While circulating heated sulfuric acid...

Question 1 / 205eccef9cbacbc34ba4d4586f

Question 1 of 205eccef9cbacbc34ba4d4586f

While circulating heated sulfuric acid through a feed water heater of a flash evaporator for the purposes of scale removal, what would be the indication of the continued presence of scale?

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Question 1 of 20

5eccef9cbacbc34ba4d4586f

While circulating heated sulfuric acid through a feed water heater of a flash evaporator for the purposes of scale removal, what would be the indication of the continued presence of scale?

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🔍 Key Concepts

• Chemical descaling reaction between sulfuric acid and calcium carbonate scale (producing carbon dioxide gas) • Relationship between acid strength (pH) and its ability to keep reacting with existing scale • What a change in color and pH typically means about how much active acid is left

💭 Think About

• When sulfuric acid reacts with calcium carbonate scale, what visible and measurable by‑products are produced while the reaction is actively occurring? • If the acid becomes weaker (higher pH, color change), what does that tell you about how much acid has been consumed and whether there is still unreacted scale present? • If carbon dioxide venting stops while acid is still strong, what does that suggest about the reaction and the amount of scale left?

✅ Before You Answer

• Identify which answer choice shows ongoing gas (CO₂) evolution, which indicates an active reaction with scale • Identify which answer choice shows acid still strong (low pH, red color), versus partially neutralized (higher pH, orange color) • Match the condition that means: "there is still enough unreacted scale for the acid to keep reacting and releasing CO₂"

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Question 1 of 20

While circulating heated sulfuric acid through a feed water heater of a flash evaporator for the purposes of scale removal, what would be the indication of the continued presence of scale?

Change in color (turning to orange with a pH of 4.0) and no more venting of carbon dioxide gas.

No change in color (remaining at red with a pH of 2.0) and continued venting of carbon dioxide gas.

No change in color (remaining at red with a pH of 2.0) and no more venting of carbon dioxide gas.

Change in color (turning to orange with a pH of 4.0) and continued venting of carbon dioxide gas.

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Question 1 / 205eccef9cbacbc34ba4d4586f

Question 1 of 205eccef9cbacbc34ba4d4586f

While circulating heated sulfuric acid through a feed water heater of a flash evaporator for the purposes of scale removal, what would be the indication of the continued presence of scale?

Back

Question 1 of 20

5eccef9cbacbc34ba4d4586f

While circulating heated sulfuric acid through a feed water heater of a flash evaporator for the purposes of scale removal, what would be the indication of the continued presence of scale?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed