1A_experiment_H_spectrum

1A_experiment_H_spectrum - 309 LINE SPECTRUM OF HYDROGEN...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 309 LINE SPECTRUM OF HYDROGEN OBJECTIVES FOR THE EXPERIMENT The student will be able to do the following: 1. Calculate the frequencies and wavelengths for the light emitted in the first five transitions in the Balmer series for hydrogen. 2. Experimentally determine degree of diffraction reading for light sources using a spectroscope. 3. Determine wavelengths from experimental degree of diffraction readings and a graph of degree of diffraction vs. wavelength. 4. Calculate percent error. BACKGROUND The purpose of the experiment is to study the Balmer Series of the line spectrum of hydrogen. This is the portion of the line spectrum of hydrogen that lies in the visible range. The wavelengths for this series will be determined in two ways. 1. The actual wavelengths for the first five transitions in the Balmer Series will be calculated using the Rydberg equation and the relationship between frequency and wavelength. = frequency R = 3.289 x 10 15 s- 1 n high = 3,4,5,.... c = speed of light = 2.9979 x 10 8 m/s 2. Three or four of the wavelengths for the lines in the hydrogen spectrum will also be determined experimentally using a hydrogen light source and a spectroscope. The spectroscopes used in the experiment do not register the position of the lines in terms of wavelength but in terms of degree of diffraction. Different diffraction gratings will yield different angles of diffraction, so each spectroscope will give slightly different angles for the same wavelengths. To obtain the wavelengths, we must first set up a calibration graph for your spectroscope so that the degrees can be converted to wavelengths.first set up a calibration graph for your spectroscope so that the degrees can be converted to wavelengths....
View Full Document

This note was uploaded on 03/03/2012 for the course CHEM 100 taught by Professor Mark during the Fall '06 term at Monterey Peninsula College.

Page1 / 4

1A_experiment_H_spectrum - 309 LINE SPECTRUM OF HYDROGEN...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online