Enthalpy, entropy

Entropy is one of the state functions used to measure the randomness of the thermodynamic system. Entropy is usually measured for a system and surroundings together to calculate the overall change in the Entropy.  ∆S = Ssystem  – S surroundings Or ∆S = Sfinal – S initial Or ∆S = S2-S1 Only the difference between […]

Adsorption is a surface phenomenon in which adsorbate molecules are attracted to the adsorbent. Adsorption reaction is an exothermic process because energy (heat) is always released when attractive interactions occur. The enthalpy of adsorption is the quantity of heat emitted when one mole of adsorbate is adsorbed mainly on the surface of an adsorbent. Adsorption

The lowest temperature at which a substance can retain no heat energy is absolute zero. At this temperature, the vibrational motion of nature’s fundamental particles is insignificant. That temperature is 0K on the Kelvin scale, –273.15 degrees on the Celsius scale, and 459.67 degrees on the Fahrenheit scale. Any thermometric scale on which a measurement