# What does pH scale stand for?

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potential of Hydrogen

### what does pH stand for?

potential hydrogen

What is the lowest pH possible? The lowest pH of −3.6 is the lowest known for any water in the environment.

### who invented the pH scale?

Søren Peder Lauritz Sørensen

### What has a pH of 13?

Common alkalis are seawater (pH 8), household ammonia (pH 11), oven cleaners (pH 13), and the very strong alkali, sodium hydroxide (pH 14). The addition of a strong base or alkali material, such as sodium hydroxide ( NaOH ), to water makes the resulting solution very low in active acid concentration.

### why pH scale is up to 14 only?

The neutral value of the pH depends on the temperature, being lower than 7 if the temperature increases. Pure water is neutral, pH 7 at (25 °C), being neither an acid nor a base. Contrary to popular belief, the pH value can be less than 0 or greater than 14 for very strong acids and bases respectively.

### Is pH above 14 possible?

But the scale does not have fixed limits, so it is indeed possible to have a pH above 14 or below zero. For example, concentrated hydrochloric acid can have a pH of around -1, while sodium hydroxide solution can have a pH as high as 15.

### What is pH formula?

How to Calculate pH and [H+] The equilibrium equation yields the following formula for pH: pH = -log10[H+] [H+] = 10pH. In other words, pH is the negative log of the molar hydrogen ion concentration or the molar hydrogen ion concentration equals 10 to the power of the negative pH value.

### What substance has the highest pH?

The pH scale Increasing pH (Decreasing Acidity) Substances 0 (most acidic) Hydrochloric acid (HCl) 1 Stomach acid 2 Lemon juice 3 Cola, beer, vinegar

### What is the world’s strongest acid?

The carborane superacids may be considered the world’s strongest solo acid, as fluoroantimonic acid is actually a mixture of hydrofluoric acid and antimony pentafluoride.

### What is the pH of water?

pH and Water The pH of pure water is 7. In general, water with a pH lower than 7 is considered acidic, and with a pH greater than 7 is considered basic. The normal range for pH in surface water systems is 6.5 to 8.5, and the pH range for groundwater systems is between 6 to 8.5.

### What is the pH of blood?

The pH scale, ranges from 0 (strongly acidic) to 14 (strongly basic or alkaline). A pH of 7.0, in the middle of this scale, is neutral. 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.

### What does pH mean for a woman?

What is vaginal pH? pH is a measurement of how acidic or alkaline (basic) a substance is. The scale runs from 0 to 14. A pH of less than 7 is considered acidic, and a pH of more than 7 is basic.

### Is a negative pH possible?

It’s definitely possible to calculate a negative pH value. In practice, any acid that yields a concentration of hydrogen ions with a molarity greater than 1 will be calculated to have a negative pH. For example, the pH of 12M HCl (hydrochloric acid) is calculated to be -log(12) = -1.08.

### What is a normal pH level?

Blood pH: The acidity or alkalinity of blood. The pH of any fluid is the measure of the hydrogen ion (H-) concentration. A pH of 7 is neutral. The lower the pH, the more acidic the blood. The normal blood pH is tightly regulated between 7.35 and 7.45.