The quantity of energy associated with the formation of one mole of a substance from its elements (in their standard states). The standard states (at SATP) of most elements are solid, except for the gaseous diatomic molecules, H2, O2, N2, F2, Cl2, and the two liquid elements Hg and Br2. These energies can be looked…
Materials: Lab apron Eye protection Centigram or analytical balance 8-10g or unknown salt Water Thermometer 3 Styrofoam cups (calorimeter) 100 mL cylinder Filter paper Procedure: Safety equipment, including goggles were put on. 8-10g of an unknown salt on a filter paper was obtained from the teacher. The mass of the salt and filter paper were…
The quantity of energy associated with the formation of one mole of a substance from its elements (in their standard states). The standard states (at SATP) of most elements is solid, except for the gaseous diatomic molecules, H2, O2, N2, F2, Cl2, and the two liquid elements Hg and Br2. These energies can be looked…
Enthalpy change is also known as heat of reaction, enthalpy of reaction, change in heat content. Enthalpy = total energy of a system It is impossible to measure the total kinetic and potential energy of a system, so instead we measure enthalpy change (using calorimeters). Enthalpy Change – is the energy absorbed from or released…