Topic Details (Notes format)

Critical Point

Subject: Chemistry

Book: General Chemistry

At the critical point, the liquid and gas phases of a substance become indistinguishable, forming a supercritical fluid. Above this temperature and pressure, distinct liquid and gas phases do not exist. Supercritical fluids (e.g., supercritical CO2) exhibit unique solvating properties and are used in decaffeination, extraction, and green chemistry processes due to low toxicity and reduced waste.

Practice Questions

Which compound is commonly known as ammonium nitrate?

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Which gas is most abundant in Earth's atmosphere?

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What is the chemical formula of carbon dioxide?

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What is the chemical formula for phosphoric acid?

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What is the chemical formula for boric acid?

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Which element is represented by the symbol 'Ne'?

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Which element is known as quicksilver?

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Which non-metal element is liquid at room temperature?

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Which gas is used in neon signs?

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Which element has the atomic number 92?

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