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What volume of hydrogen gas at 273 K and...

What volume of hydrogen gas at 273 K and 1 atm. Pressure will be consumed in obtaining 21.6 g elemental boron (Atomic mass=10.8) from the reduction of boron trichloride by hrogen?

A

`89.6 L`

B

`67.2L`

C

`44.8L`

D

`22.4L`

Text Solution

Verified by Experts

The correct Answer is:
B
`2BCl_(3)+underset("at N.T.P.")underset(3xx22.4L)(3H_(2))tounderset(2xx10.8g)(2B)+6HCl`
To produced 21.6 g `(10.8xx2g)` of boron hydrogen required at S.T.P. `= 3xx22.4L = 67.2L`
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