Q. 10

On the basis of t A. z = x + y

B. x = y – z

C. x = y + z

D. y = 2z – x

Answer :

Reason:

C (graphite) + O2 (g) CO2 (g); ΔrH = x kJ mol–1..…(i)


C (graphite) + O2 (g) CO (g);ΔrH = y kJ mol 1……(ii)


CO (g) + O2 (g) CO2 (g);ΔrH = z kJ mol–1 ……(iii)


Adding (ii) and (iii) will be result in equation (I)


Which means that y + z = x

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