Phenolphthalein is used as an indicator to...

Question 1 / 205eccefa0bacbc34ba4d46f78

Question 1 of 205eccefa0bacbc34ba4d46f78

Phenolphthalein is used as an indicator to test boiler water for __________.

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Question 1 of 20

5eccefa0bacbc34ba4d46f78

Phenolphthalein is used as an indicator to test boiler water for __________.

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🔍 Key Concepts

• Boiler water chemistry and why certain properties must be controlled to prevent scale and corrosion • The typical use of phenolphthalein in chemistry (what pH range it changes color in) • Which boiler water test specifically relies on an indicator that responds to pH (acidity/alkalinity) rather than to specific ions like chloride or hardness minerals

💭 Think About

• Think about what phenolphthalein actually does in a chemistry lab. When do you usually see it used, and what kind of titration is it involved in? • Which of the listed properties (chloride content, hydrazine, hardness, alkalinity) would most logically be checked using a color-change that occurs at a certain pH? • Eliminate any answer choices that are normally measured with special reagents, test kits, or instruments designed for that specific substance rather than a simple acid-base indicator.

✅ Before You Answer

• Recall that phenolphthalein changes color in a specific pH range (around slightly basic conditions). Match that to the option most directly related to pH. • Verify which properties like chlorides and hardness are usually measured by comparing drops of reagents or titrations with different indicators, not necessarily phenolphthalein. • Confirm in your engineering/boiler chemistry notes which boiler water test is commonly called the "P" test and what it measures.

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Question 1 of 20

Phenolphthalein is used as an indicator to test boiler water for __________.

chloride content

hydrazine

hardness

alkalinity

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Question 1 / 205eccefa0bacbc34ba4d46f78

Question 1 of 205eccefa0bacbc34ba4d46f78

Phenolphthalein is used as an indicator to test boiler water for __________.

Back

Question 1 of 20

5eccefa0bacbc34ba4d46f78

Phenolphthalein is used as an indicator to test boiler water for __________.

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