Solved: Write balanced chemical equations to represent the following observations. (In

Chapter 24, Problem 23.75

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Write balanced chemical equations to represent the following observations. (In some instances the complex involved has been discussed previously in the text.) (a) Solid silver chloride dissolves in an excess of aqueous ammonia. (b) The green complex\(\left[\mathrm{Cr}(\mathrm{en})_{2} \mathrm{Cl}_{2}\right] \mathrm{Cl}\), on treatment with water over a long time, converts to a brown-orange complex. Reaction of \(\mathrm{AgNO}_{3}\) with a solution of the product precipitates 3 mol of AgCl per mole of Cr present. (Write two chemical equations.) (c) When an NaOH solution is added to a solution of \(\mathrm{Zn}\left(\mathrm{NO}_{3}\right)_{2}\), a precipitate forms. Addition of excess NaOH solution causes the precipitate to dissolve. (Write two chemical equations.) (d) A pink solution of \(\mathrm{Co}\left(\mathrm{NO}_{3}\right)_{2}\) turns deep blue on addition of concentrated hydrochloric acid.