# ph to concentration calculator

pH and pOH also have a relationship so that if you do not have enough information to determine one, you can use the concentration of the other. In the section “Concentrations of H+ and OH–“ we discussed that the high concentration of hydroxide ions left little room for hydrogen ions and vice versa. For basic solutions you have the concentration of the base, thus, the concentration of the hydroxide ions OH-. Exponential numbers should be entered using E to represent 10^. - hydrogen ion activity

Water, with a neutral pH of around 7, determines the solubility of many compounds.

Hence the concentration of hydrogen ions in such solutions can be taken to be equal to the concentration of the acid. If you are doing chemistry in a lab, you will need to determine the concentration by finding the moles per unit of volume (m/v or M). The determination of pH and pOH will be calculated by using the concentration of hydrogen ions and hydroxide ions respectively. Bases have less hydrogen ions but more hydroxide ions, represented by the pOH or “potential of hydroxide ions.”. 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Strong acids and bases are compounds that, for practical purposes, completely dissociate into their ions in water. A solution of a strong alkali at concentration 1M (1 mol/L) has a pH of 14. Without the appropriate pH of water, many chemical reactions would not occur. where: The term “pH” is an abbreviation for the “potential of hydrogen.” pH is a unit of measurement which represents the concentration of hydrogen ions in a solution. Join our newsletter to get updated when we release new learning content! The calculated value is a good estimation. In the lab, pH can be determined by a pH indicator such as pH paper. For “weak acids”, most of the acid molecules do not dissociate, so we would have to use more complex methods to calculate pH for solutions of weak acids. This can also be seen through naturally occurring phenomena such as acid rain. So, usually only one proton is considered, and you use stoichiometric coefficient equals to one for all calculations. Step 2: Now click the button “Calculate” to get the pH value Note: Please use a scientific calculator. HNO3 is another strong acid, so the pH of this solution will also be less than 7. The molarity calculator is based on the following equation: Mass (g) = Concentration (mol/L) x Volume (L) x Molecular Weight (g/mol) As an example, if the molecular weight of a compound is 197.13 g/mol and the desired concentration is 10 mM for 10 ml of water based stock solution, the required mass would be = 19.713 (value determined by this calculator).

pH and pOH also have a relationship so that if you do not have enough information to determine one, you can use the concentration of the other. pH paper usually contains a weak acid or a weak base which will respond by changing color at a specific pH. More on this below. The concentration of hydrogen ions are often described by the pH scale as a numeric value.