1.

What volume of hydrogen gas atandpressure will be consumed in obtainingof elemental boron (atomic massfrom the reduction of boron trichloride with hydrogen :

Answer»

Solution :`2BCl_(3) + 3H_(2) RARR 2B + 6HCl`
`10.8 xx 2 G "boron" = 3 xx 22.4 LH_(2)`
`:. 21.6 g "boron" = 3 xx 22.4 xx 21.6/2xx10.8 = 67.2 LH_(2)`


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