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On the basic of thermochemical equations...

On the basic of thermochemical equations (I),(II)and (III), Find out which of the algebraic relationships given in options (a)to (d) is correct ?
(I)`C("graphite")+O_(2)(g)to CO_(2)(g),`
`Delta_(r)H=XKJmol^(-1)`
(II)`C("graphite")+(1)/(2)O_(2)(g)toCO(g),`
`Delta_(r)H=yKJ mol^(-1)`
`(III) CO(g)+(1)/(2)O_(2)(g)toCO_(2)(g), Delta_(r)H=zKJ mol^(-1)`

A

`z= x+y`

B

`x= y-z`

C

`x=y+z`

D

`y= 2z-x`

Text Solution

Verified by Experts

The correct Answer is:
c
Eqn. (i) - Eqn. (ii)=Eqn. (iii) ,.Hence, `x-y = z`or `x= y + z`
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