2. [12 marks] Consider the dimerization reaction A + B = C. a. [3 marks] Sketch the free energy landscape of this reaction in a "reaction coordinate", assuming there is a barrier (AG+) to the forward and reverse reactions, as is often the case, and the bond (free) energy is negative. What is the physical origin of AG+? It arises from various factors, so include what you think is appropriate. [C] = b. [2 marks] The equilibrium concentrations are related to each other via Keq [A][B] = e kBT, where-ε is the bond (free) energy of C. How is - related to AG+? c. [7 marks] Suppose you are told that total standard free energy change of reaction AG° is equivalent to the magnitude of the bond free energy & (bonus +2 marks if you can explain why). Assume [A] = [B]0 = 10-9 as the initial concentrations in M sites and that Keq = 1010. Calculate the equilibrium concentrations in M as well as the corresponding AG° in kcal/mol.

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Interpret Lewis symbols for atoms and ions. (a) How many dots are there in the Lewis symbol for P (phosphorus)? (b) The following Lewis symbol represents the valence electron configuration of an ion of a main-group element. Identify the element in period 3 that leads to the ion with this valence electron configuration. A Check & Submit Answer Show Approach

Each sketch below shows three objects with an electric charge. In each case, decide whether there is a net force acting on the object outlined in green. If there is a net force, decide whether it pushes the green-ring object to the left or right. Then select the appropriate button under the sketch. For example, if there is a net force pushing the green-ring object in the first sketch to the left, select the left button under the first sketch. If there is no net force on the green-ring object in the second sketch, select the middle button under the second sketch. And so on. I Don't Know Submit X ✪ n tv © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center Acce A zoom

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1.78 (a) Add curved arrows to show how the starting material A is converted to the product B. (b) Draw all reasonable resonance structures for B. (c) Draw the resonance hybrid for B. A В

Scenario Three Read the following extract: "Atmospheric ions are electrically charged particles which occur naturally in the atmosphere. They form in the upper atmospheric layers mainly because of the action of ultraviolet radiation from the sun, as well as in lower atmospheric layers as a result of radioactive radiation and cosmic rays. These cause ionisation of neutral molecules or atoms. As a result, ions are formed. These ions almost instantaneously combine to form molecules with ionic bonds." The extract mentions 'ions'. Explain what these are in tems of their electronic structure, and how this is different from an atom. The extract mentions 'ionic bonds'. Explain what these are, and how they form in terms of electron structure.

Each sketch below shows three objects with an electric charge. In each case, decide whether there is a net force acting on the object outlined in green. If there is a net force, decide whether it pushes the green-ring object to the left or right. Then select the appropriate button under the sketch. For example, if there is a net force pushing the green-ring object in the first sketch to the left, select the left button under the first sketch. If there is no net force on the green-ring object in the second sketch, select the middle button under the second sketch. And so on. ola -2 +3 -2 -2 I Don't Know Submit 2022 McGraw Hill LLC. AL Riahts Reserved. Terms of Use I Privacy Center Accessibility etv 16 Dl 18 80 & % 6 7 8O 4.