This may be a coincidence that this number keeps popping up. It maybe that the acid you are using has an Atomic Mass weight of 75. And if you are always using this acid then 75 will always pop up.
See related link for a little more info
it has something to do with acidity levels.
An even number really has no meaning
you can divide a number which make it
what does the number 27 mean?
It is an integer.
Titratable acidity & Total acidity in wine: Total acidity: proton equivalence of the amount of organic acid anions present in a wine. It is the number of protons + dissociation. Titratable acidity: number of protons recovered during a titration with a strong base to a specified endpoint. It can also be expressed as a molar quantity. Many people use titratable acidity and total acidity as synonyms, but they are not. The titratable acidity is always less than the total acidity, because not all of the hydrogen ions expected from the acids are found during the determination of titratable acidity. However, titratable acidity is easier to measure.
The number of replaceable hydroxyl (OH-) Ions in a base is called the acidity of that base.
the pH
it has something to do with acidity levels.
10x increase in acidity
pH is an indication of acidity.
pH is a number which covers both acids and alkalines. Acidity is the degree of how sour of acidic something seems. One is a measurment the other isn't.
pH level, the lower the number, the more acidic (down to 1), the higher, the more base (up to 14), water is at 7. Acidity and base level is what makes food sour or bitter, respectively.
An even number really has no meaning
All acidity is due to hydrogen ions. The pH is the measure of the concentration present of these ions, but in reverse: the lower the pH, the higher the acidity. On a scale of 0 -14, a pH of 7 is neutral. Decreasing numbers indicate increasing acidity. Each number is ten times more acid than the preceding number (a negative logarithm is involved, but we need not understand the formula to understand the principle). Pure water has a pH of 7.
When referring to acidity of a solution one uses the pH scale. The lower the number, the higher the acidity. Pure water is said to be neutral, and is a 7 on the scale. Anything with a lower number ranking is acidic, and anything with a higher ranking is basic.
The abbreviation "pH" stands for "potential of hydrogen." It is a measure of the acidity or alkalinity of a solution and is commonly used in chemistry. The pH scale ranges from 0 to 14, with 7 considered neutral. Solutions with a pH less than 7 are acidic, while those with a pH greater than 7 are alkaline or basic. The pH scale is logarithmic, meaning that each whole number change represents a tenfold difference in acidity or alkalinity