Consider the following reactions at 1000oC-A Zns-12O2g- ZnOs- - G o -360kJ mol -1B Cgraphite-12O2g- COg- G o -460kJ mol -1Choose the correct statement at 1000oC-

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Consider the ...

Question

Consider the following reactions at $1000^{o} C$ ;
(A) $Z n (s) + \frac{1}{2} O_{2} (g) \to Z n O (s)$ ; $Δ G^{o} = - 360 k J {m o l}^{- 1}$
(B) $C_{g r a p h i t e} + \frac{1}{2} O_{2} (g) \to C O (g) Δ G^{o} = - 460 k J {m o l}^{- 1}$
Choose the correct statement at $1000^{o} C$ :

zinc can be oxidised by carbon monoxide

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Z n O

can be reduced by graphite

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both (a) and (b) are true

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both (a) and (b) are false

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carbon monoxde can be reduced by zinc

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1000^{\circ} C

i . Z n (s) + \frac{1}{2} O_{2} (g) \to Z n O (s); Δ G = - 360 KJ/mol

i i . C (s) + \frac{1}{2} O_{2} (g) \to C O (s); Δ G = - 460 KJ/mol

^{\circ} C

Z n_{(s)} + 1 / 2 O_{2 (g)} ⟶ Z n O_{(s)}, Δ G^{\circ} = - 360 k J m o l^{- 1}

C_{(s)} + 1 / 2 O_{2 (g)} ⟶ C O_{(g)}, Δ G^{\circ} = - 460 k J m o l^{- 1}

^{\circ} C

1000^{0} C

Z n_{(} s) + \frac{1}{2} \to Z n O_{(s)}; △ G^{0} = - 360 k J m o l^{- 1}

C_{(1)} + \frac{1}{2} O_{2 (g)}; △ G^{0} = - 460 k J m o l^{- 1}

A l_{2} O_{3}

Z n O

Which substance is reduced in the fiven reaction?

ZnO + C → Zn + CO

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