Does Kv2SOv4, Kv2COv3 or KCv2Hv3Ov2 create the greatest increase in pH when mixed with water?
Your v, while interesting as a way of showing subscripts, actually is somewhat distracting. I suggest you use what everyone else does. We just type it as regular type and everyone understands what it means.
K2SO4 is neutral, KC2H3O2 is about pH 8 or so and K2CO3 is about 10 or so assuming the same molarity of the salt.
Increase? Ok, that means make it more alkaline. So you are looking at anions that are basic, which means they form weak acids.
SO4 forms a strong acid.
CO3 forms a weak acid
acetate forms an weak acid
so which is the weaker acid.
Ka acetic acid appx 10^-5
ka carbonic acid appx 10^-7
so,carbonic acid is the weaker.
answer : K2CO3
See part IV, B of this.
http://www.mrcoulter.com/LECTURES/18_acidequilb3.pdf
To determine which compound creates the greatest increase in pH when mixed with water, we need to compare their common ion effects on pH.
1. Kv2SOv4: This compound dissociates into K+ ions and SO4^2- ions. Neither of these ions have a direct effect on pH.
2. Kv2COv3: This compound dissociates into K+ ions and CO3^2- ions. The CO3^2- ions can react with water to form bicarbonate (HCO3-) ions, which results in a basic solution that increases pH.
3. KCv2Hv3Ov2: This compound dissociates into K+ ions and CH3COO- ions (acetate ions). Acetate ions can react with water, resulting in the formation of acetic acid (CH3COOH) and hydroxide ions (OH-), which increases pH and makes the solution basic.
Comparing the compounds, both Kv2COv3 and KCv2Hv3Ov2 have the potential to increase pH. However, the extent of pH change depends on the concentration and solubility of these compounds. Additionally, the relative acidity or basicity of the cations (K+) can also affect the pH change.
To conclusively determine which compound creates the greatest increase in pH, you would need to compare the dissociation constants (Ka) and solubilities of Kv2COv3 and KCv2Hv3Ov2. The compound with a higher Ka and better solubility will likely create a larger increase in pH when mixed with water.