what is the difference between chemical kinetics and chemical thermodynamics?
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Thermodynamics describes the overall properties, behavior, and equilibrium composition of a system, whereas kinetics describes the particular pathway by which a physical or a chemical change actually occurs.
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Chemical reactions often involve changes in energy due to the breaking and formation of bonds. Reactions in which energy is released are exothermic reactions, while those that take in heat energy are endothermic.
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Yes, equilibrium and steady-state are distinct concepts. A reaction is at equilibrium if reactants and products are both present, the forward and reverse rates are equal and the concentrations don't change over time. ... Steady-state implies a system that is not at equilibrium (entropy increases).
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Chemical kinetics or reaction kinetic is the scientific study of the rates of chemical reactions. This includes the development of mathematical model to describe the rate of reaction and an analysis of the factors that affect reaction mechanisms.
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Key Points. Chemical reactions often involve changes in energy due to the breaking and formation of bonds. Reactions in which energy is released are exothermic reactions, while those that take in heat energy are endothermic.
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Both: They both invlove changes in the state of matter. They both have energy changes. There are new things made either way, no matter if the chemical composition is changed or not.
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A chemical reaction that releases energy, usually in the form of heat. ... An exothermic reaction releases energy and feels warm while an endothermic reaction absorbs energy and feels cool.
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What is the difference between rate of reaction and reaction rate constant? Rate of reaction is the change in concentration of a reactant or product per unit time. ... The rate constant is constant for a particular reaction at a particular temperature and does not depend upon the concentrations of the reactants.
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Part of the chemical energy is converted to the kinetic energy of the car, while part is converted to thermal energy as heat emitted from the engine. Energy can change forms in a similar way in living organisms.
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The main difference between enthalpy and internal energy is that enthalpy is the heat absorbed or evolved during chemical reactions that occur in a system where as internal energy is the sum of potential and kinetic energy in a system.
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In general, short reaction times favour kinetic control, whereas longer reaction times favour thermodynamic reaction control. ... If a reaction is under thermodynamic control at a given temperature, it will also be under thermodynamic control at a higher temperature for the same reaction time.
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You should note the difference between heat and temperature. Heat is the sum of all the kinetic energies of all the molecules of an object, while temperature is the average kinetic energy of the molecules of an object. ... A hot object has greater average kinetic energy but may not have greater total kinetic energy.
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Defined by change in a system, a thermodynamic process is a passage of a thermodynamic system from an initial to a final state of thermodynamic equilibrium. ... Such processes are useful for thermodynamic theory.
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Nuclear reactions involve changes to electrons, while chemical reactions involve changes to protons and neutrons. Only chemical reactions can be exothermic. Chemical reactions can result in new compounds, while nuclear reactions can result in new elements.
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Irreversible chemical reactions can occur in only one direction. The reactants can change to the products, but the products cannot change back to the reactants. Reversible chemical reactions can occur in both directions. The reactants can change to the products, and the products can also change back to the reactants.
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In an exothermic reaction, the opposite is true. The products have less stored chemical energy than the reactants. The excess energy in the reactants is released to the surroundings when the reaction occurs. The graphs in Figure below show the chemical energy of reactants and products in each type of reaction.
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[Solved] The main difference between a catalyzed and an uncatalyzed reaction is that the catalyzed reaction has a more favorable entropy change. the | Course Hero.