$C_{diamond} + O_{2} \rightarrow CO_{2};\ \mathrm{\Delta}H = - 395.3\$kJ/mol $C_{graphite} + O_{2} \rightarrow CO_{2};\ \mathrm{\Delta}H = - 393.4\$kJ/mol $C_{graphite} \rightarrow C_{diamond};\ \mathrm{\Delta}H = ?$

Question

Dr. Abubacker · Accepted Answer

(d)
By (ii)-(i) C(graphite) $\rightarrow C$ (diamond);
$\mathrm{\Delta}H = - 393.4 - ( - 395.3) = + 1.9$

Q. $C_{diamond} + O_{2} \rightarrow CO_{2};\ \mathrm{\Delta}H = - 395.3\$kJ/mol $C_{graphite} + O_{2} \rightarrow CO_{2};\ \mathrm{\Delta}H = - 393.4\$kJ/mol $C_{graphite} \rightarrow C_{diamond};\ \mathrm{\Delta}H = ?$

Explanation

Reviewed by Dr. Abubacker

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