Unit 6- For Weekly Challenge

Question 1

Heat capacity (Cp)

Answer 1

• is the quantity of heat needed to raise the temperature of some specific object by 1 degree celcius at constant pressure

qcal=ccal(change in temperature)

Question 1

calorimetry

Answer 1

• typically, measuring change in heat that accompanies a physical change or chemical process
• A calorimeter is used to measure the absorption or release of heat by a physical or chemical process
• In a closed system: qsystem=-qcalorimeter

Question 2

bomb calorimeter

Answer 2

• a constant-volume device used to measure the heat of a combustion reaction
• heat produced by reaction = heat gained by calorimeter

deltaH=-(qcal+qH2O)

Question 3

heat of reaction

Answer 3

• aka enthalpy of reaction (deltaHreaction)
• the heat absorbed or released by a chemical reaction

Question 4

Standard enthalpy of formation (deltaHf0)

Answer 4

• the enthalpy change of the formation reaction
• a formation reaction is the process of forming 1 mole of a substance in its standard state from its component elements in their standard states