On the basis of thermochemical equations (i), (ii) and(iii) , find out which of the algebric relationships given in options (a) to (d) is correct. (i) C(graphite) +O_(2)(g) rarr CO_(2)(g), Delta_(r)H = xkJ mol^(-1) (ii) C(graphite) + (1)/(2) O_(2)(g) rarr CO(g), Delta_(r)H= y kJ mol^(-1) (iii) CO(g)+(1)/(2)O_(2)(g) rarrCO_(2)(g), Delta_(r)H = z kJ mol^(-1)

On the basis of thermochemical equations (i), (ii) and(iii) , find out

1.	On the basis of thermochemical equations (i), (ii) and(iii) , find out which of the algebric relationships given in options (a) to (d) is correct. (i) C(graphite) +O_(2)(g) rarr CO_(2)(g), Delta_(r)H = xkJ mol^(-1) (ii) C(graphite) + (1)/(2) O_(2)(g) rarr CO(g), Delta_(r)H= y kJ mol^(-1) (iii) CO(g)+(1)/(2)O_(2)(g) rarrCO_(2)(g), Delta_(r)H = z kJ mol^(-1)
Answer» `Z= x+y` `x= y-z` `x=y+z` `y= 2z-x` SOLUTION :Eqn. (i) - Eqn. (ii)=Eqn. (III) ,.HENCE, `x-y = z`or `x= y + z`