C2 revision slides V3 + questions + MS – F
... increases number of collisions and increases rate Temperature: Particles have more energy and move faster and collide more often. More particles have energy greater than the activation energy so more successful collisions Catalyst: Catalysts change the rate of chemical reactions but are not used up ...
... increases number of collisions and increases rate Temperature: Particles have more energy and move faster and collide more often. More particles have energy greater than the activation energy so more successful collisions Catalyst: Catalysts change the rate of chemical reactions but are not used up ...
synthesis and potentiometric analysis of - G
... to a decrease in the stability of the compounds. This is primarily due to changes in the hydrated environment of metal ion of complexing agent. However, the above data on the equilibrium constants are not sufficiently informative. Therefore, we calculated the basic thermodynamic parameters of the pr ...
... to a decrease in the stability of the compounds. This is primarily due to changes in the hydrated environment of metal ion of complexing agent. However, the above data on the equilibrium constants are not sufficiently informative. Therefore, we calculated the basic thermodynamic parameters of the pr ...
AP Chemistry Review Preparing for the AP
... Consists of three reactions and usually a lab question about the reaction. Write the reactant in symbol form for all reactions showing each reactant in net ionic form as follows: Strong Acids, bases, and soluble salts written as ions. Weak acids, bases, and insoluble salts written as molecules. Clas ...
... Consists of three reactions and usually a lab question about the reaction. Write the reactant in symbol form for all reactions showing each reactant in net ionic form as follows: Strong Acids, bases, and soluble salts written as ions. Weak acids, bases, and insoluble salts written as molecules. Clas ...
Final Exam - Seattle Central College
... (solids, liquids, gases) given descriptions of volume, shape, particles moving, etc. • Classify properties and changes as physical or chemical - Know terms for changes of state: - Melting, freezing, vaporizing, condensation, sublimation, deposition CHEM121 Final Exam Study Guide ...
... (solids, liquids, gases) given descriptions of volume, shape, particles moving, etc. • Classify properties and changes as physical or chemical - Know terms for changes of state: - Melting, freezing, vaporizing, condensation, sublimation, deposition CHEM121 Final Exam Study Guide ...
Chapter 3: Chemical Reactions and the Earth`s Composition
... 1. Calculate the mass or the # of moles of the 2nd reactant needed to completely react with the 1st reactant. – If the moles needed is greater than the number of moles present for the 2nd reactant • That 2nd reactant will run out before the 1st reactant. • The 2nd reactant = the limiting reactant, a ...
... 1. Calculate the mass or the # of moles of the 2nd reactant needed to completely react with the 1st reactant. – If the moles needed is greater than the number of moles present for the 2nd reactant • That 2nd reactant will run out before the 1st reactant. • The 2nd reactant = the limiting reactant, a ...
9.1 Electron Transfer Reactions
... 5. O is usually – 2 (except for peroxides where it is – 1) 6. H is usually +1 (except for hydrides where it is – 1) 7. The periodic table can used as a guide for an atom’s oxidation number in a compound (ex: F is usually – 1, alkali metals are usually +1) ...
... 5. O is usually – 2 (except for peroxides where it is – 1) 6. H is usually +1 (except for hydrides where it is – 1) 7. The periodic table can used as a guide for an atom’s oxidation number in a compound (ex: F is usually – 1, alkali metals are usually +1) ...
University Studies Chem. 414 Math
... enhances students’ abilities to correlate molecular structure to macroscopic behavior. As such, this course emphasizes a significant practice in the application of mathematical/statistical approaches to physical chemistry principles, thereby empowering the intellectual/critical thinking development ...
... enhances students’ abilities to correlate molecular structure to macroscopic behavior. As such, this course emphasizes a significant practice in the application of mathematical/statistical approaches to physical chemistry principles, thereby empowering the intellectual/critical thinking development ...
Derivation of the BET and Langmuir Isotherms
... desorption from the monolayer is large compared with the enthalpy of vaporization. ...
... desorption from the monolayer is large compared with the enthalpy of vaporization. ...
Chapter1 - WilsonChemWiki
... Water as a Solvent: water is polar molecule that forms with solutes what is called a hydrogen bond. Hydrogen bond: occurs between molecules where partially positive hydrogen is attracted to the strongly electronegative atoms of O, N, or F in other molecules. Formation of Solutions: Solutions are for ...
... Water as a Solvent: water is polar molecule that forms with solutes what is called a hydrogen bond. Hydrogen bond: occurs between molecules where partially positive hydrogen is attracted to the strongly electronegative atoms of O, N, or F in other molecules. Formation of Solutions: Solutions are for ...
SOLUBILITY RULES FOR IONIC COMPOUNDS IN WATER
... many moles of O2 must be added to the container to reduce the quantity of N2O to 0.200 moles at equilibrium. 5. The following reaction is exothermic: PCl3 (g) + Cl2 (g) ⇆ PCl5 (g) For each of the following disturbances, indicate (1) the direction the equilibrium will shift, and (2) whether the new e ...
... many moles of O2 must be added to the container to reduce the quantity of N2O to 0.200 moles at equilibrium. 5. The following reaction is exothermic: PCl3 (g) + Cl2 (g) ⇆ PCl5 (g) For each of the following disturbances, indicate (1) the direction the equilibrium will shift, and (2) whether the new e ...
Luminescence spectroscopy
... molecule can return to the ground state by emission of a photon, called fluorescence. The fluorescence lifetime is much greater than the absorption time and occurs in the range from 10-7 to 10-9s. As the lifetime in the excited state is increased, the probability of fluorescence will be decreased si ...
... molecule can return to the ground state by emission of a photon, called fluorescence. The fluorescence lifetime is much greater than the absorption time and occurs in the range from 10-7 to 10-9s. As the lifetime in the excited state is increased, the probability of fluorescence will be decreased si ...
AP Review to Share - Wappingers Central School District
... A 2 step mechanism might result in double hump. ...
... A 2 step mechanism might result in double hump. ...
Transition state theory
Transition state theory (TST) explains the reaction rates of elementary chemical reactions. The theory assumes a special type of chemical equilibrium (quasi-equilibrium) between reactants and activated transition state complexes.TST is used primarily to understand qualitatively how chemical reactions take place. TST has been less successful in its original goal of calculating absolute reaction rate constants because the calculation of absolute reaction rates requires precise knowledge of potential energy surfaces, but it has been successful in calculating the standard enthalpy of activation (Δ‡Hɵ), the standard entropy of activation (Δ‡Sɵ), and the standard Gibbs energy of activation (Δ‡Gɵ) for a particular reaction if its rate constant has been experimentally determined. (The ‡ notation refers to the value of interest at the transition state.)This theory was developed simultaneously in 1935 by Henry Eyring, then at Princeton University, and by Meredith Gwynne Evans and Michael Polanyi of the University of Manchester. TST is also referred to as ""activated-complex theory,"" ""absolute-rate theory,"" and ""theory of absolute reaction rates.""Before the development of TST, the Arrhenius rate law was widely used to determine energies for the reaction barrier. The Arrhenius equation derives from empirical observations and ignores any mechanistic considerations, such as whether one or more reactive intermediates are involved in the conversion of a reactant to a product. Therefore, further development was necessary to understand the two parameters associated with this law, the pre-exponential factor (A) and the activation energy (Ea). TST, which led to the Eyring equation, successfully addresses these two issues; however, 46 years elapsed between the publication of the Arrhenius rate law, in 1889, and the Eyring equation derived from TST, in 1935. During that period, many scientists and researchers contributed significantly to the development of the theory.