JEE Main · 2023 · 08 Apr 2023 · Shift 1 · Solutions

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The vapour pressure vs. temperature curve for a solution solvent system is shown below.

The boiling point of the solvent is ______ °C

Answer: 82

Solution

The boiling point of a liquid is the temperature at which its vapour pressure equals atmospheric pressure (typically 1 atm or 760 mmHg). From the vapour pressure vs. temperature curve, the solvent curve intersects the atmospheric pressure line at 82°C. Therefore, the boiling point of the solvent is 82°C. (Note: The solution has a higher boiling point of 83°C due to elevation of boiling point.)

JEE Main · 2023 · 08 Apr 2023 · Shift 1 · Integer answer

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