17 Chemistry Tutorials

These Chemistry tutorials are written by experienced educators, all of whom also offer private tutoring lessons. Get the Chemistry help you need, whether through these tutorials or through private tutoring lessons.

Easy Understanding About Theories Of Acids & Bases

An acid always reacts with a base. There are 3 theories of Acids and Bases: 1. Arrhenius Theory is related to hydrogen ions,H+ as acid and hydroxide ions,OH-as base. 2. Bronsted-Lowry Theory is related to proton,H+,donor as acid and any proton acceptor as a base like OH-, H2O,Cl-,NH3,etc. 3.Lewis Acid-Base Theory is related electron pair…

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WAYS TO ACHIEVE 100% SUCCESS! BE DETERMINED IN YOUR GOAL!  • Create aspiration and enthusiasm to study. .• Expert teacher in school will create interest in student’s mind in a subject. Let him plan for that before taking class. • Expert tutor will help students for home assignment and increase depth of knowledge in the…

Easy Ways Of Identifying Oxidation-Reduction Reactions

In an oxidation reaction, the change in charge will increase. Example: Iron turns to Fe(II) ion Fe→ Fe(2+)+ 2e Only Reducing agent will undergo oxidation. In a Reduction reaction a reactant will decrease in charge. Example: Fe(2+)+ 2e → Fe Fe(II) ion turns to Fe atom. Only Oxidizing agent will undergo reduction. NOTE:Both oxidation occurs…


this is a revision for organic chemistry ALKANES general formula:CnH2N+2 they are saturated compounds,and the molecule of their compounds contain single bonds between the carbon atoms in their chains. for example: As the length of hydrocarbon chain increases the length of the vander waal forces also increases changing their physical states( from gas to liquid)…

Stereochemistry: How to determine Chirality of a Molecule

There are priority rules in order to determine whether a molecule is of the R-configuration or S-configuration. 1) Atoms with the higher atomic number have higher priority. For example, Nitrogen has a higher atomic number than Carbon so it gets priority. 2) If a decision cannot be reached (because both atoms attached to the central…

Using the Ideal Gas Law to determine the molecular weight of an unknown compound

Suppose you have a gas that you can reliably assume is an ideal gas, and that there is only one species present. You know the mass of the sample, and you have it confined at a known pressure, volume, and temperature. What is the molecular weight of the unknown gas?

Le Chatelier’s Principle and Endo/Exothermic Reactions

Adding or removing a product or reactant will shift the equilibrium of a reaction by Le Chatelier’s Principle. Adding or removing energy will have the same effect. Endothermic reactions take in energy, while exothermic reactions give off heat. Therefore, in an endothermic reaction, energy can be thought of as a reactant, and in an exothermic,…

Some pH, pOH, [H+], [OH-], and Kw Relationships

When dealing with acid/base chemistry some of the quantities can seem difficult to comprehend and even redundant. Try your hand at some of these relations!

Molarity of Pure Substances

Molarity as well as the units that make up molarity are used indefinitely in chemistry, so fully understanding the concept is crucial. Some people do not realize that the idea of molarity extends past solutions and can be applied to pure substances (only the solvent). It is fun to get the science community thinking!

In-Depth Gas Law Problem

Gas law problems are very useful in everyday life, so it is nice to be able to navigate them and all their possibilities.