KCET · Chemistry · Solutions
Out of the compounds below the vapour pressure of (B) at a particular temperature is
- A higher than that of (A)
- B lower than that of (A)
- C higher or lower than (A), depending on the size of the vessel
- D same as that of (A)
Answer & Solution
Correct Answer
(A) higher than that of (A)
Step-by-step Solution
Detailed explanation
In (A) para-nitro phenol intermolecular (between two molecules) H-bonding exists while in \((B)\) ortho- nitro phenol, intramolecular H-bonding exists.
Because of the presence of intramolecular H-bonding, the boiling point of \((B)\) is lower as compared to \((A)\) and thus, \((B)\) is more volatile, ie, has higher vapour pressure as compared to (A).
Because of the presence of intramolecular H-bonding, the boiling point of \((B)\) is lower as compared to \((A)\) and thus, \((B)\) is more volatile, ie, has higher vapour pressure as compared to (A).
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