Suppose we dilute solution 10 times with water. Can this go in for ever? But that doesn't happen? What prevents it? Is there anyone already found answer for this problem or it is just an unsolved basic problem of chemistry? Water undergoes autoionization , i.
I've uploaded a figure, just for illustration red line: calculated pH without considering autoionization, blue is the actual one. You can see the difference. It can not be alkaline because the water is not really alkaline, more like neutral. But dilution in an alkaline solvent will easily make the solution alkaline. EDIT: seems my answer was not considered an answer. Well since the question is composed out of more than 1 question Using water, you won't be able to get past aprox 7 PH. Using an alkaline non reactive solvent will allow you to go as far as the PH of the solvent.
Additional clarification: If no reaction happens, the PH limit of the solution is bound between the substance with the highest PH, and the one with the lowest. Sign up to join this community. The pH values of acidic solutions increase with dilution, while the pH values of basic solutions decrease with dilution. Since a pH value is an expression of the concentration of these ions, changing these concentrations by introducing more solvent causes the pH value to change.
The pH scale covers a range between 0 and 14 pH. A pH of exactly 7 is neutral. Similarly, when an alkali is diluted with water the concentration of OH - ions decreases. This causes the pH of the alkali to fall towards 7, making the solution less alkaline as more water is added.
Water and neutral solutions Water molecules can break down into hydrogen ions and hydroxide ions. Diluting acids and bases Adding water to an acid or base will change its pH. National 5 Subjects National 5 Subjects up.
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