Why is the ion product of water only related to temperature
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In high school, my teacher said that the ion product of water depends only on temperature and not on the concentration of acids or bases. I never understood this. Later, when I studied inorganic chemistry and saw the proofs related to it, I still didn’t get it. Was it determined through experiments that this ion product is independent of temperature, or can it be theoretically proven that it is independent of temperature? I’m seeking guidance from experts...
All the nouns you mentioned are too unfamiliar to me. What is ion product? It’s too theoretical; I’m not sure if other teachers are aware of this @qugd @yjqin1 @ctstsyj @zjp
The ion product constant of water, abbreviated as the water ion product, is a constant that represents the ratio between hydroxide ions and H2O in a solution. c(H+)·c(OH-)=K(W), where K(W) is known as the ion product constant of water, and c(H+) and c(OH-) refer to the total molar concentrations of hydrogen ions and hydroxide ions in the solution, respectively. K(W) varies only with temperature and is a temperature constant. Since the ionization of water is endothermic, raising the temperature shifts the equilibrium to the right; therefore, K(W) increases only as the temperature rises.
I remember there being such a constant; it’s used in high school chemistry to calculate the acidity or basicity of salts formed from strong acids and weak bases, or from strong bases and weak acids.