A 35.6 g sample of ethanol (C2H5OH) is burned in a bomb calorimeter, according to the following reaction. If the temperature rose from 35.0 to 76.0°C and the heat capacity of the calorimeter is 23.3 kJ/°C, what is the value of DH°rxn? The molar mass of ethanol is 46.07 g/mol.

Question

aaronq · Answer

find the heat produced first, using: $q=C*\Delta T$, where $Delta T=T_f-T_i$

then divide by the amount of moles of ethanol, to get the standard value $^{circ}$ which means "per mole".

aaronq · Answer

circ=$^o$