Q10Multiple choice
On the basis of thermochemical equations (a), (b) and (c), find out which of the algebric relationships given in options
- (i)to
- (ii)x=y–z
- (iii)x=y+z (iv) y = 2z – x
- (iv)is correct. –1 (a) C (graphite) + O2 (g) → CO2 (g) ; ∆rH = x kJ mol 1 –1 (b) C (graphite) + O (g) → CO (g) ; ∆rH = y kJ mol 2 2 1 –1 (c) CO (g) + O (g) → CO2 (g) ; ∆rH = z kJ mol 2 2 (i) z=x+y
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(iii) x=y+z (iv) y = 2z – x