Calorimetry

Calorimetry is a technological process of WHAT

Measuring energy CHANGES using an ISOLATED system

The isolated system used to determine the heat involved in a phase change or in a chemical reaction is called a WHAT

Calorimeter

System = WHAT

Surroundings = WHAT

System = Chemical reaction

Surroundings = water

Calorimetry is based on the WHAT… energy is transferred from WHAT objects to WHAT objects until WHAT is reached

Calorimetry is based on the FIRST AND SECOND LAWS OF THERMODYNAMICS… energy is transferred from HOTTER objects to COOLER objects until THERMAL EQUILIBRIUM is reached

Is is assumed that NO ENERGY is WHAT by the system except for the energy required or released by the WHAT

Is is assumed that NO ENERGY is GAINED or LOST by the system except for the energy required or released by the CHEMICAL CHANGE

calculations are based on WHAT

The Principal of Heat Transfer

Equation

Hg = Hl

water = mcΔT

RXN = nH

nH = mcΔT (vice versa)

exothermic = Heat lost

Endothermic = Heat gained

Variables for Calorimetry

Responding:

Manipulated:

Controlled:

Variables for Calorimetry

Responding: Final temperature

Manipulated: Type of compound

Controlled: Set up, Type of water, calorimetry