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  • 6.0 L sample at 25°C and 2.00 atm of pressure contains 0.5 mole of a gas. If an additional 0.25 mole of gas at the same pressure and temperature are added, what is the final total volume (in L)

6.0 L sample at 25°C and 2.00 atm of pressure contains 0.5 mole of a gas. If an additional 0.25 mole of gas at the same pressure and temperature are added, what is the final total volume (in L) of the gas?

Option: 1

9


Option: 2

8


Option: 3

7


Option: 4

10


Answers (1)

best_answer

We have
Initial volume(V_i ) = 6 L
Initial moles( n_i ) = 0.5 moles
Final moles( n_f ) = 0.5 + 0.25 = 0.75 moles

Now, according to Avogadro’s law, we have:

\\\mathrm{\frac{V_{i}}{n_{i}}\: =\: \frac{V_{f}}{n_{f}}}\\\\\mathrm{\frac{6}{0.5}\: =\: \frac{V_{f}}{0.75}}

Thus V_f=9L

 

Posted by

Ritika Harsh

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