Chem Project

Topics that I find hard:

1.Stoichiometry

2. Hess's Law

3. Gibb's Free Energy

Stoiciometry: the calculation of quantitative relationships of the reactants and products in chemical reactions.

Hess's Law: The enthalpy change for a change is the same whether it takes place in one big step or in many small ones

Gibb's Free Energy: thermodynamic property that was defined in 1876 by Josiah Willard Gibbs to predict whether a process will occur spontaneously at constant temperature and pressure. Gibbs free energy G is defined as G = H - TS where H, T and S are the enthalpy, temperature, and entropy.

Example of a stoichiometry problem:

Example of a Hess's Law problem

Example of a Gibb's Free Energy problem: