lecture CH6 chem121REVISED
... • H negative: Exothermic reaction: more energy required to break products then reactant bonds: products have stronger bonds. • H positive: Endothermic reaction: less energy required to break products then reactant bonds: products have weaker bonds. ...
... • H negative: Exothermic reaction: more energy required to break products then reactant bonds: products have stronger bonds. • H positive: Endothermic reaction: less energy required to break products then reactant bonds: products have weaker bonds. ...
Enzymes
... Engineering Expo Projects on Thursday/Friday. Come with research question (I have some of yours) • Enzymes Quiz Tomorrow • Enzymes project due – Thursday: Periods 1, 2, 4, 6 – Friday: Periods 5, 7 ...
... Engineering Expo Projects on Thursday/Friday. Come with research question (I have some of yours) • Enzymes Quiz Tomorrow • Enzymes project due – Thursday: Periods 1, 2, 4, 6 – Friday: Periods 5, 7 ...
Equilibrium Constant- Keq
... Equilibrium Constant- Keq 1. In an experiment, 0.500 mol/L of hydrogen bromide gas is decomposed into hydrogen and bromine gases. a) Write the equilibrium equation and equilibrium law for this reaction. b) The equilibrium concentrations in this system are [HBr(g)] =0.240 mol/L and [H2(g)]=0.130 mol/ ...
... Equilibrium Constant- Keq 1. In an experiment, 0.500 mol/L of hydrogen bromide gas is decomposed into hydrogen and bromine gases. a) Write the equilibrium equation and equilibrium law for this reaction. b) The equilibrium concentrations in this system are [HBr(g)] =0.240 mol/L and [H2(g)]=0.130 mol/ ...
Reactions Flowchart
... Reactions Flowchart To determine how to predict the products of a chemical reaction, you must look at the reactants to determine what type of reaction you have. ...
... Reactions Flowchart To determine how to predict the products of a chemical reaction, you must look at the reactants to determine what type of reaction you have. ...
General Chemistry Questions
... a. an end to the liquid-gas line in a phase diagram. b. the relationship between the boiling point, melting point and vapor pressure of a substance. c. the point on a phase diagram where solid, liquid, and gas are in equilibrium. d. the three pieces of data needed to solve the Clausius-Clapeyron equ ...
... a. an end to the liquid-gas line in a phase diagram. b. the relationship between the boiling point, melting point and vapor pressure of a substance. c. the point on a phase diagram where solid, liquid, and gas are in equilibrium. d. the three pieces of data needed to solve the Clausius-Clapeyron equ ...
Synthesis Reactions occur when two of more reactants combine to
... 5. Hydrogen peroxide decomposes into oxygen and water. example 2H2O2 2H2O + O2 6. Ammonium carbonate decomposes into ammonia, carbon dioxide, and water. example A sample of ammonium carbonate is heated. (NH4)2CO3 2NH3 + CO2 + H2O 7. Sulfurous acid decomposes into sulfur dioxide and water. exam ...
... 5. Hydrogen peroxide decomposes into oxygen and water. example 2H2O2 2H2O + O2 6. Ammonium carbonate decomposes into ammonia, carbon dioxide, and water. example A sample of ammonium carbonate is heated. (NH4)2CO3 2NH3 + CO2 + H2O 7. Sulfurous acid decomposes into sulfur dioxide and water. exam ...
7.4 Acids and bases
... Strong bases include metal hydroxides and metal oxides. Metal hyroxides such as NaOH dissociate completely into hydroxide ions and a metal cation in solutions. The metal oxides first react with water to produce a metal hydroxide and then completely dissociate providing 100% hydroxide ions. An exampl ...
... Strong bases include metal hydroxides and metal oxides. Metal hyroxides such as NaOH dissociate completely into hydroxide ions and a metal cation in solutions. The metal oxides first react with water to produce a metal hydroxide and then completely dissociate providing 100% hydroxide ions. An exampl ...
HIGHER TIER CHEMISTRY MINI-MOCK UNIT 2
... Electrolysis can be used to remove unwanted hair from the skin. The hair is first coated with a layer of gel containing ions in solution. The positive electrode is connected by a patch to the skin.The negative electrode is connected to the hair. Electricity flows through the gel and causes electroly ...
