Part I: Quantitatively examining the emission Spectra because that Hydrogen and also Helium part II: Qualitatively analyzing the emission Spectra because that Various metal Ions


Calibrating the Spectroscope

The calibration of her spectroscope is essential to exactly for systematic error. This is done by to compare your experimentally- identified wavelengths come wavelengths acquired from the literature. A convenient source of emission lines is the helium discharge tube.

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Proceed come the station with the helium tube in the strength supply. Look through the eyepiece of your spectroscope and find the 6 helium lines. Keep in mind the place of these lines through regard to the scale and record their colors and their wavelength in Angstroms in your activities notebook.

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Readings space dependent top top the place of her eye. Therefore, one person should take the readings and also should be continual with the place of your eye family member to the eyepiece.

Prepare a calibration plot through graphing the range reading acquired experimentally top top the x axis versus the literary works wavelength worth on the y axis. You have to use a full sheet of record for the plot. This plot will be used to calculate the corrected wavelengths because that the hydrogen spectrum and will be various for every spectroscope.

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Therefore, take it data carefully and use your own, not an additional group"s!

shade of Line Theoretical Wavelength in Angstroms Blue-violet 4471 Blue 4713 Green 5015 Orange 5875 Red-Orange 7065 Dark Red 7281

Here is an example of what a calibration graph looks like.

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speculative vs. Theoretical Wavelengths
4471 4450
4713 4700
5015 5000
5875 5860
7065 7040
7281 7250

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