For corrosion to take place within the...

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Question 1 of 2066636eef28f7522a1c51f8bc

For corrosion to take place within the closed, recirculating cooling water system of a marine diesel engine, an electro-chemical cell must exist where the cooling water is electrically conductive. Which of the following factors has the greatest influence on electrical conductivity?

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Question 1 of 20

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🔍 Key Concepts

• Electrical conductivity in water and what actually carries the current • Difference between ions (charged particles) and neutral molecules like dissolved gases • How closed cooling systems are protected from corrosion (e.g., treatment, inhibitors, low conductivity)

💭 Think About

• Ask yourself: In water, what physically moves the electric charge? Are they ions, neutral molecules, or something else? • Which of the listed factors most directly affects the number and mobility of ions in the cooling water? • In a closed cooling system, which property do we usually try to control to keep conductivity low and limit corrosion?

✅ Before You Answer

• Identify which choice most clearly relates to the presence of ions in solution rather than just changing chemical reactivity or corrosion rate indirectly. • Consider which factor, when increased, would almost always raise a conductivity meter reading on treated water. • Separate what affects corrosion chemistry in general from what most directly affects electrical conductivity itself.

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