1. Many types of spectrophotometers produce graphs containing a baseline with peaks. How are the peaks seen on the graphs produced by a spectrometer used in identifying substances?
2. If the analysis of a substance by using spectroscopy shows characteristic peaks, how does concentration affect the graph?
3. What is the difference between absorption spectroscopy and emission
spectroscopy?
1. The peaks seen on the graphs produced by a spectrometer are used to identify substances by comparing the wavelengths of the peaks to known wavelengths of specific substances.
2. The concentration of a substance affects the graph by changing the height of the peaks. As the concentration of the substance increases, the height of the peaks will also increase.
3. Absorption spectroscopy measures the amount of light absorbed by a substance, while emission spectroscopy measures the amount of light emitted by a substance.