We need 1400ml of H2SO4 to neutralize 550ml of NaOH (concentration 0.05moles/L). What is the pH of the final solution if we use 1,5L of acid?
2006-12-17 10:35:01 · 5 answers · asked by Joanne S 1 in Science & Mathematics ➔ Chemistry
with a pH meter
2006-12-17 10:42:09 · answer #1 · answered by The Seeker 3 · 0⤊ 0⤋
Your question is hard to answer, because you use H2SO4. H2SO4 is a strong acid as to the first ionization, H2SO4 ===> H+ + HSO4-. But it is a weak acid as to HSO4- ===> H+ + SO4=. If you "neutralize" 550mL NaOH solution with 1400mL H2SO4, you will get Na2SO4 solution, and the pH will be 8, not 7. But maybe your teacher thinks that the pH will be 7, because it's "neutral." Or maybe your teacher wants you to neutralize the solution to a mix of NaHSO4 and Na2SO4 to get pH = 7. Your teacher should use HCl and NaOH next time.
2006-12-17 10:49:59 · answer #2 · answered by steve_geo1 7 · 0⤊ 0⤋
Dip your hand in there. Depending on how the solution wrecks your hand, you should be able to figure out the pH.
2006-12-17 10:42:37 · answer #3 · answered by Walter 5 · 0⤊ 0⤋
use a PH metre
2006-12-17 10:46:01 · answer #4 · answered by J D 3 · 0⤊ 0⤋
ask your teacher?
2006-12-17 10:40:55 · answer #5 · answered by Will-i-am 3 · 0⤊ 0⤋