/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 42 Classify each of the following a... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 7: Problem 42

Classify each of the following as a combination, decomposition, single replacement, double replacement, or combustion reaction: a. \(\mathrm{H}_{2}(g)+\mathrm{Br}_{2}(l) \longrightarrow 2 \mathrm{HBr}(g)\) b. \(\mathrm{AgNO}_{3}(a q)+\mathrm{NaCl}(a q) \longrightarrow \mathrm{AgCl}(s)+\mathrm{NaNO}_{3}(a q)\) c. \(2 \mathrm{H}_{2} \mathrm{O}_{2}(a q) \longrightarrow 2 \mathrm{H}_{2} \mathrm{O}(l)+\mathrm{O}_{2}(g)\) d. \(\mathrm{Zn}(s)+\mathrm{CuCl}_{2}(a q) \longrightarrow \mathrm{Cu}(s)+\mathrm{ZnCl}_{2}(a q)\) e. \(\mathrm{C}_{5} \mathrm{H}_{8}(g)+7 \mathrm{O}_{2}(g) \stackrel{\Delta}{\longrightarrow} 5 \mathrm{CO}_{2}(g)+4 \mathrm{H}_{2} \mathrm{O}(g)\)

Short Answer

Expert verified
a. Combinationb. Double Replacementc. Decompositiond. Single Replacemente. Combustion

Step by step solution

01

Identify Combination Reactions

Combination reactions occur when two or more reactants combine to form a single product. Examine each reaction to see if it fits this pattern.
02

Analyze \(\mathrm{H}_{2}(g)+\mathrm{Br}_{2}(l) \longrightarrow 2 \mathrm{HBr}(g)\)

In this reaction, hydrogen gas (\(\mathrm{H}_{2}\)) and bromine liquid (\(\mathrm{Br}_{2}\)) combine to form hydrogen bromide gas (\(\mathrm{HBr}\)). This fits the pattern of a combination reaction.
03

Identify Double Replacement Reactions

Double replacement reactions involve the exchange of ions between two compounds. Check each reaction to see if it is characterized by this exchange.
04

Analyze \(\mathrm{AgNO}_{3}(a q)+\mathrm{NaCl}(a q) \longrightarrow \mathrm{AgCl}(s)+\mathrm{NaNO}_{3}(a q)\)

In this reaction, silver nitrate (\(\mathrm{AgNO}_3\)) and sodium chloride (\(\mathrm{NaCl}\)) react to form silver chloride (\(\mathrm{AgCl}\)) and sodium nitrate (\(\mathrm{NaNO}_3\)). The ions have been exchanged, fitting the double replacement pattern.
05

Identify Decomposition Reactions

Decomposition reactions occur when a single compound breaks down into two or more products. Examine each reaction for this characteristic.
06

Analyze \(2 \mathrm{H}_{2} \mathrm{O}_{2}(a q) \longrightarrow 2 \mathrm{H}_{2} \mathrm{O}(l)+\mathrm{O}_{2}(g)\)

In this reaction, hydrogen peroxide (\(\mathrm{H}_2\mathrm{O}_2\)) decomposes into water (\(\mathrm{H}_2\mathrm{O}\)) and oxygen (\(\mathrm{O}_2\)). This fits the definition of a decomposition reaction.
07

Identify Single Replacement Reactions

Single replacement reactions involve one element replacing another in a compound. Examine each reaction to see if it meets this criterion.
08

Analyze \(\mathrm{Zn}(s)+\mathrm{CuCl}_{2}(a q) \longrightarrow \mathrm{Cu}(s)+\mathrm{ZnCl}_{2}(a q)\)

In this reaction, zinc (\(\mathrm{Zn}\)) replaces copper (\(\mathrm{Cu}\)) in copper(II) chloride (\(\mathrm{CuCl}_2\)), forming zinc chloride (\(\mathrm{ZnCl}_2\)) and copper metal (\(\mathrm{Cu}\)). This is a single replacement reaction.
09

Identify Combustion Reactions

Combustion reactions involve a hydrocarbon reacting with oxygen to produce carbon dioxide and water. Check if any reaction fits this pattern.
10

Analyze \( \mathrm{C}_{5} \mathrm{H}_{8}(g)+7 \mathrm{O}_{2}(g) \stackrel{\Delta}{\longrightarrow} 5 \mathrm{CO}_{2}(g)+4 \mathrm{H}_{2} \mathrm{O}(g)\)

