Calorimetry, Thermo Stoichiometry, Hess's Law, Standard Enthalpy of Formation- Thermochemistry Chapter 6

What is Heat Capacity?

Heat Capacity (C) of a substance is the heat required to raise the
temperature of a given quantity of substance by 1 °C or 1 K

What is specific heat capacity?

The specific heat capacity, cs, of a substance is the heat (energy)
required to raise exactly 1 g of substance by exactly 1°C. Typical units
are 𝐉/(𝐠 ∙ °𝐂).

Specific heat is an intensive property

What is Calorimetry?

Calorimetry is the study of heat transfers by measuring the temperature
changes in the substances involved

qmetal = - qwater
(mc∆T)metal = - (mc∆T)water

What is Hess’s Law?

When chemical equations are added together to yield a different chemical equation,
the corresponding Δ
H values are added to get the Δ
H for the desired equation.
This principle is known as Hess’s law

∆Hrxn = ∆H1 + ∆H2 + ∆H3 +….