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?

1 Answer
Apr 29, 2017

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


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

#SOCl_2(l) + 2H_2O(l) rarr SO_2(g)uarr + 2HCl(aq)+Delta#

#"Moles of thionyl chloride"=(35.0*g)/(118.97*g*mol^-1)=0.294*mol.#

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