# How many grams of salt are required to produce a 355*mg mass of chlorine gas?

Feb 15, 2017

Of chlorine gas, $C {l}_{2}$..........?

#### Explanation:

$N a C l \left(s\right) \rightarrow N a \left(s\right) + \frac{1}{2} C {l}_{2} \left(g\right)$.

We require $\frac{0.355 \cdot g}{70.90 \cdot g \cdot m o {l}^{-} 1} = 0.00500 \cdot m o l$.

Given the stoichiometry, we require at least $0.0100 \cdot m o l$ salt, i.e. $0.0100 \cdot m o l \times 58.44 \cdot g \cdot m o {l}^{-} 1 = 0.585 \cdot g$.

This would not be a terribly efficient way to produce chlorine gas.