In the following chapter we will learn abaout the specifics of analytical chemistry . In the process we will ask and answer questions such as ’ How do we treat experimental data ? How do we ensure that our results are accurate? And how do we select an appropriate analytical technique . Before we look more closely at these and other questions we will first review some basic important to analytical chemists. Analytical chemistry is inherently a quantative science’ whether determining the concentration of a species in a solution; evaluating an equilrium constant, measuring a reaction rate or drawing correlation between a compounds structure and its reactivity. Analytical chemists make measurements and perform calculations we briefly review several important topics involving the use of number in analytical chemistry.Those who take this course have already had extensive training in stoichiometric calculations, calculations based on the weight realations of chemical formulas and equations.
Analytical chemistry is often described as the area of chemistry responsible for characterizing the composition of matter, both qualitatively (what is present) and quantitatively (how much is present).The craft of analytical chemistry is not performing a routine analysis on a routine sample (which is more appropriately methods called chemical analysis) but in improving established methods, extending exsiting methods to new types of sample, and developing new methods for measuring chemical phenomena. Analytical chemistry is the science of inventing and applying the concepts, principles, and for measuring the characteristics of chemical systems and species. Analytical chemists extending and improving the ability of chemists to make measurements on smaller samples, on more complex samples , and the species presents at lower concentrations. Pesigning a experimental procedures involves selecting an appropriate method of analysis based on established criteria, such as accuracy, precision, sensitivity and detection limits. Many problems in analytical chemistry begin with the need to identify what is present in a sample.This is the scope of qualitative analysis, examples of which include identifying the products of chemical reaction. Perhaps the most common type of problem encountered in the analytical lab is quantitative an analysis, example of typical quantitative analysis include the elemental analysis of newly synthesized compound , measuring the concentration of glucose in blood. Another important area of analytical chemistry is the development of new methods for characterizing physical and chemical properties Determination of chemical structure , equilibrium constants .In the following chapter we will learn about the species of analytical chemistry. In the process we will ask and answer questions such as “how do we treat experimental data how do we ensure that our results are accurate? how do we obtain a representative sample ?” and “how do we select an appropriate analytical technique?. Analytical chemistry is inherently a quantative science , whether determining the concentration of a species in a solution, evaluating an equilibrium constant, measuring a reaction rate , or drawing a correlation between a compound structure and its reactivity . Analytical chemists make measurements and perform calculations. We briefly review several important topics involving the use of number in analytical chemistry.Those who take this course have already had extensive training in stoichiometric calculations, calculations based on the weight relations of chemical formulas and equations. The work of this course will, however, require much greater use of such calculator than was needed in general chemistry. The reason is that every analysis demands some type of calculation. The sought substance is seldom isolated and weight indirectly, from the weight of a precipitate or from the volume of a solution that reacts with the sample. It is appropriate, therefore ,to begin our study of quantitative analysis with a review of stoichiometric calculations, with special emphasis on analytical applications.