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on the basis of thermochemical equation ...

on the basis of thermochemical equation a,b and c, find out which of the algebraic relationships given in option a , to d . Is correct ?
a. C(graphite) ` + O_(2)(g) to CO_(2)(g), Delta_(c)H = x kJ mol^(-1)`
b. C(graphite) ` + 1/2O_(2)(g) to CO_(2)(g), Delta_(c)H = y kJ mol^(-1)`
`Co(g) + 1//2 O_(2)(g) to CO_(2)(g), Delta_(c)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
`C+O_(2)toCO_(2)(g),Delta_(r)H= xKJ mol^(-1) ......(i)`
C (graphite) `+1/2O_(2)(g)to CO(g),Delta_(r)H= y KJ mol^(-1).....(ii)`
`CO(g)+1/2O_(2)(g)toCO_(2)(g),Delta_(r)H=z kJ mol^(-1) ...... (iii)` ltbr gt `(i)=(ii)+(iii)`
x=y+z
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