Chapter 2 - Electrochemistry and Basics of Corrosion TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. Interruption of operations and loss of life can be the penalties of corrosion failures. Electrochemistry is the science that explains the mechanism of corrosion attack in aqueous solutions. The anode and cathode of a corrosion cell must consist of two different metals 'T' 'T' 'F'

Chapter 2 - Electrochemistry and Basics of Corrosion TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. The anodic and cathodic reactions of a corrosion cell must occur simultaneously and at equivalent rates. Slowing down of cathodic reactions is called "cathodic polarization". Steam boilers are operated with deaerated feed water as a means of preventing corrosion. 'T' 'T' 'T'

Chapter 2 - Electrochemistry and Basics of Corrosion TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. There is a single value of the electrode potential of a metal independent of the solution in which the potential is measured Pipe-to-soil potential" is really the potential measurement between the pipe in the soil and the half cell used to make the measurement. Galvanic action tends to speed up because of the products of anodic and cathodic reactions 'F' 'T' 'F'

Chapter 2 - Electrochemistry and Basics of Corrosion TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. The tendency for a metal to go into solution is greater in a dilute solution than in a concentrated solution of its ions. In an oxygen concentration cell, the metal surface in contact with a solution containing higher concentrations of dissolved oxygen will become cathodic. In a galvanic couple between copper and 304 stainless steel in salt water the copper will tend to corrode and the stainless steel to be protected. 'T' 'T' 'F'

Chapter 2 - Electrochemistry and Basics of Corrosion TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. Insoluble films of lead sulfate provide protection for lead in sulfuric acid. Application of anodic protection does not require as much control as does cathodic protection During the reaction of metals in acids, oxygen is evolved as a gas 'T' 'F' 'F'

Chapter 2 - Electrochemistry and Basics of Corrosion TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. An electrochemical reaction is a chemical reaction involving the transfer of electrons. Adding oxygen to acid solutions will render them less corrosive. Activation polarization is usually the controlling factor during corrosion of metals in weak acids 'T' 'T' 'T'

Chapter 2 - Electrochemistry and Basics of Corrosion TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. The magnitude and sign of the EMF should be noted when measuring and reporting corrosion potentials. In any electrochemical reaction, the more negative half cell tends to be reduced and the more positive half cell tends to be oxidized The galvanic series is a tabulation of half cells according to corrosion potentials. 'T' 'F' 'T'

Chapter 2 - Electrochemistry and Basics of Corrosion TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. The typical flashlight battery depends on galvanic corrosion to generate electrical power. For practical corrosion resistance, the most favorable area ratio is a very large cathode connected to a very small anode When steel and aluminum pipes carrying water are joined together, it is important to install an electrical contact between them 'T' 'F' 'F'

Chapter 2 - Electrochemistry and Basics of Corrosion TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. The oxidation-reduction potentials can be used to predict whether galvanic corrosion will occur. Corrosion rate measurements can be made by electrochemical techniques. Electrochemical corrosion rate measurements require a long period 'T' 'T' 'F'

Chapter 2 - Electrochemistry and Basics of Corrosion TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. Fixation devices on human bones can be readily tested by electrochemical methods. Knowledge of electrochemistry can be very useful in reducing corrosion. 'T' 'T'

Corrosion occurs at an anodic surface where the Chapter 2 - Electrochemistry and Basics of Corrosion MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Corrosion occurs at an anodic surface where the A. Metal ion concentration is higher than in the bulk solution. B. Oxygen content is lower than in the bulk solution. C. Metal ion concentration is lower than in the bulk solution. D. Oxygen content is high.

Corrosion accelerated by an oxygen concentration cell will occur Chapter 2 - Electrochemistry and Basics of Corrosion MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Corrosion accelerated by an oxygen concentration cell will occur A. Outside a crevice. B. Within a crevice. C. Both inside and outside of a crevice.

Select the most general reason metals corrode. Chapter 2 - Electrochemistry and Basics of Corrosion MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Select the most general reason metals corrode. A. They are soluble in acids or alkalis B. They are influenced by stray electrical currents C. Their metallic form has a higher level of energy than their ores D. Their corrosion products can disperse as fast as they form