The letters pH stand for
potential of hydrogen
, since pH is effectively a measure of the concentration of hydrogen ions (that is, protons) in a substance. The pH scale was devised in 1923 by Danish biochemist Søren Peter Lauritz Sørensen (1868-1969).
What is the real name for pH?
The full form of PH is
Potential of Hydrogen
. pH is known as the negative logarithm of H+ ion concentration. Hence the meaning of the name pH is explained as the strength of hydrogen.
Why is pH called pH?
The term “pH” was first described by Danish biochemist Søren Peter Lauritz Sørensen in 1909. pH is
an abbreviation for “power of hydrogen
” where “p” is short for the German word for power, potenz and H is the element symbol for hydrogen. The H is capitalized because it is standard to capitalize element symbols.
What is the Fullform of pH in water?
The pH level of your drinking water reflects how acidic it is. pH stands for “
potential of hydrogen
,” referring to the amount of hydrogen found in a substance (in this case, water). pH is measured on a scale that runs from 0 to 14. Seven is neutral, meaning there is a balance between acid and alkalinity.
What does the word pH mean?
PH,
quantitative measure of the acidity or basicity of aqueous or other liquid solutions
. The term, widely used in chemistry, biology, and agronomy, translates the values of the concentration of the hydrogen ion—which ordinarily ranges between about 1 and 10
− 14
gram-equivalents per litre—into numbers between 0 and 14.
Is pH above 14 possible?
It describes how many hydrogen ions (protons) are present in a solution: the higher the pH, the lower the hydrogen ion concentration, and vice versa. But
the scale does not have fixed limits
, so it is indeed possible to have a pH above 14 or below zero.
What is the pH of blood?
Blood is normally slightly basic, with a normal pH range of
about 7.35 to 7.45
. Usually the body maintains the pH of blood close to 7.40. A doctor evaluates a person’s acid-base balance by measuring the pH and levels of carbon dioxide (an acid) and bicarbonate (a base) in the blood.
Why P in pH is small?
pH is an old abbreviation for a french description of the acidity of water. The French term is “puissance d’hydrogen”, which means “power or strength of Hydrogen”. The p is
small because it refers to a word
.
What increases the pH?
To raise or lower pH, a pool custodian simply
adds acids or alkalis into the water
. For example, adding sodium carbonate (soda ash) or sodium bicarbonate (baking soda) will generally raise the pH, and adding muriatic acid or sodium bisulfate will lower the pH.
Why pH is not more than 14?
One far end is not more than 1M of hydrogen ions, which results in a pH value of not more than 0. While on the other end is
not more than 1M of hydroxide ions
which results in a pH value of not more than 14. … The pH value goes out of the 0-14 range when the concentration of the solution exceeds 1M.
How is pH calculated?
To calculate the pH of an aqueous solution you need to know the concentration of the hydronium ion in moles per liter (molarity). The pH is then calculated using the expression:
pH = – log [H
3
O
+
]
. … On a calculator, calculate 10
– 8.34
, or “inverse” log ( – 8.34).
What is the pH of 1M NaOH?
The pH of 1M NaOH is
13
.
What is the pH of urine?
The American Association for Clinical Chemistry says the normal urine pH range is
between 4.5 and 8
. Any pH higher than 8 is basic or alkaline, and any under 6 is acidic. A urine pH test is carried out as a part of a urinalysis. After performing a urine pH test, doctors can use the results to diagnose various diseases.
Is pH a hydrogen?
pH is really
a measure of the relative amount of free hydrogen and hydroxyl ions in the water
. Water that has more free hydrogen ions is acidic, whereas water that has more free hydroxyl ions is basic. Since pH can be affected by chemicals in the water, pH is an important indicator of water that is changing chemically.
Who discovered pH?
Søren Sørensen
. In 1909 Sørensen, a Danish chemist, introduced the concept of pH as a convenient way of expressing acidity.
Is a pH of 0 possible?
The pH value
can be less than 0 for very strong acids
, or greater than 14 for very strong bases. The pH scale is traceable to a set of standard solutions whose pH is established by international agreement.
