Discussion
Statement I: Chemical absorption maintains a higher driving force than physical absorption.
Statement II: Reacting the dissolved gas keeps its concentration in the liquid near zero.
In the light of the above statements, choose the correct answer.
Answer: C
Correct answer: Both Statement I and Statement II are correct
Both are true and the second explains the first. The rate of absorption depends on the difference between the actual and equilibrium concentrations at the interface. In physical absorption the dissolved gas accumulates and that difference shrinks; in chemical absorption a reagent consumes it as fast as it dissolves, holding the free concentration near zero and the driving force near its maximum. This is why sulphur dioxide is scrubbed with an alkaline slurry rather than with water.
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development