Chem Lab 4: Calorimetry

Specific Heat Capacity

The quantity of heat required to raise the temperature of one gram of a given substance by 1 °C (or 1 K) at constant pressure.

Calorimeters

used to measure the heat absorbed or evolved during a process

𝑞 = c𝑝 ⋅ 𝑚 ⋅ ΔT

Relationship between the heat absorbed (or released) and the change in temperature for a substance of known mass and specific heat capacity

Amounts of heat are measured in

Joules

energy transferred during the reaction is in the form of

Work and/or heat

quantity of energy is

enthalpy of reaction/the heat of reaction (delta Hrxn)

the energy change if referred to as

enthalpy of solution (Δ𝐻soln) or heat of solution

If the temperature of the solution goes up, then heat must have been

given off by the reaction (𝑞𝑟𝑥𝑛 is negative, exothermic)

If the temperature of the solution decreases, then heat must have been

absorbed by the reaction (𝑞𝑟𝑥𝑛 is positive, endothermic)

today's experiment, qmetal = -Qwater

True or false?

True

process that releases heat is called an endothermic process. True or false?

False