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Physical Chemistry and Nuclear Chemistry

Physical chemistry is the study of macroscopic, and particulate phenomena in chemical systems in terms of the principles, practices, and concepts of physics such as motion, energy, force, time, thermodynamics, quantum chemistry, statistical mechanics, analytical dynamics and chemical equilibrium.

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Radiocarbon

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Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon

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Nuclear Chemistry

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Nuclear chemistry is the sub-field of chemistry dealing with radioactivity, nuclear processes, and transformations in the nuclei of atoms, such as nuclear transmutation and nuclear properties. ... An important area is the behavior of objects and materials after being placed into a nuclear waste stor...

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Catalysis and reaction mechanism

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Catalyst, in chemistry, any substance that increases the rate of a reaction without itself being consumed,Enzymes are naturally occurring catalysts responsible for many essential biochemical reactions.The reaction mechanism describes the sequence of elementary reactions that must occur to go from re...

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Collision Theory

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Collision theory, theory used to predict the rates of chemical reactions, particularly for gases. The collision theory is based on the assumption that for a reaction to occur it is necessary for the reacting species (atoms or molecules) to come together or collide with one another.There are three im...

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Activation energy

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Activation energy, in chemistry, the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo chemical transformation or physical transport.The role of activation energy in a chemical reaction is to start the reaction by arranging the reactant...

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Rate constants and Order of reactions

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k is the first-order rate constant, which has units of 1/s. The method of determining the order of a reaction is known as the method of initial rates. The overall order of a reaction is the sum of all the exponents of the concentration terms in the rate equation.

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Half life reactions

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The half-life of a reaction, t1/2, is the amount of time needed for a reactant concentration to decrease by half compared to its initial concentration. Its application is used in chemistry and medicine to predict the concentration of a substance over time.

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Intergrated rate laws

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The rate law is a differential equation, meaning that it describes the change in concentration of reactant(s) per change in time. Using calculus, the rate law can be integrated to obtain an integrated rate equation that links concentrations of reactants or products with time directly.

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Intergrated rate laws

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The rate law is a differential equation, meaning that it describes the change in concentration of reactant(s) per change in time. Using calculus, the rate law can be integrated to obtain an integrated rate equation that links concentrations of reactants or products with time directly.

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Determining Rate law

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In order to determine a rate law we need to find the values of the exponents n, m, and p, and the value of the rate constant, k. If we are given the reaction orders for a reaction, we have the values of the coefficients we need to write the rate law.Rate laws or rate equations are mathematical expre...

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Activation energy calculations

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Step 1: Convert temperatures from degrees Celsius to Kelvin. T = degrees Celsius 273.15. T1 = 3 273.15. ... Step 2 - Find Ea ln(k2/k1) = Ea/R x (1/T1 - 1/T2) ln(7.1 x 10-2/8.9 x 10-3) = Ea/8.3145 J/K·mol x (1/276.15 K - 1/308.15 K) ... Answer: The activation energy for this reaction is 4.59 x 1...

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Rate laws

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Because the rate of a reaction has dimensions of concentration per unit time, the dimensions of the rate constant k depend on the exponents of the concentration terms in the rate law. If p is the sum of the exponents of the concentration terms in the rate law, p=a b

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Reaction rate(average rates and Instantenous rates)

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Reaction rate, in chemistry, the speed at which a chemical reaction proceeds. It is often expressed in terms of either the concentration (amount per unit volume) of a product that is formed in a unit of time or the concentration of a reactant that is consumed in a unit of time.

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Chemical reaction rate

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Reaction rate, in chemistry, the speed at which a chemical reaction proceeds. It is often expressed in terms of either the concentration (amount per unit volume) of a product that is formed in a unit of time or the concentration of a reactant that is consumed in a unit of time.

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Chemical kinetics

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rate (kinetics) Kinetics: Rate. Chemical Kinetics - The study of the rates of chemical reactions. Rate of a Reaction - The change in concentration of one of the reactants (DX), during a given period of time (Dt) The reaction rate gradually decreases as reactants are consumed.

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Introduction to Physical Chemistry

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Physical chemistry is the study of macroscopic, and particulate phenomena in chemical systems in terms of the principles, practices, and concepts of physics such as motion, energy, force, time, thermodynamics, quantum chemistry, statistical mechanics, analytical dynamics and chemical equilibrium.

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