1. \(3 \, \text{Sr}(s) + \text{N}_2(g) \rightarrow \text{Sr}_3\text{N}_2(s)\)2. \(\text{CH}_4(g) + 2\text{O}_2(g) \rightarrow \text{CO}_2(g) + 2\text{H}_2\text{O}(g) + \text{energy}\)3. \(2 \, \text{Ag}(s) + \text{H}_2\text{S}(aq) \rightarrow \text{Ag}_2\text{S}(s) + \text{H}_2(g)\)4. \(\text{AgNO}_3(aq) + \text{NaCl}(aq) \rightarrow \text{AgCl}(s) + \text{NaNO}_3(aq)\)5. \(\text{CaCO}_3(s) \rightarrow \text{CaO}(s) + \text{CO}_2(g)\)**Explanation:**These are five chemical equations that represent various reactions involving solids (s), gases (g), and aqueous solutions (aq):1. **Sr and N Reaction**: Three strontium atoms react with nitrogen gas to form strontium nitride.2. **Methane Combustion**: Methane reacts with oxygen to produce carbon dioxide, water, and energy, indicative of combustion.3. **Silver and Hydrogen Sulfide**: Silver reacts with hydrogen sulfide in solution to produce silver sulfide and hydrogen gas.4. **Double Displacement Reaction**: Silver nitrate reacts with sodium chloride in aqueous solution, resulting in the formation of silver chloride and sodium nitrate.5. **Decomposition of Calcium Carbonate**: Calcium carbonate decomposes to form calcium oxide and carbon dioxide gas. The image lists five types of chemical reactions, each accompanied by a dropdown menu.1. **Decomposition**2. **Combustion**3. **Double replacement**: This option also shows the number "4."4. **Combination**5. **Single replacement**These types represent different categories of chemical reactions, each with distinct characteristics and products.

a) Precipitation reaction:In precipitation reaction an insoluble salt is formed by the reaction…

1. 3 Sr(s) + N₂(g) → Sr3 N₂(s) 2. CH4 (g) +202(g) → CO2(g) +2H₂O(g) + energy 3. 2 Ag(s) + H₂S(aq) → Ag2 S(s) + H₂(g) 4. AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq) 5. CaCO3(s) → CaO(s) + CO₂(g)

1. 3 Sr(s) + N₂(g) → Sr3 N₂(s) 2. CH4 (g) +202(g) → CO2(g) +2H₂O(g) + energy 3. 2 Ag(s) + H₂S(aq) → Ag2 S(s) + H₂(g) 4. AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq) 5. CaCO3(s) → CaO(s) + CO₂(g)

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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Concept explainers

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.

Question

1. \(3 \, \text{Sr}(s) + \text{N}_2(g) \rightarrow \text{Sr}_3\text{N}_2(s)\)

2. \(\text{CH}_4(g) + 2\text{O}_2(g) \rightarrow \text{CO}_2(g) + 2\text{H}_2\text{O}(g) + \text{energy}\)

3. \(2 \, \text{Ag}(s) + \text{H}_2\text{S}(aq) \rightarrow \text{Ag}_2\text{S}(s) + \text{H}_2(g)\)

4. \(\text{AgNO}_3(aq) + \text{NaCl}(aq) \rightarrow \text{AgCl}(s) + \text{NaNO}_3(aq)\)

5. \(\text{CaCO}_3(s) \rightarrow \text{CaO}(s) + \text{CO}_2(g)\)

**Explanation:**

These are five chemical equations that represent various reactions involving solids (s), gases (g), and aqueous solutions (aq):

1. **Sr and N Reaction**: Three strontium atoms react with nitrogen gas to form strontium nitride.
2. **Methane Combustion**: Methane reacts with oxygen to produce carbon dioxide, water, and energy, indicative of combustion.
3. **Silver and Hydrogen Sulfide**: Silver reacts with hydrogen sulfide in solution to produce silver sulfide and hydrogen gas.
4. **Double Displacement Reaction**: Silver nitrate reacts with sodium chloride in aqueous solution, resulting in the formation of silver chloride and sodium nitrate.
5. **Decomposition of Calcium Carbonate**: Calcium carbonate decomposes to form calcium oxide and carbon dioxide gas.

The image lists five types of chemical reactions, each accompanied by a dropdown menu.

1. **Decomposition**
2. **Combustion**
3. **Double replacement**: This option also shows the number "4."
4. **Combination**
5. **Single replacement**

These types represent different categories of chemical reactions, each with distinct characteristics and products.

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