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# Finding the Pressure from a Reaction Producing a Gas

CHEM-S1TSB7

$5.0\text{ grams}$ of $HCl(aq)$ react with $3.0\text{ grams}$ of $Na(s)$ inside an evacuated $10.0\text{ L}$ chamber by the following reaction:

$$2HCl(aq)+2Na(s)\rightarrow 2NaCl(aq)+{H}_{2}(g)$$

If the temperature inside the chamber is fixed at $323\text{ K}$, what is the resulting pressure inside the chamber after the reaction has proceeded to completion?

$\left(R=0.0821\frac{L\times atm}{mol\times K}\right)$

A

$0.18\text{ atm}$

B

$1.2\text{ atm}$

C

$1.1\text{ atm}$

D

$0.17\text{ atm}$