Which of the following when added to water will cause a significant change in the pH of the solution?
1 NH4HSO4
2 (NH4)2SO4
3 Na2SO4
I believe the answer is 1 & 2. is that right.
I think the secret word here is significant.
Yes, 1 will do it.
Although a solution of 2 will be acidic, I don't think it is nearly as acidic as 1. Whereas 1 might change pure water from pH 7.0 to about 1 or 2, #2 probably won't change much more than 7.0 to 5.0.
3 is not acidic at all.
Yes, you are correct. Both NH4HSO4 (ammonium bisulfate) and (NH4)2SO4 (ammonium sulfate) can cause a significant change in the pH of water when added to it.
Yes, you are correct. Adding both NH4HSO4 (ammonium bisulfate) and (NH4)2SO4 (ammonium sulfate) to water will cause a significant change in the pH of the solution.
To determine this, we need to consider the properties of the compounds. NH4HSO4 and (NH4)2SO4 are both salts that contain ammonium ions (NH4+) which can react with water.
Ammonium ions can undergo hydrolysis in water, meaning they react with water molecules to produce hydronium ions (H3O+), also known as an acidic solution. This results in a decrease in pH.
So, when NH4HSO4 or (NH4)2SO4 is added to water, the ammonium ions in these compounds will hydrolyze, leading to an increase in the concentration of hydronium ions and a decrease in pH. This change in pH indicates a significant change in the acidity of the solution.
On the other hand, Na2SO4 (sodium sulfate) does not contain any ammonium ions, so it will not undergo hydrolysis in water. Therefore, adding Na2SO4 to water will not cause a significant change in the pH of the solution.