Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692



Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 12, Problem 54E
Textbook Problem

When water is boiled, it is converted into a gas. When gasoline is burned, it too is converted into a gas. Explain the fundamental difference between these two processes.

Interpretation Introduction


The fundamental difference between the given processes by which gases are formed during the boiling of water and the burning of gasoline is to be explained.

Concept Introduction:

Covalent bonds are formed by the sharing of electrons between the two electronegative atoms and can be classified as polar or nonpolar on the basis of the atoms involved in them. The overall polarity of a molecule is dependent on the structure of the molecule. If the dipoles cancel each other, then the molecule is nonpolar.

Molecules that contain a hydrogen atom bonded to an electronegative element can undergo hydrogen bond formation. A hydrogen bond is formed between a hydrogen atom and an atom of nitrogen, oxygen or fluorine etc.

Certain fuels, such as, gasoline or diesel, which are a mixture of hydrocarbons, vaporize when burned, but immediately get oxidized to form carbon dioxide and water vapor.

Explanation of Solution

Water molecules in the liquid state are connected via hydrogen bonds. On heating, the hydrogen bonds are broken, which frees the water molecules. The free water molecules can get vaporized during boiling. On the other hand, gasoline is a mixture of hydrocarbons...

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Chapter 12 Solutions

Chemistry In Focus
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Ch. 12 - A representation of liquid water is shown below....Ch. 12 - A mixture initially contains equal masses of...Ch. 12 - An older home has lead pipes. Should you boil the...Ch. 12 - Why are liquid drops spherical in shape?Ch. 12 - Would there be solids and liquids if cohesive...Ch. 12 - From a molecular viewpoint, explain the...Ch. 12 - Explain evaporation from a molecular point of...Ch. 12 - Define each of the following: a. boiling point b....Ch. 12 - Describe the relationship between intermolecular...Ch. 12 - Define each of the following intermolecular forces...Ch. 12 - Why do oil and water not mix?Ch. 12 - Explain how soap works.Ch. 12 - Define volatile and nonvolatile. How are these...Ch. 12 - Why does sweating cool the human body?Ch. 12 - Define each of the following: a. solution b....Ch. 12 - What are the unique properties of water? Why are...Ch. 12 - Where did Earths water come from?Ch. 12 - Explain the hydrologic cycle.Ch. 12 - What are the impurities present in hard water?...Ch. 12 - What are the common classifications of water based...Ch. 12 - How does a water softener work?Ch. 12 - List the four types of contaminants commonly found...Ch. 12 - Which water contaminants pose immediate health...Ch. 12 - What steps should be taken to minimize intake from...Ch. 12 - What is the SDWA?Ch. 12 - Explain how drinking water is treated before being...Ch. 12 - Is home water treatment necessary for health...Ch. 12 - Explain how each of the following home...Ch. 12 - Explain the concerns that groups like the EWG or...Ch. 12 - Butane is a gas at room temperature, and hexane is...Ch. 12 - One of the following molecules is a solid at room...Ch. 12 - Which compound would you expect to have the...Ch. 12 - Which compound would you expect to have the...Ch. 12 - All the following are liquids at room temperature....Ch. 12 - Which liquid would you expect to be least...Ch. 12 - Classify each molecule as polar or nonpolar:...Ch. 12 - Classify each molecule as polar or nonpolar:...Ch. 12 - What are the criteria used by the perfume industry...Ch. 12 - Two nonpolar substances with similar structures...Ch. 12 - What is the molarity of a solution that contains...Ch. 12 - What is the molarity of a solution that contains...Ch. 12 - How many grams of sucrose (C12H22O11) are present...Ch. 12 - How many grams of glucose (C6H12O6) are present in...Ch. 12 - How many grams of NaCl are present in 225mLofa2.3%...Ch. 12 - How many grams of NaF are present in 4.5 L of a...Ch. 12 - A 250-g sample of hard water contains...Ch. 12 - A 15-g sample of water contains 1.110-3gofCaCO3....Ch. 12 - Tap water is often fluoridated with a sodium...Ch. 12 - A softened water sample contains 245 ppm Na. If a...Ch. 12 - A 475-mL sample of water is extracted from a well...Ch. 12 - A 255-mL sample of water is taken from a tap and...Ch. 12 - A water sample is found to be high in lead...Ch. 12 - Your water provider posts an alert in the local...Ch. 12 - The quote by Roger Joseph Boscovich at the...Ch. 12 - Explain the difference between a polar molecule...Ch. 12 - The EPA has become concerned over the use of lead...Ch. 12 - When water is boiled, it is converted into a gas....Ch. 12 - Suppose a perfume contained the following two...Ch. 12 - Explain what you think might be occurring in dry...Ch. 12 - Over half of our nations drinking water contains...Ch. 12 - The following drawing shows a molecular view of a...

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