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Butane-2, 3-dione on reaction with PCl(5...

Butane-2, 3-dione on reaction with `PCl_(5)` changes its molecular mass by X amu. The value of X is

A

71

B

142

C

110

D

35.5

Text Solution

Verified by Experts

The correct Answer is:
C
`underset(("Mol mass = 86"))(CH_(3)-overset(O)overset(||)C-overset(O)overset(||)C-CH_(3))overset(PCl_(5))rarrunderset("Mol. mass = 196")(CH_(3)-overset(Cl)overset(|)underset(Cl)underset(|)C-overset(Cl)overset(|)underset(Cl)underset(|)C-CH_(3))`
Change in mol. mass = 196 - 86 = 110
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