Sodium sulfite is added to boiler water to...

Sodium sulfite is added to boiler water to...

Question 1 of 270705eccefa0bacbc34ba4d46f86

Sodium sulfite is added to boiler water to chemically react with any __________.

Question 1 of 27070

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Q

Sodium sulfite is added to boiler water to chemically react with any __________.

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🔍 Key Concepts

• Boiler water treatment purpose in marine steam systems • Effects of dissolved gases (like oxygen and carbon dioxide) on boiler metal surfaces • Which chemicals are used specifically as oxygen scavengers

💭 Think About

• Ask yourself: which dissolved substance is most directly responsible for internal corrosion and pitting of boiler steel, and needs a chemical "scavenger"? • Think about typical boiler water treatment chemicals: which one is used for oxygen removal, and which are used for pH control or scale prevention? • Match sodium sulfite’s role: is it mainly targeting corrosion from oxygen, acidity from CO₂, or something else?

✅ Before You Answer

• Identify which choice names a dissolved gas commonly present in untreated feedwater that causes corrosion. • Recall that sodium sulfite is commonly listed in engineering texts as an oxygen scavenger – confirm what that means. • Eliminate any options that are not naturally present in raw feedwater in significant amounts.