In this reaction, pentene (\(\mathrm{C}_5\mathrm{H}_8\)) reacts with oxygen (\(\mathrm{O}_2\)) to produce carbon dioxide (\(\mathrm{CO}_2\)) and water (\(\mathrm{H}_2\mathrm{O}\)). This is a combustion reaction.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Combination Reaction
A combination reaction occurs when two or more reactants join together to form a single product. Imagine combining ingredients to make a cake - the cake is your single product formed from multiple ingredients.
For example, in the reaction \(\text{H}_2(g) + \text{Br}_2(l) \rightarrow 2 \text{HBr}(g)\), hydrogen gas and bromine liquid react to form hydrogen bromide gas. This results in the combination of two substances into one product, fitting the combination reaction criteria.
Decomposition Reaction
Decomposition reactions involve a single compound breaking down into two or more simpler substances. Think of it like a broken vase - the single vase splits into several pieces.
An example is \(2 \text{H}_2 \text{O}_2(aq) \rightarrow 2 \text{H}_2 \text{O}(l) + \text{O}_2(g)\). In this reaction, hydrogen peroxide (\( \text{H}_2\text{O}_2 \)) decomposes into water (\( \text{H}_2 \text{O} \)) and oxygen (\( \text{O}_2 \)). This is a classic example of a decomposition reaction.
Single Replacement Reaction
Single replacement reactions occur when one element replaces another in a compound. Think of it like switching dance partners - one partner leaves and another takes their place.
For instance, in the reaction \( \text{Zn}(s) + \text{CuCl}_2(aq) \rightarrow \text{Cu}(s) + \text{ZnCl}_2(aq)\), zinc metal (\( \text{Zn} \)) replaces copper (\( \text{Cu} \)) in copper(II) chloride (\( \text{CuCl}_2 \)), forming zinc chloride (\( \text{ZnCl}_2 \)) and copper metal (\( \text{Cu} \)). This clearly shows the characteristics of a single replacement reaction.
Double Replacement Reaction
Double replacement reactions involve the exchange of ions between two compounds. It鈥檚 like swapping dance partners - both partners end up with new partners.
In the reaction \( \text{AgNO}_3(aq) + \text{NaCl}(aq) \rightarrow \text{AgCl}(s) + \text{NaNO}_3(aq)\), silver nitrate (\( \text{AgNO}_3 \)) and sodium chloride (\( \text{NaCl} \)) react to form silver chloride (\( \text{AgCl} \)) and sodium nitrate (\( \text{NaNO}_3 \)). The ions swap places, which is the hallmark of a double replacement reaction.
Combustion Reaction
Combustion reactions involve a hydrocarbon reacting with oxygen to produce carbon dioxide and water. This is similar to burning fuel, where the fuel (hydrocarbon) reacts with oxygen to produce energy, carbon dioxide, and water.
An example is the reaction \( \text{C}_5 \text{H}_8(g) + 7 \text{O}_2(g) \stackrel{\Delta}{\longrightarrow} 5 \text{CO}_2(g) + 4 \text{H}_2 \text{O}(g)\). Here, pentene (\( \text{C}_5 \text{H}_8 \)) reacts with oxygen (\( \text{O}_2 \)) to produce carbon dioxide (\( \text{CO}_2 \)) and water (\( \text{H}_2\text{O} \)). This is a classic combustion reaction, recognizable by the production of CO2 and H2O.

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

The equation for the formation of silicon tetrachloride from silicon and chlorine is (7.9) $$ \mathrm{Si}(s)+2 \mathrm{Cl}_{2}(g) \longrightarrow \mathrm{SiCl}_{4}(g)+157 \mathrm{kcal} $$ a. Is the formation of \(\mathrm{SiCl}_{4}\) an endothermic or exothermic reaction? b. Is the energy of the product higher or lower than the energy of the reactants?

Classify each of the following as exothermic or endothermic: a. \(\mathrm{CH}_{4}(g)+2 \mathrm{O}_{2}(g) \stackrel{\Delta}{\longrightarrow} \mathrm{CO}_{2}(g)+2 \mathrm{H}_{2} \mathrm{O}(g)+802 \mathrm{~kJ}\) b. \(\mathrm{Ca}(\mathrm{OH})_{2}(s)+65.3 \mathrm{~kJ} \longrightarrow \mathrm{CaO}(s)+\mathrm{H}_{2} \mathrm{O}(l)\) c. \(2 \mathrm{Al}(s)+\mathrm{Fe}_{2} \mathrm{O}_{3}(s) \longrightarrow \mathrm{Al}_{2} \mathrm{O}_{3}(s)+2 \mathrm{Fe}(s)+850 \mathrm{~kJ}\)

Calculate the molar mass for each of the following: a. \(\mathrm{C}_{4} \mathrm{H}_{8} \mathrm{O}_{4}\) b. \(\mathrm{Ga}_{2}\left(\mathrm{CO}_{3}\right)_{3}\) c. \(\mathrm{KBrO}_{4}\)

Ammonium sulfate, \(\left(\mathrm{NH}_{4}\right)_{2} \mathrm{SO}_{4},\) is used in fertilizers to provide nitrogen for the soil. (7.1,7.2) a. How many formula units are in 0.200 mole of ammonium sulfate? b. How many \(\mathrm{H}\) atoms are in 0.100 mole of ammonium sulfate? c. How many moles of ammonium sulfate contain \(7.4 \times 10^{25}\) atoms of \(\mathrm{N} ?\) d. What is the molar mass of ammonium sulfate?

Classify each of the following as exothermic or endothermic: a. The energy level of the products is lower than that of the reactants. b. In the body, the synthesis of proteins requires energy. c. A reaction absorbs \(125 \mathrm{~kJ}\).
See all solutions

Recommended explanations on Chemistry Textbooks

Organic Chemistry

Read Explanation

Nuclear Chemistry

Read Explanation

Kinetics

Read Explanation

Physical Chemistry

Read Explanation

The Earths Atmosphere

Read Explanation

Inorganic Chemistry

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.