Question

каким образом можно объяснить свечение красного цвета, возникающее при пропускании электрического разряда через трубку с H2???

Answer 1

Это объясняется явлением газового разряда.Газовый разряд вызывает в некоторых газах излучение видимого света, возбужденные атомы газа отдают полученную энергию в виде света. 

Answer 2

Explanation of Red Glow in H2 Discharge Tube

When an electric discharge is passed through a tube containing hydrogen gas (H2), a red glow can be observed. This phenomenon is known as the red glow discharge. The red color is a result of the excitation and de-excitation of hydrogen atoms in the discharge tube.

The red glow in the H2 discharge tube can be explained by the following process:

1. Excitation: When an electric discharge is passed through the H2 gas, the electrons in the gas gain energy and become excited. These excited electrons collide with the hydrogen atoms, causing the electrons in the hydrogen atoms to move to higher energy levels.

2. De-excitation: As the excited hydrogen atoms return to their ground state, they release the excess energy in the form of light. In the case of the red glow discharge, the energy released corresponds to the red region of the electromagnetic spectrum.

3. Balmer Series: The red glow in the H2 discharge tube is specifically associated with the Balmer series of hydrogen spectral lines. The Balmer series consists of a set of spectral lines in the visible region of the electromagnetic spectrum, with the red line (H-alpha) being the most prominent. This line corresponds to the transition of an electron from the third energy level to the second energy level in a hydrogen atom.

In summary, the red glow observed in the H2 discharge tube is caused by the excitation and de-excitation of hydrogen atoms, resulting in the emission of light in the red region of the electromagnetic spectrum.