Given that-Cgraphite- O2g - CO2g- - H - x kJ mol -1Cgraphite- 12O2g - COg- - H - y kJ mol -1COg- 12O2g- CO2g- - H - z kJ mol -1Based on the given thermochemical equations- find out which one of the following algebric relationships is correct-

C(graphite)+ O_2(g) → nbsp; CO_2(g) Δ H = x kJ mol ^ 1 C(graphite)+ 12O_2(g) → nbsp; CO_2(g) Δ H = y kJ mol ^ 1 CO(g)+ 12O_2(g) → ...

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Heat of Reaction

Given that:Cg...

Question

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

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

$C O (g) + \frac{1}{2} O_{2} (g) \to C O_{2} (g), Δ H = z k J m o l^{- 1}$
Based on the given thermochemical equations, find out which one of the following algebric relationships is correct?

z = x + 2 y

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z = x - y

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z = x + y

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2 z = x - y

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Solution

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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}

Δ H

k J

C (g) + O_{2} (g) \to C O_{2} (g)

H_{2} O (g) + C (g) \to C O (g) + H_{2} (g)

Δ H = + 131 k J

C O (g) + \frac{1}{2} O_{2} (g) \to {C O}_{2} (g)

Δ H = - 282 k J

H_{2} (g) + \frac{1}{2} O_{2} (g) \to H_{2} O (g)

Δ H = - 242 k J

(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 (s) + O_{2} (g) \to C O_{2}, (g);

Δ H = - 94.3

C O (g) + \frac{1}{2} O_{2} (g) \to C O_{2} (g);

Δ H = - 67.4

O_{2} (g) \to 2 O (g);

Δ H = 117.4

C O (g) \to C (g) + O (g);

Δ H = 230.6

Δ H

C (s) \to C (g)

C O (g)

C O_{2} (g)

Δ H = - 110

Δ H = - 393 k J m m o l^{- 1}

(Δ H)

m o l^{- 1}

C O (g) + \frac{1}{2} O_{2} (g) \to C O_{2} (g)

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