Question

$\xrightarrow { \mathrm { H } _ { 3 } \mathrm { PO } _ { 4 } }$

+ H₂O, ¹⁸O will be in -

• A. A
• B. H₂O
• C. Both
• D. None

Answer 1

Answer: (A)

A

Answer 2

Better carbocation formation takes place at 3⁰ alcohol so O¹⁸ will be in ether.