0
pH has no unit because it's a it's a logarithmic scale, not a measurement like grams or degrees.
The pH number directly relates mathematically to the actual concentrations in solution. Concentration itself does have units, but pH really only looks at the power (or exponent) of the concentrations. And, for that reason the unit doesn't carry.
For example:
pH = - log [H30+] (mathematical definition)
= negative logarithm of the hydronium ion concentration.
What this means is that if a solution has a concentration of 10-7 M [H30+] or (0.0000001 moles per litre of the hydronium ion), the negative log of this number = 7. Therefore the pH = 7.
But it's not 7 moles per litre or 7 moles or any other transferable unit. It's just 7.
Hope that helps a little.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agopH does have a unit. It is the logarithm of molarity, which is such a strange unit, that is assumed and omitted by all chemists.
Add your answer:
Earn +20 pts
What is th unit of measure used to express the concentration of an acid or base?
pH value(not the 'unit' just the scale)
What is phtwo?
it is science and it means pH scale
What is the scale used to indicate the strength of an acid or base called?
pH Scale
What is sodium hydroxide in a PH scale?
Sodium Hydroxide or NaOH is a highly basic compound. On the pH scale it has a pH of 14.
What does phtwo mean in sciene?
The phtwo is another name for the ph scale.
What does every unit on the pH scale represent?
Every unit represent the activity of the ion H+.
What is the relationship between each pH unit on the pH scale?
They are logarithmic. A change of one unit is order of magnitude in difference; that is 10 times as much.
What is th unit of measure used to express the concentration of an acid or base?
pH value(not the 'unit' just the scale)
What is precision pH?
pH meters are precise to +/- 0.1 to +/- 0.01 pH unit (+/- 6 to +/- 0.6 mV) qith a full-meter scale of 14 pH units (about 840 mV)
Is there a two-folded increase in hydrogen for every pH unit as the scale decreases?
ten-folded
What scale is used to determine pH?
the pH scale
What number is highest on the pH scale?
The highest number on the pH scale is 14. The pH scale goes from 0 to 14.
What colour is acid on a PH scale?
The Ph scale does not have colours.
Where is a strawberry on the pH scale?
strawberries are at 3.5 on the pH scale
What is phtwo?
it is science and it means pH scale
What scale measures the concentration of hydrogen ions?
The scale that chemists use to describe the concentration of hydronium ions in a solution is know as the pH Scale
What is the midpoint of the pH scale?
The midpoint of the pH scale is 7.
