Question 1

Which of the following statements is true?

Accepted Answer

A)  Lowering the concentration of the reactants increases the number of collisions. 
B)  Increasing the concentration of the reactants decreases the rate of reaction. 
C)  Increasing the collision rate increases the rate of the reaction. 
D)  Decreasing the collision rate occurs at higher temperatures. 
A)  Lowering the concentration of the reactants increases the number of collisions. 
B)  Increasing the concentration of the reactants decreases the rate of reaction. 
C)  Increasing the collision rate increases the rate of the reaction. 
D)  Decreasing the collision rate occurs at higher temperatures.

Question 2

The difference in energy between the reactants and products in a chemical reaction is called ________.

Accepted Answer

A)  the heat of reaction 
B)  the activation energy 
C)  the energy of products 
D)  either B or C 
A)  the heat of reaction 
B)  the activation energy 
C)  the energy of products 
D)  either B or C

Question 3

Calculate a value for ΔErxn for a chemical reaction, if the reactants have an energy of +300 kJ/mol and the products have an energy of +100 kJ/mol. Is this reaction exothermic or endothermic?

Accepted Answer

-200 kJ/mo

Question 4

For an exothermic reaction, the energy level of the products is lower than the energy level of the reactants..

Accepted Answer

A) True 
 B)False

Question 5

The order of the reaction with respect to A, B, and the total order respectively is ________. A + B → Products
Rate = k[A][B]

Accepted Answer

A)  1, 1, 1 
B)  1, 1, 2 
C)  1, 2, 2 
D)  1, 2, 3 
A)  1, 1, 1 
B)  1, 1, 2 
C)  1, 2, 2 
D)  1, 2, 3

Question 6

Which of the following is not a substitution reaction?

Accepted Answer

A)  NaOH + HCl→ NaCl + H₂O 
B)  AgNO₃ + NaCl → NaNO₃ + AgCl 
C)  2Fe + O₂ → 2FeO 
D)  CH₃OH + HCl → CH₃Cl + H₂O 
A)  NaOH + HCl→ NaCl + H₂O 
B)  AgNO₃ + NaCl → NaNO₃ + AgCl 
C)  2Fe + O₂ → 2FeO 
D)  CH₃OH + HCl → CH₃Cl + H₂O

Which of the following statements is true?

The difference in energy between the reactants and products in a chemical reaction is called ________.

Calculate a value for ΔErxn for a chemical reaction, if the reactants have an energy of +300 kJ/mol and the products have an energy of +100 kJ/mol. Is this reaction exothermic or endothermic?

For an exothermic reaction, the energy level of the products is lower than the energy level of the reactants..

The order of the reaction with respect to A, B, and the total order respectively is ________. A + B → Products Rate = k[A][B]

Which of the following is not a substitution reaction?

What Is Chemistry

The Numerical Side of Chemistry

The Evolution of Atomic Theory

The Modern Model of the Atom

Chemical Bonding and Nomenclature

The Shape of Molecules

Intermolecular Forces and the Phases of Matter

Chemical Reactions

Stoichiometry and the Mole

Electron Transfer in Chemical Reactions

What If There Were No Intermolecular Forces - the Ideal Gas

Solutions

Chemical Equilibrium

Electrolytes, Acids, and Bases

Nuclear Chemistry

The Chemistry of Carbon

Synthetic and Biological Polymers

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Exam 13: When Reactants Turn Into Products

Which of the following statements is true?

The difference in energy between the reactants and products in a chemical reaction is called ________.

Calculate a value for ΔErxn for a chemical reaction, if the reactants have an energy of +300 kJ/mol and the products have an energy of +100 kJ/mol. Is this reaction exothermic or endothermic?

For an exothermic reaction, the energy level of the products is lower than the energy level of the reactants..

The order of the reaction with respect to A, B, and the total order respectively is ________. A + B → Products Rate = k[A][B]

Which of the following is not a substitution reaction?

What Is Chemistry

The Numerical Side of Chemistry

The Evolution of Atomic Theory

The Modern Model of the Atom

Chemical Bonding and Nomenclature

The Shape of Molecules

Intermolecular Forces and the Phases of Matter

Chemical Reactions

Stoichiometry and the Mole

Electron Transfer in Chemical Reactions

What If There Were No Intermolecular Forces - the Ideal Gas

Solutions

Chemical Equilibrium

Electrolytes, Acids, and Bases

Nuclear Chemistry

The Chemistry of Carbon

Synthetic and Biological Polymers

Filters