Acid and Base indicator?
813249
Let's take the HCl part first. Since HCl is an acid a solution of HCl contains lots of H+ ions. So when you add HCl the concentration of H+ ions increases making it more probable for H+ ions to colide and react with In- ions than before. To be more precise the reaction In- + H+ -> HIn will become more probable than before, so it will dominate over the HIn -> In- + H+ reaction until a new equilibrium is reached (equilibrium is characterized by the left to right and right to left reactions being equally probable). So in equilibrium the concentration of HIn will be higher after you have addeed HCl.\n\nIt's a very general equilibrium principle called leChateliers principle which comes into play here. The principle can be casted as follows: When you disturb an equilibrium (for instance by adding or removing one of the constituting components) the equilibrium will be shifted in a direction which tries to cancel the change. In this example: We add H+ and the equilibrium tries to remove some of the H+ ions again by shifting the equilibrium to the left (meaning that more H+ reacts with In- to get HIn).\n\nIf you add OH- instead the OH- will neutralize the H+ in the solution (acid + base gives water):\nH+ + OH- -> H2O\nso you are effectively removing H+ and according to leChateliers principle the equilibrium will try to create new H+ ions by shifting to the right (so you will have less HIn and more In- than before you added OH-). The microscopic explanation is again that removing H+ makes the reaction In- + H+ -> HIn less probable than before meaning that the reaction HIn -> In- + H+ will be dominating until a new equilibrium is reached so some HIn will effectively be turned into In-.\nHope this helps.
326138
the only way to determine the rate of a reaction is to do the experiment yourself.\n\nUse starch as the indicator and plenty of acid.
577084
Acid + base = salt + water.\n\nUnbalanced eqn is: Al(OH)3 + H2CO3 --> Al2(CO3)3 + H2O
1031684
You get the little strips and dip them in a cup of whatever substance you are testing. Then the strip should change color based on its Ph level, and compare the strips to the little chart that comes with it to get the exact Ph level.\n\nPS. If you're testing a substance that isn't a liquid but is more gelly or if it is powder that has been reduced, add a little water, but make sure there are no chemicals in the water that will change the results.
1073643
the easiest way is to use a pH paper to test the pH. and just compare the reading with the one given with the test kit. \n\nOr you may do some neutralisation. And then calculate with the  amount of alkali you use for neutralisation. By that you can calculate the concentration of hydroxide ions in the alkali that you use. Then calculate the pOH for the alkali you use. pH=14 - pOH.\neg. \n1mol of NaOH gives you 1 mole of OH ions.\nso the pOH = -log1 = 0\npH = 14 - 0 = 14\n\nJust some rough guide. Hopefully it helps...Good luck.
241776
p stands for "potenz" which means potential, H stands for Hydrogen. Thus, pH stands for "Hydrogen potential" and it's a measure of acidity.
846112
corrosive=basic, \nbelow 7 on the pH scale is acidic and above is basic, \nOH- ions are basic, H+  ions are acidic, \nlitmus paper is blue when something is basic and red when something is acidic, \nand electrolytes are acidic because they contribute H pos ions in a chemical reaction.
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.
748799
an acid is a proton donor while a base is a proton acceptor or an electron donor\n Hope i'm right
602416
http://www.scienceaid.co.uk/titration.html
892272
It tells you when you're at the end point, and the end point is where ever you want it to be, hopefully past but not too far from the equivalence point. \n\nThis isn't always used for pH. Let's say you wanted to know the concentration Sodium in a Na2C2O4 solution. You could use standardized KMnO4 (which is purple) and do a redox reaction which would make CO2 and a bunch of cations (K, Mn, Na). This would be a redox titration, which is different from acid base. This redox titration is actually pretty interesting because a reagent is the indicator, so the end point is when the solution changes to the color of the reactant (this particular reaction is also self catalyzing, which is kinda neat as well).
969526
Bases to neutralize acids,,;-)=
942504
should be a ph of 9.3
1057594
I think this is how you do it:\nacid and base is measured in terms of pH and pOH. as you know, the H makes it acidic and the OH makes it basic, and if you mix an H and OH, you get water, which is to say it was neutralized.\nSo, let's say you have HBr with a pH of 4. You that pH is a measure of the concentration of H present in the mixture. So, to get the actual number you do -10ph, and you'll get a number like 10^-5 or something. So, to neutralize that many Hs, that's how many OH's you need. so, you'll need a pOH 4, which is the same thing is a pH of 10 (pOH = 14 - pH). \nhope that helps, good luck. and read the book, and do some of hte exercised in the book.
224478
The pH of a solution can be measured by titration, which consists of the neutralization of the acid (or base) by a measured quantity of base (or acid) of known concentration, in the presence of an indicator (a compound the color of which depends on the pH). The pH of a solution can also be determined directly by measuring the electric potential arising at special electrodes immersed in the solution.
618488
Look at their conjugate bases and whichever is more stable will have the weakest acid. PKA values are also easy to prove this becuase it is a realtion of the H+ content.
879259
The first answer does give an indication, but it is not a definitive test.  Take a sample of the substance, drop acid on it as before, but hold a wet piece of blue litmus paper over the bubbles.  If the litmus turns red, then the gas is CO2, and the substance is a carbonate.