Question 1

The energy required to start some spontaneous processes is called ___ .

Accepted Answer

A)  internal energy 
B)  collision energy 
C)  free energy 
D)  activation energy 
A)  internal energy 
B)  collision energy 
C)  free energy 
D)  activation energy

Question 2

Butane,C4H10,burning in air,is an example of a substance combining with oxygen to produce CO2 and H2O.If pure oxygen were to be supplied,the rate of combustion would increase significantly.Then there is more energy given off when 10 g of butane burns in pure oxygen,rather than in air.

Accepted Answer

A) True 
 B)False

Question 3

Reactions that have a low energy of activation tend to proceed at a high rate.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following is the proper equilibrium expression for the reaction shown below?
2A + B  
C + heat

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
A) 
  
B) 
  
C) 
  
D)

Question 5

A room filled with a 2:1 mixture of hydrogen and oxygen gases can be safely inhaled.However,with a single spark,it can react explosively.Since the explosion would be considered a spontaneous process,what did the spark provide?

Accepted Answer

A)  endothermic energy 
B)  exothermic energy 
C)  free energy 
D)  activation energy 
A)  endothermic energy 
B)  exothermic energy 
C)  free energy 
D)  activation energy

Question 6

An inhibitor will have what effect on a reaction?

Accepted Answer

A)  increase the activation energy 
B)  lower the activation energy 
C)  slow the reaction down 
D)  lower the amount of product produced 
A)  increase the activation energy 
B)  lower the activation energy 
C)  slow the reaction down 
D)  lower the amount of product produced

Question 7

Enthalpy always increases with increasing randomness.

Accepted Answer

A) True 
 B)False

The energy required to start some spontaneous processes is called ___ .

Butane,C₄H₁₀,burning in air,is an example of a substance combining with oxygen to produce CO₂ and H₂O.If pure oxygen were to be supplied,the rate of combustion would increase significantly.Then there is more energy given off when 10 g of butane burns in pure oxygen,rather than in air.

Reactions that have a low energy of activation tend to proceed at a high rate.

Which of the following is the proper equilibrium expression for the reaction shown below? 2A + B C + heat

A room filled with a 2:1 mixture of hydrogen and oxygen gases can be safely inhaled.However,with a single spark,it can react explosively.Since the explosion would be considered a spontaneous process,what did the spark provide?

An inhibitor will have what effect on a reaction?

Enthalpy always increases with increasing randomness.

Matter, measurements, and Calculations

Atoms and Molecules

Electronic Structure and the Periodic Law

Forces Between Particles

Chemical Reactions

The States of Matter

Solutions and Colloids

Acids,bases,and Salts

Radioactivity and Nuclear Processes

Organic Compounds: Alkanes

Unsaturated Hydrocarbons

Alcohols, phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Esters

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Nucleic Acids and Protein Synthesis

Nutrition and Energy for Life

Carbohydrate Metabolism

Lipid and Amino Acid Metabolism

Body Fluids

Filters

Exam 8: Reaction Rates and Equilibrium

The energy required to start some spontaneous processes is called ___ .

Butane,C4H10,burning in air,is an example of a substance combining with oxygen to produce CO2 and H2O.If pure oxygen were to be supplied,the rate of combustion would increase significantly.Then there is more energy given off when 10 g of butane burns in pure oxygen,rather than in air.

Reactions that have a low energy of activation tend to proceed at a high rate.

Which of the following is the proper equilibrium expression for the reaction shown below? 2A + B C + heat

A room filled with a 2:1 mixture of hydrogen and oxygen gases can be safely inhaled.However,with a single spark,it can react explosively.Since the explosion would be considered a spontaneous process,what did the spark provide?

An inhibitor will have what effect on a reaction?

Enthalpy always increases with increasing randomness.

Matter, measurements, and Calculations

Atoms and Molecules

Electronic Structure and the Periodic Law

Forces Between Particles

Chemical Reactions

The States of Matter

Solutions and Colloids

Acids,bases,and Salts

Radioactivity and Nuclear Processes

Organic Compounds: Alkanes

Unsaturated Hydrocarbons

Alcohols, phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Esters

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Nucleic Acids and Protein Synthesis

Nutrition and Energy for Life

Carbohydrate Metabolism

Lipid and Amino Acid Metabolism

Body Fluids

Filters

Butane,C₄H₁₀,burning in air,is an example of a substance combining with oxygen to produce CO₂ and H₂O.If pure oxygen were to be supplied,the rate of combustion would increase significantly.Then there is more energy given off when 10 g of butane burns in pure oxygen,rather than in air.