Laboratory Manual Chemistry in Context
Laboratory Manual Chemistry in Context
8th Edition
ISBN: 9780073518121
Author: American Chemical Society
Publisher: McGraw-Hill Education
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Chapter 8, Problem 42Q

(a)

Interpretation Introduction

Interpretation:

What happens when water boils has to be found. Wheather the boiling breaks the covalent bonds within molecules or the hydrogen bonds between the molecules get disrupted has to be found.

Concept Introduction:

Covalent bonds are formed by sharing of electrons between atoms.

Ionic bonds are formed by the complete transfer of one or more electrons to the other atom, thereby the bonded atoms acquire opposite charges to each other.

The ionic bond is formed due to the electrostatically attraction between the opposite charged atoms.

Intermolecular force: the attractive force that withholds two molecules is called as intermolecular force. The influence of intermolecular forces depends on molar mass and the functional group present in the molecule.

Decreasing order of Strength of intermolecular forces:

ionic >hydrogen bonding>dipole-dipole interaction>Vander Waals dispersion force.

(b)

Interpretation Introduction

Interpretation:

What happens when water undergoes electrolysis has to be found. Wheather this breaks the covalent bonds within molecules or the hydrogen bonds between the molecules get disrupted has to be found.

Concept introduction:

In any electrochemical reaction, an electron goes from one substance to another substance driven by the oxidation-reduction reaction. Electrochemical cells have two conducting electrodes, called the anode and cathode. The anode is defined as the electrode where oxidation occurs. The cathode is the electrode where reduction takes place. Standard electrode potential (E°cell) can be calculated for both oxidation and reduction reactions. A positive value of (E°cell) indicates that the reaction proceeds spontaneously in the forward direction whereas, a negative value of (E°cell) indicates that the reaction proceeds spontaneously in backward direction. The standard cell potential expression is written as follows,

E°cell=E°cathode+E°anode

Intermolecular force: the attractive force that withholds two molecules is called as intermolecular force. The influence of intermolecular forces depends on molar mass and the functional group present in the molecule.

Decreasing order of Strength of intermolecular forces:

ionic >hydrogen bonding>dipole-dipole interaction>Vander Waals dispersion force.

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Chapter 8 Solutions

Laboratory Manual Chemistry in Context

Ch. 8.7 - Prob. 8.21CTCh. 8.8 - Prob. 8.23CTCh. 8 - Prob. 1QCh. 8 - Prob. 2QCh. 8 - Which chemical species gets oxidized and which...Ch. 8 - What is the difference between a galvanic cell and...Ch. 8 - Two common units associated with electricity are...Ch. 8 - Consider the galvanic cell pictured. A coating of...Ch. 8 - Prob. 7QCh. 8 - a. How does the voltage from a tiny AAA alkaline...Ch. 8 - Prob. 9QCh. 8 - The mercury battery has been used extensively in...Ch. 8 - Prob. 12QCh. 8 - During the conversion of O2(g) to H2O(l) in a fuel...Ch. 8 - How does the reaction between hydrogen and oxygen...Ch. 8 - This diagram represents the hydrogen fuel cell...Ch. 8 - What is a PEM fuel cell? How does it differ from...Ch. 8 - In addition to hydrogen, methane also has been...Ch. 8 - Prob. 18QCh. 8 - Potassium and lithium both are reactive Group 1...Ch. 8 - What challenges keep hydrogen fuel cells from...Ch. 8 - Every year, 5.6 1021 kJ of energy comes to Earth...Ch. 8 - Prob. 22QCh. 8 - Prob. 23QCh. 8 - Prob. 24QCh. 8 - Prob. 25QCh. 8 - Consider these three sources of light: a candle, a...Ch. 8 - Prob. 27QCh. 8 - What is the difference between an electrolytic...Ch. 8 - Provide some differences between a leadacid...Ch. 8 - Prob. 30QCh. 8 - The company ZPower is promoting its silverzinc...Ch. 8 - Prob. 32QCh. 8 - Prob. 33QCh. 8 - You never need to plug in Toyotas gasolinebattery...Ch. 8 - Prob. 35QCh. 8 - What is the tragedy of the commons? How does this...Ch. 8 - Hydrogen is considered an environmentally friendly...Ch. 8 - Fuel cells were invented in 1839 but never...Ch. 8 - Hydrogen and methane both can react with oxygen in...Ch. 8 - Engineers have developed a prototype fuel cell...Ch. 8 - How can the principles of green chemistry be...Ch. 8 - Prob. 42QCh. 8 - Prob. 43QCh. 8 - Small quantities of hydrogen gas can be prepared...Ch. 8 - Prob. 45QCh. 8 - Prob. 46QCh. 8 - Prob. 47QCh. 8 - Prob. 48QCh. 8 - Although Alessandro Volta is credited with the...Ch. 8 - Prob. 50QCh. 8 - If all of todays technology presently based on...Ch. 8 - Prob. 52QCh. 8 - Prob. 53QCh. 8 - Prob. 54QCh. 8 - Prob. 55Q
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