Why is Kelvin scale adopted for chemical calculations?

Answer 1

There are two types of numerical scales available: relative and absolute. A relative scale arbitrarily (i.e. as judged by the person) assigns a point of origin that is said to be equal to "zero". While in some cases this makes measurement for some values quite simple (e.g. the freezing point of pure water is 0 Celsius), in other cases moving to the left of the zero mark (that is, producing negative values) could cause formulas to produce unintended results.

On the other hand, an absolute scale relates the origin to some absolute and definite zero. In the case of the Kelvin, the "zero" chosen corresponds to the temperature where the kinetic energy of a perfect crystal of matter is equal to zero. For one thing, this resolves the difficulty of determining what "zero" actually stands for. Another advantage of the Kelvin scale is that it is incremented in absolute values, that is, all values are always positive. This eliminates the problem of factoring in negative values into a particular equation.

Answer When doing chemistry, it is always a good idea to use Celsius or Kelvin, simply because it is measure of temperature that is understood in the majority of the world. Kelvin is simply more accurate to the hypothetical "absolute zero" than Celsius.

Answer 2

Kelvin Scale is an absolute temperature scale. This means that it starts at a different point than Celsius, its counterpart. This is why you must add 273.15 to a Celsius temperature in order to get a Kelvin temperature. The Kelvin scale starts at absolute zero whereas Celsius starts at the freezing point of water. Kelvin is used more often in science such as in the ideal gas equation. It is more convenient to use it than Celsius when dealing with very cold temperatures and with things like the Perfect Gas Laws which reference absolute zero.

Answer 3

The Kelvin scale has an advantage over other temperature scales such as Celsius or Fahrenheit, because the Kelvin scale begins at the true zero of temperature. Zero degree Kelvin means there is no thermal motion at all, the particles of the substance in question are at minimum energy state (electrons still orbit the nucleus and radioisotopes still give off radiation), but no thermal radiation (heat) can be given off. Consequently, the temperature in degrees Kelvin is proportional to the actual amount of thermal energy. Some types of calculations become much simpler as a result.

Answer 4

For physical reasons, it is much more logical to use a scale that doesn't have negative temperatures. The temperature is related to the average energy of particles, and the particles simply don't have a negative energy. - Using an absolute scale, such as Kelvin, makes some calculations simpler than when you use Celsius.

Answer 5

It is convenient. There is never a negative sign with the kelvin temperature scale.

Answer 6

with kelvin the lowest possible temperature is 0, there are no negative figures, but with Celsius absolute zero is way below 0, a minus figure

Answer 7

The Kelvin temperature scale is an absolute, based on thermodynamics scale.

Answer 8

Use this equation to convert Celsius/Centigrade to degrees Kelvin: [K] = [°C] + 273.15