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Concept explainers
Interpretation:
The lattice energies of rubidium iodide and potassium bromide are given. The reason why the lattice energy of potassium bromide is more exothermic than the lattice energy of rubidium iodide is to be determined.
Concept introduction: Lattice energy is the energy required to break an ionic solid and transform its atoms into gaseous ions. Lattice energy can also be defined as the energy released when gaseous ions combine to form an ionic solid. The square of distance is inversely proportional to the force of attraction. Therefore, lattice energy decreases down the group due to increase in atomic size.
To determine: Why the lattice energy of potassium bromide is more exothermic than the lattice energy of rubidium iodide.
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Chapter 9 Solutions
Principles of Chemistry: A Molecular Approach (3rd Edition)
- Don't used hand raiting and don't used Ai solutionarrow_forwardH2(g) + I2(g) ⇔ 2HI(g) Using the above equilibrium, find the equilibrium concentration of H2 if the intial concentration of both H2 and I2 are 2.0. K at this temperature is 55.64.arrow_forwardfind K, the equilibrium constant, if the inital concentration of SO3 is 0.166 M, and the equilibrium concentration of O2 is 0.075 M. 2SO3 (g) ⇌ 2SO2 (g) + O2 (g)arrow_forward
- Q4: Rank the relative nucleophilicity of halide ions in water solution and DMF solution, respectively. F CI Br | Q5: Determine which of the substrates will and will not react with NaSCH3 in an SN2 reaction to have a reasonable yield of product. NH2 Br Br Br OH Brarrow_forwardQ7: Rank the following groups in order of basicity, nucleophilicity, and leaving group ability. a) H₂O, OH, CH3COOT b) NH3, H₂O, H₂Sarrow_forwardQ8: Rank the following compounds in order of increasing reactivity in a nucleophilic substitution reaction with CN as the nucleophile. Br A B NH2 LL F C D OH CI LLI E Q9: Complete the missing entities for following reactions (e.g., major product(s), reactants, and/or solvents) for the SN2 reactions to occur efficiently. Include curved-arrow mechanism for reactions a) to d). a) H "Cl D + -OCH 3 Page 3 of 5arrow_forward
- Q10: (a) Propose a synthesis of C from A. (b) Propose a synthesis of C from B. Br Br ...\SCH 3 A B Carrow_forward9: Complete the missing entities for following reactions (e.g., major product(s), reactants, and/or solvents) for the SN2 reactions to occur efficiently. Include curved-arrow mechanism for reactions a) to d).arrow_forwardComplete the missing entities for following reactions (e.g., major product(s), reactants, and/or solvents) for the SN2 reactions to occur efficiently. Include curved-arrow mechanism for reactions a) to d).arrow_forward
- QUESTION 3: Provide the synthetic steps that convert the starting material into the product (no mechanism required). HO OH NH CH3 multiple steps 요요 H3Carrow_forwardQ6: Predict the effect of the changes given on the rate of the reaction below. CH3OH CH3Cl + NaOCH3 → CH3OCH3 + NaCl a) Change the substrate from CH3CI to CH31: b) Change the nucleophile from NaOCH 3 to NaSCH3: c) Change the substrate from CH3CI to (CH3)2CHCI: d) Change the solvent from CH3OH to DMSO.arrow_forwardQ3: Arrange each group of compounds from fastest SN2 reaction rate to slowest SN2 reaction rate. a) CI Cl فيكم H3C-Cl A B C D Br Br b) A B C Br H3C-Br Darrow_forward
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