Author: workhouse123
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How many laws of thermodynamics are there?
There are four laws of thermodynamics and are given below: In the next few sections, we will discuss each of the laws of thermodynamics in detail. Zeroth Law of Thermodynamics The Zeroth law of thermodynamics states that if two bodies are individually in equilibrium with a separate third body, then the first two bodies are…
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Thermodynamics Solved Problems
Calculate ΔG at 290 K for the following reaction: 2NO(g)+O2(g)+2NO2(g) Solution: Given: ΔH = -120kJ and ΔS = -150JK-1 To make the unit of ΔS the same as ΔH, we have to convert the unit of ΔS as follows:ΔS=−150J/K(1kJ=1000J)⇒ΔS=−0.15kJ/K We know that,G=U+PV–TS⇒ΔG=ΔH–TΔS So,ΔG=−120kJ–(290K)(−0.150kJ/K)⇒ΔG=−120kJ+43kJ⇒ΔG=−77kJ Therefore, ΔG is -77kJ.
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Thermodynamic Properties
Thermodynamic properties are defined as characteristic features of a system, capable of specifying the system’s state. Thermodynamic properties may be extensive or intensive. Thermodynamic properties are defined as characteristic features of a system, capable of specifying the system’s state. Thermodynamic properties may be extensive or intensive. What is Enthalpy? Enthalpy is the measurement of energy in a thermodynamic system. The quantity…
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Basic Concepts of Thermodynamics – Thermodynamic Terms
Thermodynamics has its own unique vocabulary associated with it. A good understanding of the basic concepts forms a sound understanding of various topics discussed in thermodynamics preventing possible misunderstandings. System A thermodynamic system is a specific portion of matter with a definite boundary on which our attention is focused. The system boundary may be real…
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Different Branches of Thermodynamics
Thermodynamics is classified into the following four branches: Classical Thermodynamics In classical thermodynamics, the behaviour of matter is analysed with a macroscopic approach. Units such as temperature and pressure are taken into consideration, which helps the individuals calculate other properties and predict the characteristics of the matter undergoing the process. Statistical Thermodynamics In statistical thermodynamics,…
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Distinction Between Mechanics and Thermodynamics
The distinction between mechanics and thermodynamics is worth noting. In mechanics, we solely concentrate on the motion of particles or bodies under the action of forces and torques. On the other hand, thermodynamics is not concerned with the motion of the system as a whole. It is only concerned with the internal macroscopic state of…
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What is Thermodynamics?
Thermodynamics in physics is a branch that deals with heat, work and temperature, and their relation to energy, radiation and physical properties of matter. To be specific, it explains how thermal energy is converted to or from other forms of energy and how matter is affected by this process. Thermal energy is the energy that…
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Applications of Acoustics
Acoustics is a vast branch of science that finds its application in almost every field. Some of the prominent applications of acoustics are:
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Types of Acoustics
Environmental Noise Environmental acoustics is concerned with vibration and noise caused by roadways. Railways, aircraft and general activities that are related to the environment. The main goal of these is to reduce vibration and noise that affects the environment. Musical Acoustics Musical acoustics is concerned with the study of physics of music i.e., how sounds…
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What Is Acoustic Energy?
Acoustic energy can be defined as the disturbance of energy which passes through matter in the form of a wave. In other words, it is the energy concerning the mechanical vibrations from its components is called acoustic energy. Any acoustic event has the following stages. The process in which some other form of energy is…