Experiment 21 Electrochemical Cells and Electroplating

Electrochemical cells are constructed, and their cell potentials are determined with a voltmeter. Electroplating is accomplished by using an external power supply, usually a battery, to plate a metal onto an electrode. (See Electrochemistry chapter.) 

The cell potentials are measured with a voltmeter. Refer to the figure of the electrochemical cell in Chapter 16. 

Any of a number of chemical reactions can be used to synthesize an organic compound. After synthesis, the compound is purified and tested. (See the chapter on Organic Chemistry.) 

Quantities of reactants are measured by using either mass or volume measurements. In some cases, the mass of the product is measured. 

When the mass of the product (actual yield) is measured, normally a percent yield is required. The mass of the limiting reagent is converted, through moles, to the theoretical yield of product. The percent yield is calculated by dividing the actual yield by the theoretical yield, then multiplying the resulting value by 100%. 

---