Thermochemistry and Energy Diagrams

The line that represents the activation energy (E_a) of this reaction is
1. Line A
2. Line B
3. Line C
4. Line D
5. Line E
The line that represents the heat of reaction (ΔH, or ΔE) of this reaction is
1. Line A
2. Line B
3. Line C
4. Line D
5. Line E
The heat of reaction (ΔH, or ΔE) of this reaction is
1. 80 kJ
2. -80 kJ
3. 160 kJ
4. 240 kJ
5. -160 kJ
The activation energy (E_a) of this reaction is
1. 160 kJ
2. 80 kJ
3. 240 kJ
4. 40 kJ
5. - 80 kJ
In the reaction depicted in the diagram above,
1. the energy content of the reactants is greater than the energy content of the products
2. the energy content of the products is greater than the energy content of the reactants
3. the energy content of the reactants is the same as the energy content of the products
If you were holding in your hand a test tube in which the reaction above is taking place, it would
1. feel cold, because energy is being absorbed
2. feel hot, because energy is being absorbed
3. feel cold, because energy is being released
4. feel hot, because energy is being released
If a catalyst were added to this reaction, which lines would change?
1. Line A
2. Line B
3. Line C
4. Line D
5. Line E
The line that represents the activation energy (E_a) of this reaction is
1. Line A
2. Line B
3. Line C
4. Line D
The line that represents the heat of reaction (ΔH, or ΔE) of this reaction is
1. Line A
2. Line B
3. Line C
4. Line D
The heat of reaction (ΔH, or ΔE) of this reaction is
1. 80 kJ
2. -80 kJ
3. 160 kJ
4. 240 kJ
5. -160 kJ
The activation energy (E_a) of this reaction is
1. 160 kJ
2. 80 kJ
3. 240 kJ
4. 40 kJ
5. - 80 kJ
In the reaction depicted in the diagram above,
1. the energy content of the reactants is greater than the energy content of the products
2. the energy content of the products is greater than the energy content of the reactants
3. the energy content of the reactants is the same as the energy content of the products
If you were holding in your hand a test tube in which the reaction above is taking place, it would
1. feel cold, because energy is being absorbed
2. feel hot, because energy is being absorbed
3. feel cold, because energy is being released
4. feel hot, because energy is being released
If a catalyst were added to this reaction, which lines would change?
1. Line A
2. Line B
3. Line C
4. Line D
The reaction whose energy diagram is shown here is
1. endothermic
2. exothermic
3. isothermic
The reaction whose energy diagram is shown here is
1. endothermic
2. exothermic
3. isothermic