Does anyone out there know what REVERSE ALKALINITY means?
546441
Do you mean reverse osmosis? Reverse osmosis is used to remove troublesome amounts of alkalinity in water.
138095
If we look at this partial equation, we can see that it most closely resembles a single displacement equation. Since Na is a metal and in group IA, it will have a +1 oxidation state when it combines. This means that it will combine with the Cl (with an oxidation number of -1) to form NaCl. The hydrogen is released as hydrogen gas (H2). The unbalanced equation is: \n\n                                                                        Na  +  HCl -->   NaCl  +   H2 \n\nInventorying both sides of the equation and adjusting the coefficients to balance, the equation becomes: \n\n                                                                        2 Na  + 2 HCl --> 2 NaCl  +  H2
492219
Hmmm....\n\nYour science grade cannot be helped if you can't figure out that Hydrogen, a gas, is not an alkali metal.
1123465
Na2S + 2 HCl > H2S + 2 NaCl  \n\nH2SO4 + BaOH > H20 + BaSO4  \n\nNH4Cl + NaOH > NaCl + NH4OH\n\nAgNO3 + NaCl > AgCl + NaNO3\n\nnot sure about complete or reversible..:)
1045027
Simpliest way to understand pH is the acidity or alkalinity of a substance or compound. pH range is from 1-14. pH 1 is the most acidic while pH 14 is the most alkaline while pH 7 is Neutral.\n\nIon selective electrodes are electrodes dedicated to a certain ion like copper, nickel etc..etc..\n\nThere are many suppliers of pH electrode and I recommend u try search yahoo for ISI or innovative sensors. The company dedicate their research and development on different sensors and pH/ion selective electrodes for industrial, scientific & research etc. What I know even NASA uses their electrode however better search about this to confirm....lah! http://www.innovativesensors.com/
211023
wow, well put mrjeffy! I have one thing to add though. Because all acids and bases are electrolytes, you can use pH to determine what is and isn't an electrolyte in a solution. If it come out as acidic or basic, it is and electrolyte(the darker, the more basic or acidic). If it comes out neutral, like Distilled Water, it is not. Also don't forget that non-electrolytes will not completely dissolve into solution in water.
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.
186625
llinois groundwater scientists have found microbial communities thriving in the slag dumps of the Lake Calumet region of southeast Chicago where the water can reach extraordinary alkalinity of pH 12.8. That's comparable to caustic soda and floor strippers -- far beyond known naturally occurring alkaline environments.\n\nThe closest known relatives of some of the microbes are in South Africa, Greenland and the alkaline waters of Mono Lake, California.
297566
Pure water (which is impossible to get, by the way), has a pH of exactly 7.0. This is because the Kw of water is 1.0e-14, so you get 1.0e-7 M of hydronium ions (and 1.0e-7 M of hydroxide ions). The pH is defined as -log[H+], so the negative log of 1.0e-7 is exactly 7.0.\n\nEDIT: sammi, 7.2 would be slightly basic.
332420
ummm, i dont understand what ur asking, but if u wanna know how its generated, it has something to do with positive ions of a molecule flowing in one direction, and negative ions flowing in either the same of opposite direction forming direct and indirect currents, or at least that's what i think it is
713150
In the Brønsted-Lowry classification, any chemical species, ionic or molecular, capable of accepting or receiving a proton (hydrogen ion) from another substance. The other substance acts as an acid in giving up the proton. A substance may act as a base, then, only in the presence of an acid. The greater the tendency to accept a proton, the stronger the base. The hydroxyl ion acts as a strong base. Substances that ionize in aqueous solutions to produce the hydroxyl ion (OH), such as potassium hydroxide (KOH) and barium hydroxide [Ba(OH)2], are also conventionally called bases.\n\nAny compound having highly basic properties, strong acrid taste, and ability to neutralize acids. Aqueous solutions of alkalies are high in hydroxyl ions, have a pH above 7, and turn litmus paper from red to blue. Caustic alkalies include sodium hydroxide (caustic soda), the sixth-largest-volume chemical produced in the United States, and potassium hydroxide. They are extremely destructive to human tissue; external burns should be washed with large amounts of water. The milder alkalies are the carbonates of the alkali metals; these include the industrially important sodium carbonate (soda ash) and potassium carbonate (potash), as well as the carbonates of lithium, rubidium, and cesium, and the volatile ammonium hydroxide. Sodium bicarbonate is a still milder alkaline material.\n\nIn Summary base is a general word (carbonates, hydroxides ...of alkali metals, alkaline earth metals, Transition metals) and alkali is used specifically for carbonates, hydroxides... of alkali group metals.
208490
Alkaline water is also know as mineral water, cos they continue carbonate that increase the alkalinity of the solution.\n\nIn many places, "mineral water" is often colloquially used to mean carbonated water (which is usually carbonated mineral water, as opposed to tap water).\n\nMineral water is water containing minerals or other dissolved substances that alter its taste or give it therapeutic value. Salts, sulfur compounds, and gases are among the substances that can be dissolved in the water. Mineral water can often be effervescent. Mineral water can be prepared or can occur naturally.\n\nTraditionally mineral waters would be used or consumed at their source, often referred to as taking the waters or taking the cure, and such sites were referred to as spas, baths or wells. Spa would be used when the water was consumed and bathed in, bath when the water was not generally consumed, and well when the water was not generally bathed in. Often an active tourist centre would grow up around a mineral water site (even in ancient times; see Bath). Such tourist development resulted in spa towns and hydropathic hotels (often shortend to Hydros).\n\nIn modern times it is far more common for mineral waters to be bottled at source for distributed consumption. Travelling to the mineral water site for direct access to the water is now uncommon, and in many cases not possible (because of exclusive commercial exploitation). There are over 3000 brands of mineral water available commercially worldwide[1].
572241
There is some info at this link, including what foods are the lowest alkaline.\nhttp://www.keytohealthclinic.com/alkalinediet.html
583395
hmmm! go to this site>>>\n Candidate Reagents for Dissolution of Hanford Site Tank Sludges ...File Format: PDF/Adobe Acrobat - View as HTML\nIn none of the 5 runs with these compounds was the complete dissolution of ... acidic or moderately alkaline media without perturbing the oxidation state of ...\n \n  >>>> www.pnl.gov/main/publications/ external/technical_reports/PNNL-14378.pdf
182906
pH is negative log of the concentration of hydrgen ions.\n\nSo pH of 1 would mean 10^(-1) or 0.1 concentration of hydrogen ion.\n\npH of 14 would mean 10^(-14) or 0.00000000000001 concentration of hydrogen ions.\n\nThat would mean that with a no. between 1 and 14 we can express a very wide range of concentrations.
242245
This is the definition of a buffer.  It will control the pH against extreme changes.  If you add a small amount of strong acid, the weak base will neutralize it, bringing the pH back near the initial condition.  The reverse is true for adding strong base.
281104
It appears to be in relation to energy production.  I have referenced a hyperlink to a PDF file that refers to this term with in its context...the file does have some English translation.