# 35.0 grams of thionyl chloride is placed in a glass containing 500.0 grams of water. After the reaction is complete how many grams of water will remain unreacted? How many grams of the thionyl chloride will remain unreacted?

Apr 29, 2017

You're a braver person than I am...........

#### Explanation:

Thionyl chloride reacts quantitatively (and violently) with water as represented by the following reaction:

$S O C {l}_{2} \left(l\right) + 2 {H}_{2} O \left(l\right) \rightarrow S {O}_{2} \left(g\right) \uparrow + 2 H C l \left(a q\right) + \Delta$

$\text{Moles of thionyl chloride} = \frac{35.0 \cdot g}{118.97 \cdot g \cdot m o {l}^{-} 1} = 0.294 \cdot m o l .$

And CLEARLY, thionyl chloride is the reagent in deficiency; $500.0 \cdot g$ of water is a HUGE molar quantity.