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Calculate the amount of heat released at constant pressure when 10 moles of carbon react with 6 moles of $O_{2}$ leaving none of the reactants .
$Δ H_{combustion} C_{(graphite)} = - 390 kJ / mole Δ H_{combustion} CO (g) = - 250 kJ / mole$

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$1900 kJ$

$750 kJ$

$3900 kJ$

$2450 kJ$

answer is A.

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Detailed Solution

The reaction takes place as,

$C_{2} + O_{2} \to {CO}_{2}$

$Δ H_{combustion} C_{(graphite)} = - 390 kJ / mole Δ H_{combustion} CO (g) = - 250 kJ / mole$

In this conditions, amount of heat released,

$q = 1900 kJ$

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