Themes

What is boiling?

Boiling

The word boiling comes from the Latin language, from the word “ ebullitĭo ” , a word that refers to the process and the consequences that are obtained when a liquid is boiled . This word is a verb, and it refers to the production of a large number of bubbles due to heat or fermentation. In other words we can say that boiling is a synonym for boiling .

Boiling

What is boiling?

Boiling is the rapid vaporization that a liquid performs , which generally occurs when it is heated to a temperature such that its vapor pressure is above the pressure found in the external environment.

  • What does it consist of
  • Process
  • Boiling point
  • How it differs from evaporation
  • Applications
  • Importance of boiling
  • Examples

What does it consist of

We can say that the boiling process consists of a physical phenomenon by means of which a liquid is capable of modifying its state to become gaseous . This transition from a liquid to a gaseous state occurs when the temperature that completely surrounds the liquid reaches the so-called boiling point at a given pressure . The boiling point then consists of the temperature at which the vapor pressure is equal to the pressure of the medium around the liquid.

It is a whole physical process that is sometimes also called vaporization , which begins when heating a liquid begins to appear or bubbles of gas appear throughout its mass, which are released into the atmosphere .

Process

The process for boiling occurs when a substance increases its temperature of its mass in its entirety until it reaches a point where the vapor pressure is equal to the external atmospheric pressure . During the boiling process, a series of bubbles appear , which rise to the surface of the liquid, thus giving rise to the vapor , that is, the passage of the liquid to the gaseous state.

The specific conditions with respect to temperature and pressure under which the boiling process occurs is known as the boiling point . This has the ability to vary from substance to substance. It is also important to mention that the boiling point temperature cannot increase , but must be kept constantly at a pressure that is also constant.

Boiling point

It is known as the boiling point at the precise instant in which the change of state of a matter that goes from liquid to gaseous occurs . This concept refers to the temperature that causes the vapor pressure of a liquid to be equal to the vapor pressure of the medium in question. In other words, the boiling point is the temperature at which a liquid has the ability to boil , and it is also linked to the different specific propertiesthat has the liquid, and not its quantity. It is important to mention that when the liquid has boiled the temperature should not undergo any type of variation.

We can determine the boiling point by means of equipment known as distillation equipment . This equipment consists of a thermometer that is placed at the outlet of the vapor in order to correctly read the transition temperature of the liquid. This equipment consists of a spherical flask that is introduced into the substance to be distilled, a distillation column that can be simple or filled, a thermometer , a straight refrigerant , a collecting flask , rubber bands , a heat source andmetal tweezers .

To achieve a calculation of the variation between the normal boiling point and the boiling point at atmospheric pressure , the following formula can be applied:

ΔTeb = 1.1 x 10-4 x (760 – Patmospheric) x (273 + Teb)

Where:

  • ΔTeb = is the change in boiling point (Normal boiling point – Boiling point at given pressure)
  • Patmospheric = is the pressure at which you want to measure the boiling point
  • Teb = is the boiling point of the liquid at the given pressure (Patmospheric)

How it differs from evaporation

The main differences that we can observe between evaporation and boiling are the following:

  • The evaporation is a process that occurs in a slow and gradual . The boiling, on the other hand, occurs quickly once it has reached a certain temperature.
  • The evaporation occurs at any temperature . For the boiling process to occur, it occurs at a certain temperature .
  • The evaporation process occurs on the surface of the liquid; the boiling contrast can occur in any part of the liquid (or inner surface).
  • The main sign of boiling is the formation of bubbles ; sign that does not appear in evaporation.

Applications

The most important application is to know the purity of a certain substance . It is also used to raise the temperature of a certain product and for the proper operation of steam engines.

Importance of boiling

Knowing the boiling point of a material or substance is very important for the use of scientific or engineering applications , since in this way how you can get to know the ideal working temperatures , the energy absorbed in the phase change, select the material according to the heat requirement, among others.

Examples

Some examples of boiling are as follows:

  • Boiling point of water , at 100 ° C.
  • From silver , 2212 ° C.
  • From neon to -246 ° C.
  • From nitrogen , to -196 ° C.
  • The lowest boiling point is that of helium , which at -269 ° C will already be in the gaseous state.
  • Of cesium , at 678 ° C.
  • Of the titanium it is produced the reach 3287 ° C.
  • From manganese , at 1962 ° C.
  • Of the bromine at 59 ° C.

Related Articles

Leave a Reply

Your email address will not be published. Required fields are marked *

Check Also
Close
Back to top button