Stoichiometry intro
... Remember that the coefficients from a balanced reaction represent the ratio of the moles of substances that react and form during a chemical reaction. These numbers are fixed - they do not change We can use these ratios to predict the amounts of substances that react and form in a reaction when ...
... Remember that the coefficients from a balanced reaction represent the ratio of the moles of substances that react and form during a chemical reaction. These numbers are fixed - they do not change We can use these ratios to predict the amounts of substances that react and form in a reaction when ...
Principles of Chemical Thermodynamics and Kinetics
... motion with (ideally) no forces of attraction between them, the entropy of gases is far greater than that of liquids. Liquids and solids both have their molecules touching, but the molecules in liquids have more freedom than those of solids. To summarize S for the phases: gas >> liquid > solid. Exa ...
... motion with (ideally) no forces of attraction between them, the entropy of gases is far greater than that of liquids. Liquids and solids both have their molecules touching, but the molecules in liquids have more freedom than those of solids. To summarize S for the phases: gas >> liquid > solid. Exa ...
AP Chemistry: Chapter 13 Gaseous Equilibrium Section 1: Multiple
... If a suitable solid catalyst were placed in the reaction vessel, would the final total pressure of the gases at equilibrium be greater than, less than, or equal to the final total pressure of the gases at equilibrium without the catalyst? Justify your answer. (Assume that the volume of the solid cat ...
... If a suitable solid catalyst were placed in the reaction vessel, would the final total pressure of the gases at equilibrium be greater than, less than, or equal to the final total pressure of the gases at equilibrium without the catalyst? Justify your answer. (Assume that the volume of the solid cat ...
Endothermic reactions
... You have seen many reactions that release energy. Chemical reactions that release energy are called exergonic (ek sur GAH nihk) reactions. In these reactions, less energy is required to break the original bonds than is released when new bonds are formed. As a result, some form of energy, such as lig ...
... You have seen many reactions that release energy. Chemical reactions that release energy are called exergonic (ek sur GAH nihk) reactions. In these reactions, less energy is required to break the original bonds than is released when new bonds are formed. As a result, some form of energy, such as lig ...
SAMPLE PAPER -9 Time Allowed: 3 Hrs
... 3. Name a food preservative which is used by food producers. 4. Write the IUPAC name of CH3 – CH(CH3) – CO – CH(CH3) – CHO 5. What is depressant? Give example? 6. Write any one function of DNA? 7. What causes Brownian movement in a colloidal solution? ...
... 3. Name a food preservative which is used by food producers. 4. Write the IUPAC name of CH3 – CH(CH3) – CO – CH(CH3) – CHO 5. What is depressant? Give example? 6. Write any one function of DNA? 7. What causes Brownian movement in a colloidal solution? ...
Fe(H2O)63+ + H2O → ← H3O+ + Fe(H2O)5(OH)2+
... 51. If a reaction proceeding by the mechanism A + B → C + D occurs at a rate x, and if the concentrations of A and B are both doubled, what will be the new rate of reaction? (A) (B) (C) (D) (E) ...
... 51. If a reaction proceeding by the mechanism A + B → C + D occurs at a rate x, and if the concentrations of A and B are both doubled, what will be the new rate of reaction? (A) (B) (C) (D) (E) ...
Spectroscopic Characterization of Mixed Fe−Ni
... showed the formation of a mixed NiO/NiFe2O4 phase at low Fe concentrations, and formation of Fe2O3 at compositions above 25 mol % Fe. Raman vibrational spectroscopy confirmed the formation of NiFe2O4, and did not detect Fe2O3 in the electrocatalysts containing up to 20 mol % Fe. X-ray absorption near ...
... showed the formation of a mixed NiO/NiFe2O4 phase at low Fe concentrations, and formation of Fe2O3 at compositions above 25 mol % Fe. Raman vibrational spectroscopy confirmed the formation of NiFe2O4, and did not detect Fe2O3 in the electrocatalysts containing up to 20 mol % Fe. X-ray absorption near ...
Efficient Homogeneous Catalysis in the Reduction of CO to CO
... pathway for the consumption of CO2 is its reduction to CO by the enzyme acetyl-CoA synthase/CO dehydrogenase (ACS-CODH).2 Due to the large energy input required to generate it from CO2, CO is produced industrially from fossil fuels.3 Even with strong reducing agents, however, overcoming the OdCO bon ...
... pathway for the consumption of CO2 is its reduction to CO by the enzyme acetyl-CoA synthase/CO dehydrogenase (ACS-CODH).2 Due to the large energy input required to generate it from CO2, CO is produced industrially from fossil fuels.3 Even with strong reducing agents, however, overcoming the OdCO bon ...
School of Chemistry and Physics Westville Campus, Durban
... Lewis structures are a simplified model that illustrates how valence electrons are shared between covalent compounds. ...
... Lewis structures are a simplified model that illustrates how valence electrons are shared between covalent compounds. ...
ACP Chemistry Semester 1 Final Exam - Doc-U-Ment
... A) energy associated with the temperature of an object B) energy associated with the motion of an object C) energy associated with the force of an object D) energy associated with the gravity of an object E) All the above are true for thermal energy 3) Which of the following are examples of extensiv ...
... A) energy associated with the temperature of an object B) energy associated with the motion of an object C) energy associated with the force of an object D) energy associated with the gravity of an object E) All the above are true for thermal energy 3) Which of the following are examples of extensiv ...
ppt - UCLA Chemistry and Biochemistry
... Gas Phase Equilibrium Solution Phase Equilibrium Extent of Reaction Direction of Reaction ...
... Gas Phase Equilibrium Solution Phase Equilibrium Extent of Reaction Direction of Reaction ...
Supramolecular catalysis
Supramolecular catalysis is not a well-defined field but it generally refers to an application of supramolecular chemistry, especially molecular recognition and guest binding, toward catalysis. This field was originally inspired by enzymatic system which, unlike classical organic chemistry reactions, utilizes non-covalent interactions such as hydrogen bonding, cation-pi interaction, and hydrophobic forces to dramatically accelerate rate of reaction and/or allow highly selective reactions to occur. Because enzymes are structurally complex and difficult to modify, supramolecular catalysts offer a simpler model for studying factors involved in catalytic efficiency of the enzyme. Another goal that motivates this field is the development of efficient and practical catalysts that may or may not have an enzyme equivalent in nature.A closely related field of study is asymmetric catalysis which requires molecular recognition to differentiate two chiral starting material or chiral transition states and thus it could be categorized as an area of supramolecular catalysis, but supramolecular catalysis however does not necessarily have to involve asymmetric reaction. As there is another Wikipedia article already written about small molecule asymmetric catalysts, this article focuses primarily on large catalytic host molecules. Non-discrete and structurally poorly defined system such as micelle and dendrimers are not included.