AIIMS 2004
- Exam
- AIIMS
- Year
- 2004
- Subject
- Chemistry
- Chapter
- Electrochemistry
AIIMS 2004 · Chemistry · Electrochemistry
Assertion : Copper metal gets readily corroded is an acidic aqueous...
Assertion : Copper metal gets readily corroded is an acidic aqueous solution.
Reason : Free energy change for this process is positive.
Options
- AIf both assertion and reason are true and reason is the correct explanation of assertion
- BIf both assertion and reason are true but reason is not the correct explanation of assertion
- CIf assertion is true but reason is false
- DIf both assertion and reason are false.
Correct answer
D. If both assertion and reason are false.
Step-by-step solution
Copper corrodes at negligible rate in unpolluted air, water and deaerated non-oxidising acids. Pure copper and the high copper alloys can be considered to exhibit similar resistance to most Corrosive environments. They possess excellent resistance to atmospheric environments. (corrossion is a spontaneous process for which free energy change must be negative.