Hi, I tried this one but got a weird answer, anyway......
pH = -Log[H+] (H+ ion conc. in mol/L)
and there's one H+ per molecule of methadone HCl. At 2% w/v there is 2g in 100ml and therefore 20g in 1L.
how many moles of MethadoneHCL in 20g?
Calc using MW which is 346.5. You have ( 20/346.5 moles of the drug and hence 20/346.5 moles of H+ ions) a 1:1 ratio.
That works out as 0.0577 moles of H+ and using formula a pH of about 1.24.
Dilute hydrochloric acid? Carbon dioxide gas escapes and leaves sodium chloride solution, possibly leaving either an excess of acid, or an excess of sodium carbonate.
Ciprofloxacin hydrochloride, cornstarch, microcrystalline cellulose, silicon dioxide, crospovidone, magnesium strearate, hypromellose, titanium dioxide and polyethylene glycol.
The carbon dioxide is a solute in a solution of carbon dioxide in water in a soft drink.
Carbon dioxide is an inorganic gas; but carbon dioxide can exist as a water solution.
A solution that is composed completely of gas is carbon dioxide. Hydrogen dioxide is also a solution composed completely of gas.
solution
carbon dioxide
Bromthymol Blue, when heated in a solution, indicates carbon dioxide. If there is carbon dioxide in the solution, it will turn bright yellow (when heated).
The solution of carbon dioxide in water is colorless.
Yes, carbonated water is a solution of carbon dioxide.
No a solution
Manganese dioxide is insoluble in water.