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Fluoro carbon polymers can be made by fl...

Fluoro carbon polymers can be made by fluorinationg polythene.
(i) `(CH_(2))_(n) + 4n Co F_(3) rarr (CF_(2))_(n) + 2 nHF + 4 nCoF_(2)`
Where `n` is large integer. The `CoF_(3)` can be regenarted by the above reaction.
(ii) `2CoF_(2) + F_(2) rarr 2CoF_(3)`
If the `HF` formed in reactionn (i) cannot be reused, calculate the weight of `F_(2)` consumed by `1.0 g` of `(CF_(2))_(n)` produced.

A

`1.0 g`

B

`1.26 g`

C

`0.76 g`

D

`1.5 g`

Text Solution

Verified by Experts

The correct Answer is:
C
If `4nCoF_(3)` yields `4nCoF_(2)`, `4nF` atoms are consumed. Saving `2 nF` atoms by recovery of the `F` from `HF` reduces the comsumption by half.
Hence, `(1.52)/(2) = 0.76 g` of `F_(2)` is required.
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