determine the volume of stock acid required to prepare 500ml of 0.5mol/l hydrochloric acid. Assume the stock acid is 38% by mass hydrogen chloride and has a density of 1190kg/ m3 (1.190g/ml).
2007-12-20 14:11:55 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
its mass conc. not mol conc.
2007-12-20 14:16:49 · update #1
oOOOooh, solution and molarity, i HATE this problems. lol, well, you have to convert ml to mol using molarity, then mol to grams, use the density of HCl as a conversion factor and multiply by .38(38%) to determine the volume...i think that's right.
2007-12-20 14:16:51 · answer #1 · answered by laangel464 3 · 0⤊ 0⤋
the stock acid is 12 M.
Use the usual formula of M1V1=M2V2.
M2 = 12
You have all of the pieces except for V2. Just plug in and solve.
2007-12-20 22:15:14 · answer #2 · answered by reb1240 7 · 0⤊ 0⤋
Isn't it the formula to "Preparation H" ???!!!!
2007-12-20 22:14:39 · answer #3 · answered by YIA123 2 · 0⤊ 0⤋
google it, most chem labs i had to do were on google, or they at least told u how to do it
2007-12-20 22:14:41 · answer #4 · answered by touretts45678 2 · 0⤊ 1⤋