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Chemistry Daily 10’s Week 18
1 1. If a piece of aluminum is heated from 30.0 C to 50.0 C, what is the value of ? a. 0.0K b. 20.0K c K d. Cannot be determined from the information given
2. How much energy does a copper sample absorb as energy in the form of heat if its specific heat is J/(g·°C), its mass is 8.00 g, and it is heated from 10.0°C to 40.0°C? a J/(g·°C) b J c J d J/(g·°C)
2 1. The minimum energy required for an effective collision is calleda. energy of enthalpy. b. activation energy. c. free energy. d. kinetic energy.
2. In an energy-profile graph, the activated complex is represented at thea. left end of the curve. b. right end of the curve. c. bottom of the curve. d. top of the curve.
3 1. What takes place in an activated complex? a. Bonds form.b. Bonds break. c. Some bonds form and other bonds break. d. A catalyst is produced.
2. Reaction rate depends upona. both collision frequency and efficiency. b. average kinetic energy. c. collision efficiency. d. average potential energy.
4 Which process is used to speed up chemical reactions? a. calorimetryb. catalysis c. activation d. inhibition
2. For a cost-sensitive reaction, catalysts can bea. thrown away. b. used as reaction inhibitors. c. regenerated and reused. d. used as reaction indicators.
5 1. If a chemical reaction proceeds in a sequence of steps, the slowest step is called a. the kinetic step. b. the constant step. c. the problem step. d. the rate-determining step.
2. In a single step reaction represented by the equation A + B 2C, the rate law for the forward one-step reaction is a. R = k[2C]. b. R = k[A][B]. c. R = k[2C]2 . d. R=k[A]2[B].
Answers & Standards 1.1 b - sc6b 1.2 c - sc6b 2.1 b – sc5c2.2 d – sc5c 3.1 c – sc5c 3.2 a – sc5a 4.1 b – sc5b 4.2 c – sc5b 5.1 d – sc5b 5.2 a – sc5b
Energy in a Reaction (cont.) (p.17). Review Draw a graph of enthalpy vs. reaction proceeds for this rxn: R P + 60 kJ.
Chapter 17 - Chemical Kinetics
Chemical Kinetics Reaction rate - the change in concentration of reactant or product per unit time.
Reaction Energy and Reaction Kinetics
Section 7.2—Calorimetry & Heat Capacity
Enthalpy Changes in Chemical Reactions. Enthalpy Enthalpy (H) The “heat content” of a substance It is the total KE and PE of a substance at constant pressure.
Kinetics (Reaction Rate)
Chemical Kinetics An Introduction S 2 O I - I S O C O ( g ) + N O 2 ( g ) C O 2 ( g ) + N O H 2 O 2 ( a q ) H 2 O ( l ) + O.
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TEMPERATURE AND REACTION RATE SCH4U Unit 3: Energy and Kinetics.
UNIT 3: Energy Changes and Rates of Reaction
Potential Energy Diagrams Made Easy Exothermic followed by Endothermic.
Physical Chemistry II CHEM 3320.
Unit 11: Energy in Chemical Reactions. The Universe Is made up of the system and the surroundings Energy can be transferred between the system and the.
Reaction Rates And Chemical equilibrium. Chemical Kinetics The area of chemistry that concerns reaction rates. However, only a small fraction of collisions.
Thermochemistry and Kinetics. Kinetics The branch of chemistry that is concerned with reaction rates and reaction mechanisms Reaction rate:Reaction rate:
Chemical Kinetics Chemical Energy— results from the particular arrangement of atoms in a chemical compound; heat and light produced in this reaction due.
Activation Energy and Catalyst. Temperature and Rate Generally, as temperature increases, so does the reaction rate. This is because k is temperature.
RATES OF REACTION CHAPTER 17. CHEMICAL KINETICS Branch of chemistry concerned with rates and mechanisms of chemical reactions. Reaction Rate- The speed.
Thermochemistry Study of the transfer of energy in chemical reactions.
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