what are the advantages of having a pH meter in oceanography?
156134
I think it helps to guess the acidity of the sample so that you can use appropriate instruments
87692
http://www.oceanexplorer.noaa.gov/technology/technology.html
539761
It because fish produce ammonia which dissolves to form ammonia solution. The ammonia solution is basic thus it increases the pH of water in the aquarium.
968670
Water in the sea can vary in salt concentration, temperature and in ion ratios. The first two create differences in the density of the water and therefore warm / less salty (light) water floats on cold/ salty (heavy) water.\n\nSince these currents do not mix easily, different ratio's of ions in seawater can maintain their difference. These differences are created by sources of ions (vulcanic activity which can create specific ions, incoming rivers) or by the fact that certain ion concentrations (HCO3-, HSOx-) are very temperature dependent. \n\nusefull info can be found on http://www.biosbcc.net/ocean/marinesci/02ocean/swcomposition.htm
991807
uh a pH meter will help with the hydrogen iodide because it's a strong acid.  As for the I2 I have no idea...
65789
Temperature needs to be moderate so that water can exist in liquid form.  Gravity needs to be enough so that the liquid water doesn't escape into space.  An atmopshere is nice unless you like skin cancer and burnt vegetables.  Surface is not as important as the atmopshere.  Some rocky ground would be nice though.
610740
Your blood keeps its pH range stable.
211439
The soap has phosphate and nitrate salts that help to growth of aquatic plants in marine. increasing the growth of them will increase consuming of water oxygen,therefor the life of aquatic animals should be in hazard.
57350
Well for your information i would like to tell you that the pH value of lemonn is 2.5. Still if you wold like to find out, you could use either pH strips which indicate a pH  range to you or use a pH meter. This will give you the exact pH value. All the best!!
558785
Run to a pool supply store and pick up a water PH kit...they aren't expensive and it's got directions.
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
665308
There are many definitions, but the most used is this:\nBases tend to either capture protons (H+) or to release proton-capturing species. \nAcids tend to release protons.\n\npH is just a measure of the amount of protons in a solution. Low pH means a high concentration of H+ (acid solution), and high pH the opposite (alkaline solution).
64779
henryclayc1949 has the most compelling answer, in my opinion. I thought I would add just a bit more to help.  \n\nTap water, and in fact most water that one encounters, has dissolved gases in it, which are liberated as the solubility of air decreases as the water warms up (this is one of the things that is such a concern about the greenhouse effect; as the ocean warms, extra carbon dioxide  will come out of solution in the ocean). \n\nAs the water gets warmer, some vaporizes, forming water vapor bubbles. The pressure in the water vapor bubbles has to exceed the pressure of their surroundings to survive. On the bottom of the container, the vapor pressure in the bubbles has to exceed the pressure at that location. At the top of the container, the required vapor pressure is less, obviously. \n\nThis is less energy (and therefore temperature) is required to boil water on top of a mountain than at sea level.
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.
949101
That depends on the source you get it from!\n\nIn theory, water has a pH of 7.  If you could separate it from all influences, the disassociation constant of water would keep about 10^-7 M amounts of both [H+] and [OH-].  If you distill pure water and measure the pH, that's what you'll get.\n\nOver a couple hours the pH will change as the pure water absorbs carbon dioxide from the atmosphere.  This reacts with the water to form carbonic acid, lowering the pH to about 5.8.\n\nIn rain and the like, this effect has been countered, however, with other impurities that react with the carbonic acid, as well as producing their own effects.  Sea water has a pH of about 8.0, while water from streams and rain is usually closer to 7.
520071
Diatoms. A benefit is that in criminal investigations it can link someone to a crime scene. Also, for example, if you drown someone in a bathtubs and then throw them in a lake forensic scientists can examine the lungs full of water, observe there are no diatoms in her lungs, and conclude she did not drown in the lake but was murdered and place there. Drawbacks of diatoms is most people would prefer they are removed from the water they drink, and this is why there's a water purification process, expensive, but it works.\n\nAlso amoebas can be in water and produce amoebic dysentery, a drawback. The only benefits to an amoeba are keeping the ecosystem of the pond or lake healthy, perhaps consuming harmful bacteria or what not.\n\nAlgae are an organism that lives in the water to provide food for fish. drawbacks are when nitrogen farm run off hits the water it accelerates its growth causing oxygen depleted water and deaths of many fish.\n\nLastly, fish live in the water to provide us food, but some fish eat us as food too!
1034583
For example, the density of water is 1000 kilograms per cubic meter (in SI units), so the weight of a cubic meter of water is 1000 kg times g, the acceleration of gravity (9.8 m/sec2), or 9800 newtons. This force is exerted over 1 m2, so the pressure produced by a 1-meter depth of water is 9800 pascals (the Pa is the SI unit of pressure, equal to 1 newton per square meter). \n\nThe unit of pressure used in atmospheric work on Earth is the hectopascal; 1 hPa = 100 Pa. So the pressure 1 m below the surface of water (ignoring the pressure exerted by the atmosphere on top of it) is 98 hPa. Standard atmospheric pressure is 1013.25 hPa, so it takes 1013.25/98 = 10.33 meters of water to produce a pressure of 1 atmosphere. (That's about 34 feet, for those who like obsolete units.) \n\nThe pressure in the ocean increases by about 1 atmosphere for every 10 meters of depth. The average depth of the ocean is about 4 km, so the pressure on the sea floor is about 400 atmospheres.