question_answer

Calculate\[\Delta H\](in Joules) for, C (graphite)\[\to \]C (diamond), from the following data \[C(graphite)+{{O}_{2}}(g)\to C{{O}_{2}}(g);\] \[\Delta H=-393.5kJ\] \[C(diamond)+{{O}_{2}}\to C{{O}_{2}}(g);\] \[\Delta H=-395.4\text{ }kJ\]

A)  1,900                                   

B) \[-788.9\times {{10}^{3}}\]

C)  1,90,000                             

D) \[+788.9\times {{10}^{3}}\]