Which of the following is not a factor that affects pH of water?
596938
temperature doesn't affect pH (doesn't change acidity)
374165
PH\nFrom Wikipedia, the free encyclopedia\n \npH (potential hydrogen) is a measure of the activity of hydrogen ions (H+) in a solution and, therefore, its acidity or alkalinity. In aqueous systems, the hydrogen ion activity is dictated by the dissociation constant of water (Kw = 1.011 × 10−14 at 25 °C) and interactions with other ions in solution. Due to this dissociation constant a neutral solution (hydrogen ion activity equals hydroxide ion activity) has a pH of approximately 7. Aqueous solutions with pH values lower than 7 are considered acidic, while pH values higher than 7 are considered alkaline
448790
Alkalinity is usually measured by the presence of bicarbonate (HCO3-) and carbonates (CO3=) and acts to buffer water from acidic inputs, thus is a measure of the buffering capacity of water. Water with high alkalinity have high pH values while water with low alkalinity have low pH values. The hardness of the water is usually determined by the amount of calcium and magnesium salts present in water and is associated with the presence of carbonates. Hard water is generally more productive than soft water waters and can accept more input of salts, nutrients, and acids to their system without change than can soft water waters. So basically, it’s because of the presence of the magnesium. \n\nHope this helps and hope I didn’t confuse you.
804094
dissociation of co2 in water produces produces an acid proton:\n\nCO2 + H2O ⇌ HCO3− + H+\n\nKa = 4.30×10−7 mol/L; pKa = 6.36. \n\nwithout knowing the amount of CO2 or water you used, it is impossible to calculate the pH.\n\nassuming its a 0.1M solution (0.1mol of CO2 dissolved in 1dm³ of water), pH would be around 3.7, whereas strong acids would hit pH 0 at far lower concentrations.
675531
It depends.  \n\nTable salt, NaCl, theoretically doesn't effect the pH, strong electrolytes are weak acids and bases, however in practice I believe that it slighty basic.  However salts can be either Basic, like soduim cyanide, NaCN, or acidic, like ammonium cloride, NH4Cl.\n\nSugar does effect the pH because of the acidic proton on the alcohol portion of the sugar.  This does not mean that a sugar is acidic, but it means that if sugar is put with a strong base the pH will go down because some of the base will react with the sugar.
69214
Concrete can affect the ph of soil and water that it comes in contact with. The larger the body of water, the less potential effect.
355477
Buffers resist change in pH. This is generally a result of the buffer containing a mix of a weak acid and the salt of the conjugate base. \n\nWhen you add NaOH to the buffer, it dissociates into Na+ and OH-. The OH- reacts with the H+ ions which the weak acid has dissociated into (along with the conjugate base) up to the acid dissociation constant, Ka, of the acid.\n\nThis shifts the equilibrium of the dissociation reaction of the acid, and more dissociates, maintaining a relatively stable pH, as compared to when the NaOH is added to the distilled water. (If you had instead added a base, it would instead have shifted the equilibrium of the base, and, instead, more of the base would have reacted with the free H+, again, keeping the pH relatively constant)
184683
pH is the measure of acidity or basicity(alkalinity) of a solution. When pH increases, the solution is more alkaline and when pH decreases the solution is more acidic. A pH of 7 implies that the solution is neither basic(alkaline) nor acidic but neutral. Check the answer to one of the similar questions on Yahoo answers at the following page.
832121
Nope, :s sorry\n\nIts the same as before. The K(w) of water is 1.0 *10^-14\nK(w) = [H+][OH-]\n1.0*10^-14=[H+][2.8*10^-4]\n[H+]= 3.57*10^-11\n\npH=-log[H+]\n the pH is 10.4\n\nand pOH =-log[OH-] u have that in the ques\n\nHappy trails
966389
Because it is quite a mild solution. There's plenty more water than acid, therefore you may assume that the properties of the water haven't changed much.
1027845
Roughly 6.9, since you can't raise the pH of pure water above 7 by adding an acid.
444550
The difference in solubility of the components allows for separation.  I don't remember the specifics, but that is the reason.  Water will not have a big enough difference.
455471
pH (potential hydrogen) is a measure of the activity of hydrogen ions (H+) in a solution and, therefore, its acidity or alkalinity. In aqueous systems, the hydrogen ion activity is dictated by the dissociation constant of water (Kw = 1.011 × 10−14 at 25 °C) and interactions with other ions in solution. Due to this dissociation constant a neutral solution (hydrogen ion activity equals hydroxide ion activity) has a pH of approximately 7. Aqueous solutions with pH values lower than 7 are considered acidic, while pH values higher than 7 are considered alkaline..\n\npH = -log(concentration of H+)\njust use the equation to figure it out.\nhttp://en.wikipedia.org/wiki/PH
441451
Well, there's a decomposition reaction.\n\nH2CO3 <--> H2O + CO2\n\nCarbonic acid (H2CO3) doesn't not exist much at all, because it decomposes into H2O and CO2. But some of the carbonic acid remains, pushing up the hydronium concentration, which by definition makes water more acidic. Therefore, getting rid of the CO2 in water makes water less acidic (raising the pH).
1180992
depends on the strength of the base actually.  water is amphoteric which means it can act like an acid or a base.  if a weak base is put in water the water can neutralize it, but water is quickly overrun yielding the below equation.\n\nB + H2O yields HO- +BH\n\nthis makes the water basic.
727503
The pH value would increase, by how much would depend on the volume and concentration of the sodium hydroxide used.\n\n2.0Molar would have a much greater effect than 0.1Molar in the same volumes added to your water.
117720
Essentially pH is important in how reactions happen, and in a system as precise as the human body, any small change can have an effect on how the chemical reactions occur.  Enzymes might not work anymore, your blood cells might not be able to get as much oxygen, etc.