The experimental phenomena of hydrogen chloride are expressed

In the comprehensive understanding of the nature of hydrogen chloride experiment, the most typical is the fountain experiment, it almost used a variety of properties of hydrogen chloride, for its familiarity, can help us to be more familiar with and use of properties, more conducive to the production work after, this is inseparable. The following is to explain the causes of phenomena from the perspective of properties.

Phenomenon 1: After litmus test liquid is sprayed into the flask, the color becomes red. Why: Because when hydrogen chloride comes into contact with water, it forms hydrochloric acid, which turns red when it meets litmus.

Phenomenon two: The solution in the beaker will go into the flask. Reason: Because part of hydrogen chloride is dissolved in water, the gas pressure in the flask is reduced, so the beaker is easy to be sucked into the flask.

Phenomenon three: The flask is full of liquid or is not full. Reason: Full of liquid means hydrogen chloride is completely dissolved, filled with less than part of the hydrogen chloride gas, so this phenomenon is related to its purity.