0
It almost never is. BUT
(pH stands for potential hydrogen)
pH is a (negative of) the log of the number of positive ions in the water.
At 25 degrees C, thermal agitation in pure water will produce 10 to the minus 7 (moles of) ions per liter,
thus pH 7 (at 37 degrees it's 7.4)
That is a mathematical consequence of the dissociation of water into H30+ and OH- ions, which is a concentration of approx 1 times 10 to the power of -7 of each ion in pure water.
Add your answer:
Earn +20 pts
What is the pH level for deer park bottled water?
Ultrapure water has the pH=7; bottled water is not pure, so the pH is variable depending to the type of water.
Pure water has a pH of 7?
Yes and no. Pure water at 25°C has a pH of 7.0. However, water autoionises, that is splits into H+ (in the form of H3O+) and OH- spontaneously. This process is accelerate by increased temperature, that is, occurs more readily at higher temperature. Therefore at a higher temperature there will me more H+ and OH- in solution (always in equal proportions). As pH is a measure of the amount of H+ in solution, as the temperature increases, the pH will lower (lower pH means more H+). i.e. at 37°C the pH of pure water, the same water as above, will be 6.81. This water will not be acidic though, as the OH- concentration has increased by the same amount, it's just that pH only measures the pH concentration. Conversely, cool the water, and the pH will go up, 7+ for same reasons.
PH of pure water?
Water is never by itself in the human body, blood, which is obviously mostly water, has a pH of 7.4, slightly basic. Lymph, even more water than blood, is a little higher at 7.5
What is the pH level of Kroger purifed water?
Purified water should have a pH level of 7. The values of 7 is neutral on the pH scale.
Definition of neutral chemical?
The definition of a neutral chemical is an aqueous solution with a pH of 7.0 ([H+] = 1.0 x 10-7 M)
What pH is pure water?
Pure water has a pH of 7, which is considered neutral on the pH scale.
Pure liquid water has a pH of what?
Pure liquid water has a neutral pH of 7.
What is the PH level of pure water?
The pH level of pure water is 7, making it neutral.
What is the pH of chemically pure water?
Chemically pure water has a neutral pH of 7 at 25°C.
Example of a substance with pH of 7?
Pure water at room temperature typically has a pH of 7.
What is pure water in the pH scale?
Pure water has a pH of 7 on the pH scale, which is considered neutral. This means that it is neither acidic nor basic.
What subtance has a pH of 7?
Pure water has a pH of 7.0.
What is the pH of cold water?
If the water is pure, the pH of that is 7, neutral yeah.
. Which substance would have a pH close to 7?
The pH of pure water is 7
What is is a substance with a pH of 7?
pure water
What Substance has pH 7?
Pure Water
What color does pH paper turn dipped in water?
Assuming the water is pure... there will be no change - since pure water has a pH of 7.
