JEE Main 2014 · 19 Apr · Shift 1 · Chemistry Q32

← JEE Main 2014 · 19 Apr · Shift 1

ChemistrySingle correct+4 / -1Question 32 of 90

Choose the correct statement with respect to the vapour pressure of a liquid among the following :

Increases linearly with increasing temperature

Increases non-linearly with increasing temperature

Decreases linearly with increasing temperature

Decreases non-linearly with increasing temperature

Answer and worked solution

Official answer: B

By the Clausius-Clapeyron equation, $\ln p=-\dfrac{\Delta H_{vap}}{RT}+C$ . Vapour pressure rises roughly exponentially with temperature: increases non-linearly.

Topics:Raoult's law and vapour pressure

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JEE Main 2014 · 19 Apr · Shift 1, Chemistry question 32