Verified Solution • 2025–26 Session
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QJEEM21Ch695d: JEE Main 2021 Chemistry - Class 11 JEEM21Ch695d Solution: Given below are two statements : One is labelled as Assertion A …
Given below are two statements : One is labelled as Assertion A and other is labelled as Reason R.
Assertion A : The dihedral angles in H2O2 in gaseous phase is 90.2 and in solid phase is 111.5 .
Reason R : The change in dihedral angle in solid and gaseous phase is due to the difference in the intermolecular forces.
Choose the most appropriate answer from the options given below for A and R.
Assertion A : The dihedral angles in H2O2 in gaseous phase is 90.2 and in solid phase is 111.5 .
Reason R : The change in dihedral angle in solid and gaseous phase is due to the difference in the intermolecular forces.
Choose the most appropriate answer from the options given below for A and R.
Multiple Choice Options
- A A is correct but R is not correct.
- B Both A and R are correct but R is not the correct explanation of A.
- C Both A and R are correct and R is the correct explanation of A.
- D A is not correct but R is correct.
Step-by-Step Verified Solution
(a) H2O2 structure in gas phase, dihedral angle is 111.5°.
(b) H2O2 structure in solid phase at 110K, dihedral angle is 90.2°
Hence given statement (A) is not correct.
But statement (B) is correct.