In an endothermic reaction, energy is absorbed by the reactants as they convert to products.
First, the reactants gain sufficient energy to go to a transition state by acquiring energy called 'activation energy'.
Hence, the difference in energy between the reactants and transition state is the activation energy Ea.
If a reactant molecule has energy equal to or greater than activation energy, it can cross the activation barrier and convert to product. The difference in energy between the product and the reactant is termed as If the product is higher in energy than the reactant, then net energy is absorbed by the reaction from the surrounding meaning, the value of is positive for the endothermic reaction.
Hence, we can draw the reaction profile diagram with energy in y axis and reaction progress in x axis as follows:
3. Energy Diagrams: Using the axes below, draw an energy diagram for an endothermic reaction. Label...
2. Oxidation and Reduction: Answer the following questions by circling the appropriate choice. [A] A substance is oxidized when it... gains electrons loses electrons [B] A substance is reduced when it... gains electrons loses electrons (C) In this reaction, identify which reactant was oxidized and which product was reduced. 2 Fe2O3 + 3 S→ 4 Fe + 3 SO2 3. Energy Diagrams: Using the axes below, draw an energy diagram for an endothermic reaction. Label the following in your diagram:...
Based on the energy diagram below: + + a) Label the axes of the graph (energy is in units of mo! b) What is the energy of the reactants? c) What is the energy of the products? d) What is the energy of the transition state? e) Calculate the activation energy of the forward reaction (reactants products) f) Calculate the activation energy of the reverse reaction (products reactants): g) Calculate the total energy of the forward reaction: h) Calculate the...
Energy diagrams 7. Draw an energy diagram for the reaction below. Label the axes, reactants, products, intermediates, transition state, AG, AG 5 points D (BC are intermediates!) Step A™B is rate-limiting and A three-reaction where AG®= -13 kJ A B C the energies of the species are C>B> A>D.
3. Please answer the following questions concerning the two energy diagrams depicted below. (10 pts) Energy Diagram A 20 Energy Diagram B (a) Do the energy diagrams represent concerted or stepwise reactions? (b) Label the axes, the reactants (R), products (P), any intermediates (1), activation energy (E.), enthalpy of reaction (AH"), and transition state(s) (TS) on the above diagrams. (c) Do the energy diagrams represent endothermic or exothermic reactions? (d) Which energy diagram represents the faster reaction? (e) Which energy...
3. Please answer the following questions concerning the two energy diagrams depicted below. (10 pts) Energy Diagram A Energy Diagram B (a) Do the energy diagrams represent concerted or stepwise reactions? (b) Label the axes, the reactants (R), products (P), any intermediates (1), activation energy (E.), enthalpy of reaction (AH'), and transition state(s) (TS) on the above diagrams. (C) Do the energy diagrams represent endothermic or exothermic reactions? (d) Which energy diagram represents the faster reaction? (e) Which energy diagram...
10) Shown below is a reaction energy diagram. Answer the questions below using this diagram. Products NRG Reactants a) ( Reaction Pathway Is this reaction exothermic or endothermic? Draw on the diagram how Activation Energy (E) is measured. Draw on the diagram how the Enthalpy (AH) is measured. b) ( c) C
3. Please answer the following questions concerning the two energy diagrams depicted below. (10 pts) Energy Diagram A 30 25 20 15 10 0 10 15 20 25 Energy Diagram B 30 25 20 15 10 15 20 25 10 (a) Do the energy diagrams represent concerted or stepwise reactions? Concerted (b) Label the axes, the reactants (R), products (P), any intermediates (), activation energy (E), enthalpy of reaction (AH), and transition state(s) (TS) on the above diagrams. (c) Do...
Label the energy diagrams with the following: Reactants, Products, Activation energy (include arrow) Heat absorbed or Heat released (include arrow) Potential Energy Potential Energy Reaction Progress Exothermic reaction Reaction Progress Endothermic reaction
Model 1 - Potential Energy Diagrams 1) The energy (enthalpy) change of a reaction can be determined by the following expression: Activated Complex Transition State AH = Energy products - Energy reactants Activation Energy, E Reactants Consider the energy change for the reaction in Model 1 (the graph to the left). Potential Energy (kJ/mol) Energy change (AH) Products a) The energy change shown is (positive/negative). b) This reaction is (endothermic / exothermic). c) These (reactants / transition state) has more...
(8 points) On the diagram below, label the following: Reactants, Products, Activated Complex, Activation Energy (E.), and Enthalpy of the Reaction (AH). State if the reaction is endothermic or exothermic. Explain how you arrived at your answer. 250 2001 PE Reaction pathway