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Spontaneous adsorption of a gas on a solid surface is exothermic process because
Spontaneous adsorption of a gas on a solid surface is exothermic because it leads to a decrease in the entropy of the system. The gas molecules lose their freedom of movement when they get adsorbed onto the solid surface, leading to a decrease in entropy.
Identify the correct statement regarding entropy :
According to the third law of thermodynamics, at absolute zero (0 K), the entropy of a perfectly crystalline substance is zero. This is because a perfectly crystalline substance at absolute zero has only one possible microstate, leading to zero entropy.
Identify the correct statement regarding a spontaneous process :
In an isolated system, there is no exchange of energy or matter between the system and surrounding. For a spontaneous process in an isolated system, the change in entropy is positive, i.e. $ OS \gt 0 $
OS will be highest for the reaction
The spontaneous flow of heat is always
The spontaneous flow of heat is always unidirectional from higher temperature to lower temperature. This is in accordance with the second law of thermodynamics, which states that heat naturally flows from a hot object to a cooler one until thermal equilibrium is reached.
The occurrence of a reaction is impossible if
Identify the correct statement regarding entropy
According to the third law of thermodynamics, the entropy of a perfectly crystalline substance is zero at absolute zero temperature (0 Kelvin). This is because a perfectly crystalline substance has a single microstate at absolute zero, leading to zero entropy.
A container has hydrogen and oxygen mixture in ratio of 4 : 1 by weight, then
When hydrogen and oxygen are mixed, the number of possible microstates increases, leading to an increase in entropy. Entropy is a measure of disorder, and mixing two different gases increases the disorder of the system.
The second law of thermodynamics says that in cyclic process.
The second law of thermodynamics states that heat cannot be completely converted into work in a cyclic process. There will always be some waste heat that is not converted into work, which is why perpetual motion machines of the second kind are impossible.
A heat engine absorbs heat $Q_1$ at temperature $T_1$ and heat $Q_2$ at temperature $T_2$. Work done by the engine is $(Q_1 + Q_2)$ . This data
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