The key difference between vacuum pressure and vapour pressure is that the vacuum pressure relates to a vacuum whereas vapour pressure relates to solids and liquids. A vacuum is a condition where no air or gas exists. We can create a vacuum by removing all the gases in a closed system. Usually, the vacuum pressure […]
Difference Between Energy and Exergy
The key difference between energy and exergy is that the energy is a quantitative measurement whereas the exergy is a qualitative measurement. Energy is the ability of a substance to perform work. It is hence a quantitative parameter. But exergy gives the maximum work that a substance can perform. Therefore, it is a qualitative parameter. […]
Difference Between Photochemical and Thermal Reaction
The key difference between photochemical and thermal reaction is that the photochemical reaction initiates when the reactants get energy from the photons whereas thermal reactions initiate when the reactants get heat energy. A chemical reaction is a process of rearranging the molecular or ionic structure of a substance other than a physical or a nuclear alteration. […]
Difference Between Isobaric and Isochoric Process
The key difference between isobaric and isochoric process is that the isobaric process occurs at a constant pressure whereas the isochoric process occurs at a constant volume. A thermodynamic process is a chemical or physical process that takes place in a thermodynamic system, which changes the system from an initial state to a final state. […]
Difference Between Dispersant and Surfactant
The key difference between dispersant and surfactant is that the dispersant improves the separation of particles in a suspension whereas the surfactant is a substance that can lower the surface tension between two phases of matter. A dispersant is a form of surfactant. But all surfactants are not dispersants. A surfactant can act as a […]
Difference Between Activation Energy and Threshold Energy
The key difference between activation energy and threshold energy is that the activation energy describes the potential energy difference between the reactants and the activated complex whereas the threshold energy describes the energy required by reactants to collide with each other successfully to form the activated complex. Energy is the ability to do work. If […]
Difference Between Double Displacement and Double Decomposition Reaction
The key difference between double displacement and double decomposition reaction is that the double displacement reactions are chemical reactions in which the components of two reactants replace each other whereas the double decomposition reactions is a form of double displacement reactions in which one or more reactants does not dissolve in the solvent. Both terms “double […]
Difference Between Homogeneous and Heterogeneous Reactions
The key difference between homogeneous and heterogeneous reactions is that the reactants and products that take part in homogeneous reactions are in the same phase whereas the reactants and products in heterogeneous reactions are in different phases. The homogeneity and heterogeneity are two chemical concepts that we describe regarding the uniformity of a subject. The […]
Difference Between Homogeneous and Heterogeneous Nucleation
The key difference between homogeneous and heterogeneous nucleation is that the homogeneous nucleation occurs away from the surface of the system whereas the heterogeneous nucleation occurs at the surface of the system. Nucleation is the initial step of the process of forming a new thermodynamic phase or a new structure via self-organization. There are two […]
Difference Between First and Second Order Reactions
The key difference between first and second order reactions is that the rate of first order reactions depends on the first power of the reactant concentration in the rate equation whereas the rate of second order reactions depends on the second power of the concentration term in the rate equation. The order of a reaction […]
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