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Assertion (A): Chemical absorption is used for sparingly soluble gases.

Reason (R): Reacting the dissolved gas keeps its liquid-phase concentration near zero.

Select the correct answer from the options below.

  • A.A is true but R is false
  • B.A is false but R is true
  • C.Both A and R are true, and R is the correct explanation of A
  • D.Both A and R are true, but R is not the correct explanation of A

Answer: C

The driving force is maintained the whole way up the tower, which the reason explains, and a physical absorber would saturate long before. The cost is a consumed reagent and a pollutant that cannot be recovered unchanged.

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