A 35.6 g sample of ethanol (C
2H
5OH) is burned in a bomb calorimeter according to the following reaction. If the temperature rose from 35.0 °C to 76.0°C and the heat capacity of the calorimeter is 23.3 kJ °C
-1, what is the value of D
rU°? The molar mass of ethanol is 46.07 g mol
-1.
C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(g) | DrU° = ? |
◦ -8.09 × 10
3 kJ mol
-1◦ -9.55 × 10
3 kJ mol
-1◦ +9.55 × 10
3 kJ mol
-1◦ -1.24 × 10
3 kJ mol
-1◦ +1.24 × 10
3 kJ mol
-1