Given that-i C graphite -O2g- CO2g- - rHo-x kJ mol-1-ii C graphite -12O2g- COg- - rHo-y kJ mol-1iii COg-12O2g- CO2g- - rHo-z kJ mol-1Based on the given thermochemical equations- find out which one of the following algebraic relationships is correct-

The correct option is B x=y+z C_(graphite)+O_2(g)→ CO_2(g)Δ_rH^o=xkJ/mol . (1) C_(graphite)+12O_2(g)→ CO(g)Δ_rH^o=ykJ/mol .. (2) ...

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Hess' Law

Given that:i ...

Question

Given that:
(i) $C$ (graphite) $+ O_{2} (g) \to C O_{2} (g)$ ; $Δ_{r} H^{o} = x k J m o l^{- 1}$ .
(ii) $C$ (graphite) $+ \frac{1}{2} O_{2} (g) \to C O (g)$ ; $Δ_{r} H^{o} = y k J m o l^{- 1}$
(iii) $C O (g) + \frac{1}{2} O_{2} (g) \to C O_{2} (g)$ ; $Δ_{r} H^{o} = z k J m o l^{- 1}$
Based on the given thermochemical equations, find out which one of the following algebraic relationships is correct?

z = x + y

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x = y - z

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x = y + z

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y = 2 z - x

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(i) C_{(g r a p h i t e)} + O_{2 (g)} \to C O_{2 (g)}; △_{r} H^{\circ} = x K J m o l^{- 1} (i i) C_{(g r a p h i t e)} + \frac{1}{2} O_{2 (g)} \to C O_{(g)}; △_{r} H^{\circ} = y K J m o l^{- 1} (i i i) C O_{(g)} + \frac{1}{2} O_{2 (g)} \to C O_{2 (g)}; △_{r} H^{\circ} = z K J m o l^{- 1}

C (g r a p h i t e) + O_{2} (g) \to C O_{2} (g) Δ H = x k J m o l^{- 1}

C (g r a p h i t e) + \frac{1}{2} O_{2} (g) \to C O_{2} (g) Δ H = y k J m o l^{- 1}

C O (g) + \frac{1}{2} O_{2} (g) \to C O_{2} (g) Δ H = z k J m o l^{- 1}

C (g r a p h i t e) + O_{2} (g) \to C O_{2} (g), Δ H = x k J m o l^{- 1}

C (g r a p h i t e) + \frac{1}{2} O_{2} (g) \to C O (g), Δ H = y k J m o l^{- 1}

C O (g) + \frac{1}{2} O_{2} (g) \to C O_{2} (g), Δ H = z k J m o l^{- 1}

C_{(g r a p h i t e)} + O_{2} (g) \to C O_{2} (g); Δ_{r} H^{o} = - 393.5 k J m o l^{- 1}

H_{2} (g) + \frac{1}{2} O_{2} (g) \to H_{2} O (l); Δ_{r} H^{o} = - 285.8 k J m o l^{- 1}

C O_{2} (g) + 2 H_{2} O (l) \to C H_{4} (g) + 2 O_{2} (g); Δ_{r} H^{o} = + 890.3 k J m o l^{- 1}

Δ_{r} H^{o}

298 K

C_{(g r a p h i t e)} + 2 H_{2} (g) \to C H_{4} (g)

C_{(g r a p h i t e} + O_{2} (g) \to C O_{2} (g); Δ_{r} H^{o} = - 393.5 k J m o l^{- 1}

H_{2} (g) + \frac{1}{2} O_{2} (g) \to H_{2} O (l); Δ_{r} H^{o} = - 285.8 k J m o l^{- 1}

C O_{2} (g) + 2 H_{2} O (l) \to C H_{4} (g) + 2 O_{2} (g); Δ^{r} H 6 o = + 890.3 k J m o l^{- 1}

D e l t a_{r} H^{o}

298 K

C_{(g r a p h i t e)} + 2 H_{2} (g) \to C H_{4} (g)

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