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)
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter8: Electron Configurations And Periodicity
Section: Chapter Questions
Problem 8.101QP
Related questions
Concept explainers
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
Question
![**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.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff00f8b75-2bac-4335-a200-62a4fa07a89d%2F850f179e-e52c-4371-9878-0fdac9429ca2%2Fbhnjemq_processed.png&w=3840&q=75)
Transcribed Image Text:**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.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Recommended textbooks for you
General Chemistry - Standalone book (MindTap Cour…
Chemistry
ISBN:
9781305580343
Author:
Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:
Cengage Learning
Introductory Chemistry: A Foundation
Chemistry
ISBN:
9781337399425
Author:
Steven S. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry: Principles and Practice
Chemistry
ISBN:
9780534420123
Author:
Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:
Cengage Learning
General Chemistry - Standalone book (MindTap Cour…
Chemistry
ISBN:
9781305580343
Author:
Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:
Cengage Learning
Introductory Chemistry: A Foundation
Chemistry
ISBN:
9781337399425
Author:
Steven S. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry: Principles and Practice
Chemistry
ISBN:
9780534420123
Author:
Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:
Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:
9781285199047
Author:
John W. Moore, Conrad L. Stanitski
Publisher:
Cengage Learning
Chemistry: Matter and Change
Chemistry
ISBN:
9780078746376
Author:
Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:
Glencoe/McGraw-Hill School Pub Co
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning