So im determining the amount of Na2CO3 in a sample of soda ash by titrating it with HCl. I need help coming up with the equations. This is what I know:
The reaction occurs in 2 stages the first titration with one indicator and the second titration with another indicator. Theres supposedly 6 equations including the complete and net ionic equations...I know that the final equation would be this:
Na2CO3 + HCl = H20 + NaCl + CO2
because the H2CO3 is not stable or w/e so it changes to CO2. I need help coming up with the other different equations for each stage I started with stage 1 and tried this:
Na2CO3 + HCl = NaCl + NaHCO3
but i dont know if thats correct and i dont know where to progress from there to stage 2. Please help! Thanx!
2006-09-20 10:13:37 · 1 answers · asked by swejedi7 1 in Science & Mathematics ➔ Chemistry
I'm not sure what "stages" your instructor is looking for, but consider this:
Na2CO3 dissociates into 2 Na+ and CO3 - -
HCl dissociates into H+ and Cl -
2 H+'s react with CO3 - - to make H2O and CO2 (gas)
I would consider that to be the end of the process, since the Na+ and Cl - ions will remain in solution.
(offered for what it's worth)
2006-09-20 11:10:38 · answer #1 · answered by actuator 5 · 0⤊ 0⤋