Which of the following has the same value as -f H- - COa- 1 - 2 -f H- CO2b- 1 - 2 -c H- graphitec- -f H- CO2 - -f H- graphited- -c H- graphite - - c H- CO-

The correct option is B dAs we know, C(graphite) + O_2(g) → CO_2(g) ; Δ _cH =x kJ ................1 CO + 1/2 O_2(g) → CO_2(g) ; #160; #160; Δ ...

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Hess' Law

Which of the ...

Question

Which of the following has the same value as $Δ_{f} H^{⊖}$ , $C O$
a. $\frac{1}{2} Δ_{f} H^{⊖} (C O_{2})$
b. $\frac{1}{2} Δ_{c} H^{⊖} (g r a p h i t e)$
c. $Δ_{f} H^{⊖} (C O_{2}) - Δ_{f} H^{⊖} (g r a p h i t e)$
d. $Δ_{c} H^{⊖} (g r a p h i t e) - Δ_{c} H^{⊖} (C O) ?$

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Δ_{f} H^{⊖}

C O

Δ_{c} H^{⊖} (g r a p h i t e) - Δ_{c} H^{⊖} (C O)

Δ_{f} H

Δ_{f} H

Δ H_{t r a n s i t i o n}

Δ_{f} H^{\circ} (C O_{2}, g) = - 75 k C a l / m o l

Δ_{f} H^{\circ} (C O, g) = - 25 k C a l / m o l

C O

C O_{2}

O_{2}

C H_{3} O H

C H_{3} O H (l) + \frac{3}{2} O_{2} (g) \to C O_{2} (g) + 2 H_{2} O (l); Δ_{r} H^{⊖} = - 726 k J m o l^{- 1}

C (g) + O_{2} (g) \to C O_{2} (g); Δ_{c} H^{⊖} = - 393 k J m o l^{- 1}

H_{2} (g) + \frac{1}{2} O_{2} (g) \to H_{2} O (l); Δ_{f} H^{⊖} = - 286 k J m o l^{- 1}

C

+ \frac{1}{2} O_{2} \to C O; Δ H = - 110.5

C O + \frac{1}{2} O_{2} \to C O_{2}; Δ H = - 283.2

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

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