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The pH is a measure of how acidic or basic(alkaline) an aqueous solution is.
Pure water is neutral, with a pH = 7. Things with a pH <7 are acidic, and things with a pH >7 are basic.
The theoretical pH of an aqueous solution is defined this way:
pH = -log10 [H3O]
Related Information:
The pH approximates the negative logarithm, base 10, of the Hydronium ion (H3O+) molar concentration of an aqueous solution. It's an indicator of the relative acidity or basicity (alkalinity) of the solution.
What makes a solution acidic is the amount of H3O+ in it. A highly acidic solution will have a high concentration of H3O+, and so it will have a low pH. A basic solution has a very low concentration of H3O+, and so it has a high pH. Note that H3O+ and H+ really refer to the same thing, but H+ doesn't actually exist by itself in water: it immediately combines with an H2O molecule to form H3O+ instead.
Substances with very high, or very low, pH are dangerous to human hair, eyes, and skin.
Examples: pH of common substances are:
Stomach acid -- 1
Lemon juice -- 2.2
Pure water -- 7
Milk of magnesia -- 10.5
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What is the pH solution defined as what of the hydrogen ion concentration?
The pH is a measure of the activity of the ion H+ in a solution.
What is a measure of the H plus concentration in a solution?
pH is defined as -log[H+]. This means that if one knows the concentration of hydrogen ion in solution, the pH is simply the negative logarithm (base 10) of that. Similarly, one can find the pOH simply by substituting the concentration of OH- for the concentration of H+ in the aforementioned formula.
What does the pH of a dilution measure?
pH is a measure of the hydrogen ion (H+) activity in a solution.
How do you measure pH without a pH meter?
We can use a pH paper.
What do you measure pH?
The pH of solutions (liquids) is measured.
What is the pH solution defined as what of the hydrogen ion concentration?
The pH is a measure of the activity of the ion H+ in a solution.
What is the definition for hydrogen concentration?
The pH level is defined as the log of hydrogen ion concentration. It is a measure of acidity of a solution.
What can be used instead of phenolphthalein to measure pH?
Litmus paper, or other pH papers can measure pH. Many pH test papers can measure specific pH values. There are also instruments called pH meters that can measure pH.
How is pH related to bases?
pH is a measure of hydrogen ion concentration; a measure of the acidity or alkalinity of a solution.Aqueous solutions at 25°C with a pH less than seven are acidic, whilethose with a pH greater than seven are basic or alkaline.A pH level of 7.0 at 25°C is defined as 'neutral' because the concentration of H3O+ equals the concentration of OH− in pure water.
How can you measure the pH of an unknown liquid?
It is very easy to measure pH using a pH meter.
How do you measure the pH of a solution'?
See the Related Questions links for more information about pH.
What is a measure of the H plus concentration in a solution?
pH is defined as -log[H+]. This means that if one knows the concentration of hydrogen ion in solution, the pH is simply the negative logarithm (base 10) of that. Similarly, one can find the pOH simply by substituting the concentration of OH- for the concentration of H+ in the aforementioned formula.
Why pH 2 is stronger then pH 3?
pH is defined as -log10[H+] it is a logarithmic scale, each gradation is a factor of 10. And just for good measure the minus sign tells you it runs "backwards" So for HCl pH 1 0.1 M pH 2 0.01M pH3 0.001M so pH 2 has 10X concentration of acid of pH2
What does the pH of a dilution measure?
pH is a measure of the hydrogen ion (H+) activity in a solution.
How do you measure pH without a pH meter?
We can use a pH paper.
Is Acidosis defined as a blood pH less than normal?
True/Yes Acidosis is defined as a blood pH less than normal
What cancer does pH cause?
pH is a measure of acidity...
