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  • Topics
    • Organic Chemistry
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Acid–Base and Solubility Equilibria

P4O10 Oxidation Numbers

by Dr. S. Gevorg

To determine the oxidation number of an atom(s) in a molecule or an ion, start with the known oxidation numbers and the rules summarized below:     Keep in mind that the summary is zero for neutral molecules and is equal to … Read more

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CH3Cl Polar or Nonpolar

by Dr. S. Gevorg
CH3Cl dipole polar

To determine if CH3Cl is polar or nonpolar, we need to first determine its geometry. This presumes knowing the rules for drawing a correct Lewis structure and you can find more details about Lewis structures here. CH3Cl has 4 + 3 … Read more

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SO2 Polar or Nonpolar

by Dr. S. Gevorg
SO2 dipole polar

To determine if SO2 (sulfur dioxide) is polar or nonpolar, we need to first determine its geometry. This presumes knowing the rules for drawing a correct Lewis structure and you can find more details about Lewis structures here. Sulfur is … Read more

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CH3+ Geometry and Hybridization

by Dr. S. Gevorg

First, we need to draw the Lewis structure of CH3+. In short, these are the steps you need to follow for drawing a Lewis structure: 1.  Write the correct skeletal structure for the molecule.         *   Hydrogen atoms are always … Read more

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IF5 Geometry and Hybridization

by Dr. S. Gevorg
IF5 Lewis structure

First, we need to draw the Lewis structure of IF5. In short, these are the steps you need to follow for drawing a Lewis structure: 1.  Write the correct skeletal structure for the molecule.         *   Hydrogen atoms are always … Read more

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C2H4 Geometry and Hybridization

by Dr. S. Gevorg

First, we need to draw the Lewis structure of C2H4. In short, these are the steps you need to follow for drawing a Lewis structure: 1.  Write the correct skeletal structure for the molecule.         *   Hydrogen atoms are always … Read more

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ClO3- Geometry and Hybridization

by Dr. S. Gevorg

First, we need to draw the Lewis structure of H2O. In short, these are the steps you need to follow for drawing a Lewis structure: 1.  Write the correct skeletal structure for the molecule.         *   Hydrogen atoms are always … Read more

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Titration of a Polyprotic Acids

by Dr. S. Gevorg
The titration curve for Polyprotic Acids

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

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Titration of a Weak Base by a Strong Acid

by Dr. S. Gevorg

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

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Titration of a Weak Acid by a Strong Base

by Dr. S. Gevorg

In the previous post, we discussed the titration of 25.0 mL of 0.100 M strong acid HCl with 0.100 M NaOH. Today, we will focus on the titration of a weak acid with strong bases, so we can still use … Read more

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