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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

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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.


Why is the pH of pure water 7?

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)


What is the pH of pure water at 313 K if Kw at that temperature is 2.917 x 10 -14?

Kw = [H+][OH-] [H+] = 10-pH = 10-6.17 For [OH-] remember that heat causes more water molecules to self-dissociate but for every new H+ generated, a OH- is generated as well. Therefore, the concentration of H+ and OH- is equal. [OH-] = 10-6.17 Kw = [H+][OH-] = 10-6.17 * 10-6.17 = 10-12.34


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)