**Title: The Reactivity of Gold with Aqua Regia****Overview:**Gold has always been a highly prized metal, and it has been widely used from the beginning of history as a store of value. It does not rust like iron and does not become tarnished like silver. It is so chemically inert that it will not react with even the strongest concentrated acids. But it can be dissolved in aqua regia, a freshly-prepared mixture of concentrated nitric acid (HNO₃) and hydrochloric acid (HCl) in a 1:3 ratio.**Historical Anecdote:**When Germany invaded Denmark in World War II, the Hungarian chemist George de Hevesy dissolved the gold Nobel Prizes of Max von Laue and James Franck in aqua regia to prevent the Nazis from stealing them. He placed the jar with the solution on a shelf in his laboratory and, after the war, precipitated the gold from the acid solution and returned it to the Royal Swedish Academy of Sciences and the Nobel Foundation, who recast the medals and again presented them to Laue and Franck.**Chemical Reaction:**The unbalanced equation for the reaction of gold with aqua regia is given. Your task is to add the stoichiometric coefficients to the equation to balance it.**Unbalanced Equation:**\[ \text{Au(s)} + \text{HNO}_3 \text{(aq)} + \text{HCl(aq)} \rightarrow \text{HAuCl}_4 \text{(aq)} + \text{NO}_2 \text{(g)} + \text{H}_2\text{O(l)} \]**Instructions:**To balance the equation, follow these steps:1. **Count the Number of Atoms:** - List the number of atoms for each element in the reactants and products. 2. **Balance Hydrogen and Oxygen Atoms:** - Start with balancing elements that appear in only one reactant and one product. 3. **Adjust Coefficients:** - Use whole numbers to balance the atoms on both sides of the equation.By understanding and balancing this chemical reaction, students can gain insights into the unique chemical properties of gold and the historical significance of its reactions.

Gold react with hydrogen chloride and nitric acid to produce hydrogen tetrachloridoaurate, nitrogen…

The unbalanced equation for the reaction of gold with aqua regia is given. Add the stoichiometric coefficients to the equation to balance it. equation: Au(s) + HNO, (aq) + HCl(aq) - HAUCI, (aq) + NO,2(g) + H,O(1)

The unbalanced equation for the reaction of gold with aqua regia is given. Add the stoichiometric coefficients to the equation to balance it. equation: Au(s) + HNO, (aq) + HCl(aq) - HAUCI, (aq) + NO,2(g) + H,O(1)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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