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Elevation in Boiling Point

Two flasks of...

Question

Two flasks of equal volumes have been joined by a narrow tube of negligible volume. Initially, both the flasks are $300 K$ containing $0.6$ $m o l e$ of gas is present. One of the flasks is then placed in a thermostat at $600 K$ . How many moles of gas are present in hot bulb?

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Solution

$n_{1} + n_{2} = 0.6$ _____ $(1)$

$\frac{n_{1}}{n_{2}} = \frac{T_{2}}{T_{1}} (P V = x R T)$

$\frac{n_{1}}{n_{2}} = \frac{T_{2}}{T_{1}} = \frac{600}{300} = 2$

$n_{1} = 2 n_{2}$

$2 n_{2} = n_{1} = 0.6$

$n_{2} = 0.2$

$n_{1} = 0.4$

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