pH = -log10[H+] (pH is the minus log of the hydrogen ion concentration) A low pH value means lots of H+ eg in sulphuric acid, pH 2 or 3. A high pH means less H+ eg if the solution is alkaline, pH 13-14. On your calculator, it's easy to get from H+ to pH. To get from pH to H+ you need to either do 10-pH or do shift log (minus number). Practice a few to make sure you can get the sequence right on your calculator : pH 7 (neutral) should come out as 1 x 10-7 hydrogen ions.
You can use pH, OH-, and H+ to calculate each other. If you take the -log10 of [H+], you can get the pH. If you take 10^(-pH), you can get the [H+]. You can get the OH- concentration by dividing the Kw(the self-ionization constant of H2O, 1E-14) by the H+ concentration. By taking the -log10 of [OH-], you can calculate the pOH and to get the pH, you subtract the pOH from 14. (You get 14 by taking the -log10 of the Kw.)
In chemistry, a lower case p means 'the negative log of-'. This means that pH is the negative log of the concentration of H+ in a solution. To put it in terms of math:
pH = -log[H+]
the more hydrated hydrogen ions, the lower the pH value of the solution.
pH = -log10([H3O+]).
The concentration of ions H+ or OH- is important for the value of pH.
pH indicator is a chemical compound that is added in small amounts to a solution so that the pH (acidity or alkalinity) of the solution can be determined easily. pH indicators are usually weak acids or bases themselves. They detect the presence of hydronium ions (H3O+) or hydrogen ions (H+).
pH is a measure of Hydrogen concentration pH = -log10[H+], where [H+] is the concentration of hydrogen ions. From this equation, we can see that an increase of hydrogen ions will lower the pH, and a decrease of hydrogen ions will raise the pH. =D
Litmus paper or you could measure the number of H+ ions
The nature of the solution be it acidic or basic will determine the PH value of the given solution.
pH is the measure of H+ ions. The more the concentration of H+ ions, the less the pH value and the more the concentration of OH- ions and lesser the concentration of H+ ions, the more is the pH value.
pH = -log10([H3O+]).
The concentration of ions H+ or OH- is important for the value of pH.
The pH value is an indication of the acidity/alkalinity of a solution. More precisely, the pH value is a representation of the concentration of hydrogen cations (hydronium ions) in a solution.
Any ion that doesn't undergo hydrolysis in solution, and other than hydrogen and hydroxyl ions, does not change the pH value of the solution. Eg: alkali metal ions
At half equivalence (half neutralisation) pH=pK.
pH=10, means the concentration of OH- ions is 0.0001 M and concentration of H+ ions is 0.0000000001M
pH indicator is a chemical compound that is added in small amounts to a solution so that the pH (acidity or alkalinity) of the solution can be determined easily. pH indicators are usually weak acids or bases themselves. They detect the presence of hydronium ions (H3O+) or hydrogen ions (H+).
The pH of acids ranges between 1 to 6. The one with pH 1 is the most concentrated. The pH is a measure of the concentration of H+ ions in a solution.
No.
pH tells you the amount of hydrogen ions in a solution. Acidic solutions have a pH less than 7 and more H+ ions. Basic solutions have a value over 7, and contain fewer H+ ions.