... Electrolysis can be used to remove unwanted hair from the skin. The hair is first coated with a layer of gel containing ions in solution. The positive electrode is connected by a patch to the skin.The negative electrode is connected to the hair. Electricity flows through the gel and causes electroly ...
Acid Spill - Rosshall Academy
... B. Water exists mainly as molecules but contains a very small number ions C. The concentration of ions in water is constantly changing D. Water exists mainly as ions but contains a very small number molecules 6. The volume of a 2 mol l-1 solution of potassium hydroxide that contains 0.5 mol of solut ...
... B. Water exists mainly as molecules but contains a very small number ions C. The concentration of ions in water is constantly changing D. Water exists mainly as ions but contains a very small number molecules 6. The volume of a 2 mol l-1 solution of potassium hydroxide that contains 0.5 mol of solut ...
Slide 1
... Some chemical and physical changes take place by themselves, given enough time. A spontaneous chemical reaction is one that, given sufficient time, will achieve chemical equilibrium, with an equilibrium constant greater than 1, by reacting from left to right. ...
... Some chemical and physical changes take place by themselves, given enough time. A spontaneous chemical reaction is one that, given sufficient time, will achieve chemical equilibrium, with an equilibrium constant greater than 1, by reacting from left to right. ...
Modeling CO Oxidation on Silica-Supported Iron Oxide under
... (1990), proposed a generalized scheme that applies for oxidative catalysis on solid oxides. He suggests a twostep oxygen activation process, by which a primary activated form of surface oxygen (radical ion form such as O- or O2-) is first formed, which subsequently transforms into less active oxygen ...
... (1990), proposed a generalized scheme that applies for oxidative catalysis on solid oxides. He suggests a twostep oxygen activation process, by which a primary activated form of surface oxygen (radical ion form such as O- or O2-) is first formed, which subsequently transforms into less active oxygen ...
Chemical Reactions
... To write a word equation, write the names of the reactants to the left of the arrow separated by plus signs. Write the names of the products to the right of the arrow, also separated by plus ...
... To write a word equation, write the names of the reactants to the left of the arrow separated by plus signs. Write the names of the products to the right of the arrow, also separated by plus ...
Unit F335/01
... (c) At 500 K, the equilibrium constant for equation 1.1 is 7.76 × 10–3. In an equilibrium mixture at 500 K, the concentrations of hydrogen and carbon dioxide are: [H2] = 1.00 × 10–5 mol dm–3 [CO2] = 3.46 × 10–5 mol dm–3 Calculate the equilibrium concentrations of H2O and CO at 500 K. Assume the H2O ...
... (c) At 500 K, the equilibrium constant for equation 1.1 is 7.76 × 10–3. In an equilibrium mixture at 500 K, the concentrations of hydrogen and carbon dioxide are: [H2] = 1.00 × 10–5 mol dm–3 [CO2] = 3.46 × 10–5 mol dm–3 Calculate the equilibrium concentrations of H2O and CO at 500 K. Assume the H2O ...
Chapter 10 Chemical Reactions
... The Law of Conservation of Matter tells us that matter (or mass) cannot be created nor destroyed. This is very important in chemical reactions because it means that the mass of the reactants must equal the mass of the products. Or in other words, the number of reactant atoms must equal the number of ...
... The Law of Conservation of Matter tells us that matter (or mass) cannot be created nor destroyed. This is very important in chemical reactions because it means that the mass of the reactants must equal the mass of the products. Or in other words, the number of reactant atoms must equal the number of ...
Answers to Assignment #1
... Down a group: size increases; ionization energy decreases, and electron affinity decreases. 48. Explain briefly why each of the following is not a possible set of quantum numbers for an electron in a silicon atom (in its ground state). In each case, change the incorrect value (or values) in some wa ...
... Down a group: size increases; ionization energy decreases, and electron affinity decreases. 48. Explain briefly why each of the following is not a possible set of quantum numbers for an electron in a silicon atom (in its ground state). In each case, change the incorrect value (or values) in some wa ...
Catalysis
Catalysis is the increase in the rate of a chemical reaction due to the participation of an additional substance called a catalyst. With a catalyst, reactions occur faster and require less activation energy. Because catalysts are not consumed in the catalyzed reaction, they can continue to catalyze the reaction of further quantities of reactant. Often only tiny amounts are required.