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Alkaline
The hydrogen ion concentration having a PH of 11 is acidic.
Adding water dilutes the solution and therefore reduces the concentration of hydrogen ions.
A neutral solution has an equal number or concentration of hydrogen and hydroxide ions. A neutral solution is one that has a pH of 7.0. Pure water is a neutral solution.
A hydrogen ion is just a proton, H+. The pH of a solution depends on proton concentration, pH = -log of H+ concentration. Therefore, the greater the number of protons present in solution, the lower the pH number, and the more acidic the solution.
Alkaline
The concentration of hydrogen in a solution increases as the pH of the solution becomes more acidic.
The acidic character increases with decrease in pH because the pH and acidity are both dependent on the hydrogen ion concentration, with pH being the negative log of the hydrogen concentration. So, at the concentration of H+ increases, the negative log of the H+ concentration decreases.
In neutral water 10-7 mol/l or 10-7 mol/dm3 if you prefer those units of measure. the solution may not be neutral (i.e be acidic or basic) in which case the concentration woul be higher or lower.
The hydrogen ion concentration having a PH of 11 is acidic.
Adding water dilutes the solution and therefore reduces the concentration of hydrogen ions.
Acidic
A neutral solution has an equal number or concentration of hydrogen and hydroxide ions. A neutral solution is one that has a pH of 7.0. Pure water is a neutral solution.
A hydrogen ion is just a proton, H+. The pH of a solution depends on proton concentration, pH = -log of H+ concentration. Therefore, the greater the number of protons present in solution, the lower the pH number, and the more acidic the solution.
A high concentration of hydrogen ion indicates that the solution is acidic, while a high concentration of hydroxide ion makes the solution basic. When the concentration of hydroxide ion is equal to hydrogen ion the solution is basic.
An acid.An acidic compound.
acids are substances that release their hydrogen ion(s) while bases grab hydrogen ions to themselves. SO, adding acids will increase the H+ concentration while adding bases will decrease the H+ concetration of the solution. This would be considered a direct effect.