A 82.7 g sample of dinitrogen monoxide is confined in a 2.0 L vessel, what is the pressure (in atm) at 115°C?

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A 82.7 g sample of dinitrogen monoxide is confined in a 2.0 L vessel, what is the pressure (in atm) at 115°C?

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Answer 1 · 2015-11-02T18:15:08

$P = \frac{n R T}{V}$ $P = (nRT)/V$ ; we assume (reasonably?) ideal gas behaviour for $N_{2} O$ $N_2O$ .

Explanation:

The only challenge to this problem is selecting the appropriate gas constant; here, we choose $R = 0.0821 \cdot L \cdot a t m \cdot K^{- 1} \cdot m o l^{- 1}$ $R = 0.0821*L*atm*K^(-1)*mol^(-1)$ . This gas constant (and others) would be supplied. Of course, we've got to choose the right one for the job!

So, $P = \frac{\frac{82.7 \cdot g}{44.01 \cdot g \cdot m o l^{- 1}} \times 0.0821 \cdot L \cdot a t m \cdot K^{- 1} \cdot m o l^{- 1} \times 388 K}{2.0 \cdot L} = ? ? a t m$ $P = ((82.7*g)/(44.01*g*mol^-1)xx0.0821*L*atm*K^(-1)*mol^-1xx388K)/(2.0*L) = ?? atm$

You will note that we have converted the temperature to absolute.

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A 82.7 g sample of dinitrogen monoxide is confined in a 2.0 L vessel, what is the pressure (in atm) at 115°C?

1 Answer

Explanation:

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