1. Explain what is meant by the relative permittivity of a solvent. What information does this...

  

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1. Explain what is meant by the relative permittivity of a solvent. What information does this property provide in terms of assisting you to choose a solvent for a given reaction? 2. Discuss the following observations: (a) Zinc dissolves in a solution of sodium amide in liquid NH3 with liberation of H2; careful addition of ammonium iodide to the resulting solution produces a white precipitate which dissolves if an excess of ammonium iodide is added. (b) Addition of K to H2O results in a vigorous reaction; addition of K to liquid NH3 gives a bright blue solution, which over a period of time liberates H2. 1. Explain what is meant by the relative permittivity of a solvent. What information does this property provide in terms of assisting you to choose a solvent for a given reaction? 2. Discuss the following observations: (a) Zinc dissolves in a solution of sodium amide in liquid NH3 with liberation of H2; careful addition of ammonium iodide to the resulting solution produces a white precipitate which dissolves if an excess of ammonium iodide is added. (b) Addition of K to H2O results in a vigorous reaction; addition of K to liquid NH3 gives a bright blue solution, which over a period of time liberates H2.

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