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Manish Pratap Bhalla
Asked: 2022-11-05T22:05:16+05:30 In:

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)`
A. `z= x+y`
B. `x= y-z`
C. `x=y+z`
D. `y= 2z-x`

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)`
A. `z= x+y`
B. `x= y-z`
C. `x=y+z`
D. `y= 2z-x`
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1 Answer

  1. Correct Answer – c
    Eqn. (i) – Eqn. (ii)=Eqn. (iii) ,.Hence, `x-y = z`or `x= y + z`

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