4469.6 grams of 10% H2SO4 mixed with 1047 grams of 45% KOH and 70 L of water (so total volume is ~75L), calculated should give a pH of around 2.....however in real life I get a pH of around 1.5-1.6....what is going on here????
2007-09-24 03:47:51 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Based on the data given, your calculation is indeed correct. Since I am not involved in your experimental, I may not be able to immediately point out the issue. There are several possibilities: How accurate are your concentrations? What is purity of your chemicals? How accurate is your pH measurement? One note to you---the high-concentration H2SO4 solution may absorb H2O from the air, while the KOH solution may absorb CO2 from the air to form K2CO3. So I wish that your chemicals are PURE enough.
2007-09-30 14:11:01 · answer #1 · answered by Hahaha 7 · 0⤊ 0⤋