NEET
- Exam
- NEET
- Subject
- Chemistry
- Chapter
- Carboxylic Acid Derivatives
NEET · Chemistry · Carboxylic Acid Derivatives
Assertion : HCOOH has less ( pK_ a ) than ( C _ 6 H _ 5 COOH )....
Assertion : HCOOH has less () than (\mathrm{C}}_{6} \mathrm{H}}_{5} ).
Reason : In (\mathrm{C}}_{6} \mathrm{H}}_{5} \mathrm{COOH}, \mathrm{C}}_{6} \mathrm{H}}_{5}) - group shows-I effect not +R effect.
Options
- AIf both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1).
- BIf both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2).
- CIf Assertion is true statement but Reason is false, then mark (3).
- DIf both Assertion and Reason are false statements, then mark (4).
Correct answer
C. If Assertion is true statement but Reason is false, then mark (3).
Step-by-step solution
Acidic strength order (\mathrm{HCO}}_{2} \mathrm{H} \gt \mathrm{C}}_{6} \mathrm{H}}_{5} \mathrm{CO}}_{2} )
(\therefore ) order (\mathrm{HCO}}_{2} \mathrm{H} \gt \mathrm{C}}_{6} \mathrm{H}}_{5} \mathrm{CO}}_{2} ) {But (\mathrm{C}}_{6} \mathrm{H}}_{5}) - group shows +I & +R effect}
So, () order (\mathrm{HCO}}_{2} \mathrm{H} \lt \mathrm{C}}_{6} \mathrm{H}}_{5} \mathrm{CO}}_{2} )