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  • For three low density gases A, B, C pressure versus temperature graphs are plotted while keeping them at constant volume, as shown in the figure. <img alt="" src="https://cdn.entrance360.

For three low density gases A, B, C pressure versus temperature graphs are plotted while keeping them at constant volume, as shown in the figure.

The temperature corresponding to the point ' K ' is :

Option: 1

-273^{\circ} \mathrm{C}


Option: 2

-100^{\circ} \mathrm{C}


Option: 3

-40^{\circ} \mathrm{C}


Option: 4

-373^{\circ} \mathrm{C}


Answers (1)

best_answer

From ideal gas equation
$$ \begin{aligned} & \mathrm{PV}=\mathrm{nRT} \\ & \because \text { volume is constant } \\ & \mathrm{P} \propto \mathrm{T} \end{aligned}
It is clear from graph that for all the gases lines of graphs meet at same value.
At \mathrm{x}-axis (temperature axis) \mathrm{P} is zero but temperature is negative and it will be equal to 0 \mathrm{~K}$ or $-273^{\circ} \mathrm{C}

Posted by

Gautam harsolia

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