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AP Chemistry - Partners4results
... 2. A Brønsted-Lowry base is defined as a substance that a. increases [H+] when placed in H2O. b. decreases [H+] when placed in H2O. c. increases [OH-] when placed in H2O. d. acts as a proton acceptor. e. acts as a proton donor. 3. A substance that is capable of acting as both an acid and as a base i ...
... 2. A Brønsted-Lowry base is defined as a substance that a. increases [H+] when placed in H2O. b. decreases [H+] when placed in H2O. c. increases [OH-] when placed in H2O. d. acts as a proton acceptor. e. acts as a proton donor. 3. A substance that is capable of acting as both an acid and as a base i ...
NOTES CHEMICAL REACTIONS:
... • 2. Identify the different types of reactions • 3. Be able to predict the products for both single and double replacement reactions • 4. Determine if a reaction will take place using either the activity series of metals or solubility rules • 5. Understand the role of a catalyst in a chemical reacti ...
... • 2. Identify the different types of reactions • 3. Be able to predict the products for both single and double replacement reactions • 4. Determine if a reaction will take place using either the activity series of metals or solubility rules • 5. Understand the role of a catalyst in a chemical reacti ...
Reaction Rate Reading Packet
... For the same mass, many small particles have a greater total surface area than one large particle. For example, steel wool has a larger surface area than a block of steel of the same mass. This allows oxygen molecules to collide with many more iron atoms per unit of time. The more surface contact be ...
... For the same mass, many small particles have a greater total surface area than one large particle. For example, steel wool has a larger surface area than a block of steel of the same mass. This allows oxygen molecules to collide with many more iron atoms per unit of time. The more surface contact be ...
CHEM 1412. Chapter 15. Chemical Equilibrium (Homework)
... 17. 15.00 g of solid ammonium hydrogen sulfide is introduced into a 500.-mL flask at 25°C, the flask is sealed, and the system is allowed to reach equilibrium. What is the partial pressure of ammonia in this flask if Kp = 0.108 at 25°C for NH4HS(s) NH3(g) + H2S (g)? A. 0.657 atm B. 1.25 atm C. 0.329 ...
... 17. 15.00 g of solid ammonium hydrogen sulfide is introduced into a 500.-mL flask at 25°C, the flask is sealed, and the system is allowed to reach equilibrium. What is the partial pressure of ammonia in this flask if Kp = 0.108 at 25°C for NH4HS(s) NH3(g) + H2S (g)? A. 0.657 atm B. 1.25 atm C. 0.329 ...
Chemical Reactions Notes-1a-1
... The positive ions have the surrounding oxygen atoms of water pointing towards the ion, negative ions have the surrounding hydrogen atoms of water pointing towards the ion. The transport of ions through the solution causes electric current to flow through the solution. ...
... The positive ions have the surrounding oxygen atoms of water pointing towards the ion, negative ions have the surrounding hydrogen atoms of water pointing towards the ion. The transport of ions through the solution causes electric current to flow through the solution. ...
Question 1. Phosgene was used during the World War - IQ
... Question 5. In a lecture on covalent bonds, a student, making associations between H and Li in terms of number of electrons on the valence shell, asks the teacher if it is possible the existence of a molecule Li2, as the molecule H2 exists. (a) Using your understanding on chemical bond, show if it i ...
... Question 5. In a lecture on covalent bonds, a student, making associations between H and Li in terms of number of electrons on the valence shell, asks the teacher if it is possible the existence of a molecule Li2, as the molecule H2 exists. (a) Using your understanding on chemical bond, show if it i ...
CHE-04 (2017)
... We hope, you are familiar with the system of evaluation to be followed for the Bachelor’s Degree Programme. At this stage you may probably like to re-read the section on assignments in the Programme Guide that we sent you after your enrolment. A weightage of 30 percent, as you are aware, has been ea ...
... We hope, you are familiar with the system of evaluation to be followed for the Bachelor’s Degree Programme. At this stage you may probably like to re-read the section on assignments in the Programme Guide that we sent you after your enrolment. A weightage of 30 percent, as you are aware, has been ea ...
5 · Chemical Reactions
... SECTION 2: MULTIPLE CHOICE. Select the best answer choice for each question. (2 points each) 5. In a chemical reaction the total mass of the chemicals before the reaction and after the reaction is (A) equal. (B) usually greater. (C) usually smaller. (D) sometimes greater and sometimes smaller. 6. Wh ...
... SECTION 2: MULTIPLE CHOICE. Select the best answer choice for each question. (2 points each) 5. In a chemical reaction the total mass of the chemicals before the reaction and after the reaction is (A) equal. (B) usually greater. (C) usually smaller. (D) sometimes greater and sometimes smaller. 6. Wh ...
Computational thermodynamics - IS MU
... equations, global minimization of Gibbs energy, driving force for a phase. 3. Phase diagrams: definition and types, mapping a phase diagram, implicitly defined functions and their derivatives. Optimization methods: the principle of the leastsquares method, the weighting factor. Marquardt’s algorithm ...
... equations, global minimization of Gibbs energy, driving force for a phase. 3. Phase diagrams: definition and types, mapping a phase diagram, implicitly defined functions and their derivatives. Optimization methods: the principle of the leastsquares method, the weighting factor. Marquardt’s algorithm ...
Properties of Gases
... 3. Gay Lussac’s Law (Relationship between Pressure and Temperature) This law states that the pressure (P) of a gas is directly proportional to its temperature (T) in Kelvin scale at a constant volume (V). (As the Temperature increases, the pressure of the gas increases at constant V) P = (constant) ...
... 3. Gay Lussac’s Law (Relationship between Pressure and Temperature) This law states that the pressure (P) of a gas is directly proportional to its temperature (T) in Kelvin scale at a constant volume (V). (As the Temperature increases, the pressure of the gas increases at constant V) P = (constant) ...
Chapter 8
... Energy and Chemical Bonds • A chemical – Potential - attractive forces in an ionic compound or sharing of electrons covalent compound – Kinetic – (often in form of heat) occurs when bonds are broken and particles allowed to move – To determine the energy of a reaction it is necessary to keep track ...
... Energy and Chemical Bonds • A chemical – Potential - attractive forces in an ionic compound or sharing of electrons covalent compound – Kinetic – (often in form of heat) occurs when bonds are broken and particles allowed to move – To determine the energy of a reaction it is necessary to keep track ...
Chemical equilibrium
In a chemical reaction, chemical equilibrium is the state in which both reactants and products are present in concentrations which have no further tendency to change with time. Usually, this state results when the forward reaction proceeds at the same rate as the reverse reaction. The reaction rates of the forward and backward reactions are generally not zero, but equal. Thus, there are no net changes in the concentrations of the reactant(s) and product(s). Such a state is known as dynamic equilibrium.