Introduction to the Hybridization Let’s start first by answering this question: Why do we need the hybridization theory? Here is one answer to this. It is confirmed experimentally that the carbon atom in methane (CH4) and other alkanes has a … Read more
In this set of practice problems, we will work on molar calculations such as converting between Mass, Moles, and Number of Ions and Atoms. For all the problems, calculating the molar mass is not shown as it should be a … Read more
Calculate the cell potential for each redox reaction and determine if it is spontanesous or not: a) Zn(s) + Pb2+(aq) → Zn2+(aq) + Pb(s) b) 2Cl–(aq) + Pb2+ (aq) → Cl2(l) + Pb(s) c) Cd(s) + Pb2+(aq) → Cd2+(aq) + Pb(s) … Read more
Calculate the cell potential, Gibbs free energy change ΔG°, and equilibrium constant, K for each redox reaction: a) Zn(s) + Pb2+(aq) → Zn2+(aq) + Pb(s) b) Sn2+(aq) + Mg(s) → Sn(s) + Mg2+(aq) c) Br2(l) + 2I–(aq) → 2Br–(aq) + … Read more
Electrochemistry practice problems include questions on balancing redox reactions in acidic and basic solutions, calculating the cell potential, Eo/E at standard conditions using the table of standard reduction potentials, calculating the free energy change, ΔG based on the cell potential, … Read more
In these practice problems, we will work on determining the Lewis structures of molecules and ions. In short, remember these steps for determining the Lewis structure: 1. Write the correct skeletal structure for the molecule. * Hydrogen … Read more
In these practice problems, we will work on determining the electron and molecular geometry of molecules and ions using the VSEPR theory.
Practice problems on the colligative properties of solutions covering the freezing point depression, boiling point elevation, vapor pressure, and osmotic pressure of solutions prepared with nonelectrolytes as well as ionic compounds. The links s for the corresponding topics are given … Read more
In the previous few posts, we have been discussing acid-base titrations involving pH calculations and analyzing the titrations curves. A typical acid-base titration curve can be obtained, for example, based on the reaction of HCl and NaOH: Check … Read more
In the previous post, we discussed the titration of a weak acid, CH3CO2H with a strong base, NaOH. The main difference compared to the strong acid-base titrations was that the conjugate base of the weak acid, forming during the reaction … Read more
