what is pH?

Answer 1

The term pH can be broken down into two parts:

1) "p"; represents the mathematical symbol for -log (negative logarithm) of the number in question.

2) “H”; represents the chemical symbol for Hydrogen.

The correct way to write this is by using a small "p", and a capital "H". "pH" By changing the way it is written will make it mean something completely different.

Simply put...

Acidic solutions have a pH between 1 and 6.9
FACT: (your stomach contains HCl and it has a pH of 2.0).

Alkaline solutions have a pH between 7.1 and 14.0.
FACT: (your small intestine has a pH of 9.0).

Neutral solutions are neither acidic nor alkaline so their pH is 7.0.

Answer 2

pH stands for the power of Hydrogen. It is the negative log of hydrogen concentration. Thus pH=-logbase10[H+] where the hydrogen ion concentration is expressed in moles per liter.

In general terms, pH is a measure of acidity or basicity. 7 = neutral. Below 7 is acid. Above 7 = base. Remember that this is a logarithmic scale, so a substance with pH 5 is 10 times more acid than something with pH 6 and something with pH 4 is 100 times more acid than something with pH 6.

Answer 3

Literally it is the (negative) log of the hydrogen ion activity, typically estimated as the hydrogen ion concentration.

A pH of 7 is considered "neutral," higher pHs are basic and lower pHs are acidic.

Remember, that being a log scale, a pH of 10 is much more basic than a pH of 9, and a pH of 3 is much more acidic than a pH of 4.

Answer 4

pH is a convenient way of stating the concentration f H+ (or OH-) ions in a solution. In doing so, it tells how acidic or basic a solution is. Mathematically, pH = -log*concentration of H+ ions, written -log[H+]. For example if the concentration of H+ ions in a solution is 10^-7M(mol/L), the pH = -log(10^-7) = 7. The values of pH usually range from 1 to 14, with 7 referring to a neutral solution (equal number of H+ ions and OH- ions), numbers less than 7 referring to an acidic solutions (higher H+ concentration than OH- concentrations), and numbers greater than 7 referring to a basic solution (lower H+ concentration than OH- concentration).

Answer 5

pH = -log(H+)
That is the equation of finding pH. pH tells you the concentration of H+ ions in a solution. Explaning it in a another way A way to say the concentration of acid.

Answer 6

pH is a measure of the activity of hydrogen ions (H+) in a solution and, therefore, its acidity. For dilute solutions, however, it is convenient to substitute the activity of the hydrogen ions with the molarity (mol/L) of the hydrogen ions (however, this is not necessarily accurate at higher concentrations [1] [2]).

In aqueous systems, the hydrogen ion activity is dictated by the dissociation constant of water (Kw = 1.011 × 10−14 M2 at 25 °C) and interactions with other ions in solution. Due to this dissociation constant a neutral solution (hydrogen ion activity equals hydroxide ion activity) has a pH of approximately 7. Aqueous solutions with pH values lower than 7 are considered acidic, while pH values higher than 7 are considered basic.

The concept was introduced by S.P.L. Sørensen in 1909, and is purported to mean "pondus hydrogenii" in Latin.[3] However, most other sources attribute the name to the French term pouvoir hydrogène. [4] [5] [6] In English, pH can stand for "hydrogen power,"[4] [5] [6] "power of hydrogen," [7] [8] or "potential of hydrogen."[3] [9] [10] All of these terms are technically correct.

Answer 7

pH is an electrochemical method used to determine acidity/alkalinity on a scale of 1to 14, where a value 0f 7.00 represent neutrality. Specifically, it is the negative log of the reciprocal of the hydrogen ion activity.

Answer 8

PH is a measure of the acidity or alkalinity

Answer 9

pH is a measure of the acidity or basicity (alkalinity) of a material when dissolved in water

Answer 10

pH means the levl of basicity or acidity of an object