorption involves intermolecular dissolution rather than chemical reaction, so it is generally reversible and releases heat because absorption is usually exothermic. Chemical absorption may also release heat, but it is not readily reversible in the same physical sense.
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