I have a relatively simple lab to complete in my undergrad chem class. Here's the situation:
I need to measure the molarity of HCl in an unknown sample to 2 significant figures (but I know it's somewhere between 0.2M and 0.3M). However, all the glassware and pH meters are missing, meaning no titration.
I was thinking of a sort of "titration" with a solid, and instead of using a liquid indicator, we add solid Magnesium, which reacts well with HCl. We add small amounts of Mg until it no longer reacts with HCl, and because of the high disassociation of HCl, we can use stoichiometry to calculate the moles of HCl in our sample (the only problem is finding the volume of the sample).
Does this proposal hold water (no pun intended)?
Are there maybe more efficient or accurate ways of measuring HCl concentration?
Thanks in advance,