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Borax is converted into crystalline boro...

Borax is converted into crystalline boron by the following steps :
`"Borax"overset(X)(to)H_(3)BO_(3)overset(Delta)(to)B_(2)O(3)underset(Delta)overset(Y)(to)B`
X and Y are respectively.

A

`1 kPa`

B

`10 kPa`

C

`20 kPa`

D

`22kPa`

Text Solution

Verified by Experts

The correct Answer is:
2
For reversible adiabatic expansion
`P_(f)V_(f)^(gamma)=P_(l)V_(j)^(gamma)so p_(f)=p_(i)((V_(i))/(V_(f)))^(gamma)=(57.4kPa)xx((1.0L)/(2.0L))^(1.4)=22kPa`
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