The beauty of these worksheets lies in their logic. To find the answers, a student must account for three critical variables: The amount of "stuff" absorbing the energy. Specific Heat Capacity (
To arrive at these answers, the following steps are standard: Firgelli Automations for water/solutions). Enthalpy Change ( cap delta cap H calorimetry worksheet 2 answers chemsheets
| Question | Substance/Reaction | Experimental ( \Delta H ) (kJ mol⁻¹) | |----------|--------------------|----------------------------------------| | 1 | Combustion of methanol | –715 | | 2 | Combustion of ethanol | –1370 (depending on data) | | 3 | Combustion of propan-1-ol | –2000 (approx) | | 4 | Neutralization (strong acid + strong base) | –57.2 | | 5 | Dissolution of NH₄NO₃ | +26 (endothermic) | | 6 | Combustion of hexane | –4160 (lower than true due to heat loss) | The beauty of these worksheets lies in their logic
When 0.5 g of magnesium is added to 100 mL of 1 M HCl, the temperature of the solution increases from 22.0°C to 28.0°C. Calculate the enthalpy change for the reaction. Enthalpy Change ( cap delta cap H |