Ionic compounds chemical nomenclature

The aim of chemical nomenclature is to be simple but unambiguous. Ionic and molecular compounds use different procedures so it is important first to identify the type of compound. To name an ionic compound, we name the ions present and then combine the names of the ions. 

The word nomenclature simply means naming. You have already seen some chemical formulas such as NaCl, H20, and H2S04. There are many times when having names for chemicals is more convenient than having their formulas. Chemical naming falls into two main groups that for ionic compounds formed of positive and negative ions, and that for nonionic compounds. 

Naming ionic compounds Chemical nomenclature is a systematic way of naming compounds. Now that you are famihar with writing chemical formulas, you will use the following general rules in naming ionic compounds when their formulas are known. 

The nomenclature for molecular compounds is much less complicated than for ionic compounds. Molecular compounds are formed from covalently bonded nonmetallic elements. The formula for a molecule represents a stable unit of atoms, unlike a formula for an ionic compound, which only represents the simplest whole number ratio of ions. As a result, molecular formulas cannot be simplified like formulas for ionic compounds. An example would be hydrogen peroxide, H O. Although the formula could be reduced to HO, this would be inappropriate because 11,0, is a molecule. Changing the structure to HO would change the chemical composition. 

First we will use the nomenclature rules that we presented in Chapter 2 to write formulas for all of the compounds involved. Then we construct a balanced chemical equation using complete formula units. Next we must identify any ionic compounds that are present, and we write them as dissociated ions to give the total ionic equation. Finally, to obtain the net ionic equation, we must eliminate any spectator ions from both sides of the equation. 

Chemical Nomenclature The names of simple ionic compounds, molecular compounds, and acids can all be written by examining their chemical formula. The nomenclature flowchart (Figure 5.16) shows the basic procedure for determining these names. Chemical Nomenclature Since there are so many compounds, we need a systematic way to name them. By learning these few simple rules, you will be able to name thousands of different compounds. The next time you look at the label on a consumer product, try to identify as many of the compounds as you can by examining their names. 

Chemical nomenclature is the systematic naming of compounds based on their formulas or structures. Rules are given for naming ionic compounds, binary molecular compounds, acids, and hydrates. 

Names of Ionic Compounds Flydrates Summary of the Nomenclature System Common Names of Chemicals... 

A nonpolar mobile phase passing through a packed column that contains a polar stationary phase defines normal-phase HPLC (NP-HPLC). For example, if -hexane comprises the mobile-phase and silica gel is used for the stationary phase, separations of nonpolar organic analytes as shown in Fig. 4.1 is accomplished. With respect to neutral organic compounds, the polar and ionic domains cannot be reached by NP- HPLC. NP-HPLC was the first high-pressure form of liquid chromatography to be developed. If the stationary phase could be made hydrophobic by chemical treatment and the mobile phase made more polar, a reversal of mobile/stationary-phase polarities could be achieved. Like it or not, we are stuck with this nomenclature RP-HPLC has certainly extended the range of analyte polarity that... 

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