1. Carbon dioxide gas reacts with water to form carbonic acid. The presence of the carbonic acid is indicated by a color change using bromothymol blue indicator. You do not need to account for the color change reaction. Write the symbolic form of this chemical reaction. Note that the hydrogen in hydrogen carbonate behaves like a metal and takes a +1 charge. Classify this chemical reaction and write the general form of this type of reaction. Where did the carbon dioxide for this reaction come from? Why do you think we needed to use the color indicator to observe the presence of a reaction?

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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1. Carbon dioxide gas reacts with water to form carbonic acid. The presence of the carbonic acid is indicated by a color change using bromothymol blue indicator. You do not need to account for the color change reaction.

  • Write the symbolic form of this chemical reaction. Note that the hydrogen in hydrogen carbonate behaves like a metal and takes a +1 charge.
  • Classify this chemical reaction and write the general form of this type of reaction.
  • Where did the carbon dioxide for this reaction come from?
  • Why do you think we needed to use the color indicator to observe the presence of a reaction?

 

2. Aqueous hydrogen peroxide (dihydrogen dioxide) decomposes to form liquid water (dihydrogen monoxide) and oxygen gas. A mixture of yeast will be used as a catalyst for the reaction. Note that a catalyst increases the speed of a reaction but is not actually part of the chemical reaction, and so does not appear in the reaction equation.

Write the symbolic form of this chemical reaction. Remember, the yeast is just a catalyst and does NOT appear in the reaction equation

  • Classify this chemical reaction and write the general form of this type of reaction.
  • What could we do to verify that the gas released was, in fact, oxygen?
  • This reaction also produces a fair amount of heat energy. Why do you think this happens?
**Chemical Reaction Exploration: Carbon Dioxide and Water**

When carbon dioxide gas reacts with water, it forms carbonic acid. This reaction is evidenced by a color change using bromothymol blue, which indicates the presence of carbonic acid. Understanding these reactions and their indicators is crucial for chemistry students.

**Laboratory Exercise: Steps and Questions**

1. **Symbolic Representation of the Reaction**
   - Write the chemical equation for the reaction. Note that in hydrogen carbonate, the hydrogen acts similarly to a metal, carrying a +1 charge.

2. **Classification of the Reaction**
   - Determine the type of chemical reaction and describe the general form for this category.

3. **Source of Carbon Dioxide**
   - Investigate and explain the origin of the carbon dioxide used in this experiment.

4. **Purpose of the Color Indicator**
   - Discuss the necessity of using a color indicator like bromothymol blue to confirm the presence of the reaction.

This exercise allows students to apply theoretical knowledge to practical experiments, enhancing their understanding of chemical reactions and indicators.
Transcribed Image Text:**Chemical Reaction Exploration: Carbon Dioxide and Water** When carbon dioxide gas reacts with water, it forms carbonic acid. This reaction is evidenced by a color change using bromothymol blue, which indicates the presence of carbonic acid. Understanding these reactions and their indicators is crucial for chemistry students. **Laboratory Exercise: Steps and Questions** 1. **Symbolic Representation of the Reaction** - Write the chemical equation for the reaction. Note that in hydrogen carbonate, the hydrogen acts similarly to a metal, carrying a +1 charge. 2. **Classification of the Reaction** - Determine the type of chemical reaction and describe the general form for this category. 3. **Source of Carbon Dioxide** - Investigate and explain the origin of the carbon dioxide used in this experiment. 4. **Purpose of the Color Indicator** - Discuss the necessity of using a color indicator like bromothymol blue to confirm the presence of the reaction. This exercise allows students to apply theoretical knowledge to practical experiments, enhancing their understanding of chemical reactions and indicators.
**Aqueous hydrogen peroxide (dihydrogen dioxide) decomposes to form liquid water (dihydrogen monoxide) and oxygen gas.** A mixture of yeast will be used as a catalyst for the reaction. Note that a catalyst increases the speed of a reaction but is not actually part of the chemical reaction, and so does not appear in the reaction equation.

1. **Write the symbolic form of this chemical reaction.** Remember, the yeast is just a catalyst and does NOT appear in the reaction equation.

2. **Classify this chemical reaction and write the general form of this type of reaction.**

3. **What could we do to verify that the gas released was, in fact, oxygen?**

4. **This reaction also produces a fair amount of heat energy. Why do you think this happens?**
Transcribed Image Text:**Aqueous hydrogen peroxide (dihydrogen dioxide) decomposes to form liquid water (dihydrogen monoxide) and oxygen gas.** A mixture of yeast will be used as a catalyst for the reaction. Note that a catalyst increases the speed of a reaction but is not actually part of the chemical reaction, and so does not appear in the reaction equation. 1. **Write the symbolic form of this chemical reaction.** Remember, the yeast is just a catalyst and does NOT appear in the reaction equation. 2. **Classify this chemical reaction and write the general form of this type of reaction.** 3. **What could we do to verify that the gas released was, in fact, oxygen?** 4. **This reaction also produces a fair amount of heat energy. Why do you think this happens?**
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