What volume of H(2) at 273 K and 1 atm w...

What volume of `H_(2)` at `273 K` and 1 atm will be consumed in obtaining `21.6 g` of elemental boron (atomic mass of `B = 10.8)` from the reduction of `BCl_(3)` with `H_(2)`.

A

(a)44.8 L

B

(b)22.4 L

C

(c )89.6 L

D

(d)67.2 L

Text Solution

Verified by Experts

The correct Answer is:

D

`2BCl_(3)+3H_(2)rarr2B+3HCl`
`:' 2xx10.8 g` boron `-= 3xx22.4 LH_(2)`
`:. 21.6 g` boron `-=(3xx22.4xx21.6)/(2xx108)=67.2 LH_(2)`

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