# What pressure will be exerted by 25.0 g of CO_2 at temperature of 25 C and a volume of 500. mL?

Nov 28, 2016

Pressure will be reasonably high.

#### Explanation:

We have approximately $0.5 \cdot m o l$ of gas confined in a $\frac{1}{2} \cdot L$ volume. Pressure will be reasonably high, however, we can use the Ideal Gas Equation as a first approximation.

$\text{Pressure} = \frac{\frac{25.0 \cdot \cancel{g}}{44.0 \cdot \cancel{g} \cdot \cancel{m o {l}^{-} 1}} \times 0.0821 \cdot \cancel{L} \cdot a t m \cdot \cancel{{K}^{-} 1} \cdot \cancel{m o {l}^{-} 1} \times 298 \cdot \cancel{K}}{0.500 \cdot \cancel{L}}$

$= 27.8 \cdot a t m$

The actual pressure is likely to deviate considerably from this value. The ideal gas equation is used as a first approximation.