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In a solution, hydrogen ions normally bond with molecules of water, forming H3O+ (hydronium) ions. Thus, the concentration of the hydronium ions will be the same as the concentration of hydrogen ions, which is related to the pH of a solution according to the following equation:

pH = -log[H+] = -log[H3O+]

This equation can be solved for the concentration of hydronium ions:

[H3O+] = 10-pH

Thus, for a solution with a pH of 3, the concentration of hydronium ions will be 10-3 = 0.001 moles/liter, and for a solution with a pH of 8, the concentration of hydronium ions will be 10-8 = 0.00000001 moles/liter.

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15y ago
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15y ago

pH is defined as the negative logarithm of the Hydronium ion concentration. Therefore, the concentration of Hydronium in a pH 3 solution is found in the following way. -Log(x)=3, x=1*10^-3 M. If you are unfamiliar with the algebra of solving this equation you should review basic log rules. The log rule used to solve this problem is the following. Take the base of the log, 10, and raise it to each side of the equation. so, 10^(log(x))=10^-3 this reduces to x=10^-3.

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12y ago

1/108.7

= 1.99 x 10-9

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Q: How would you Calculate the H3O ion concentration in a solution with pH3 and a solution with pH8?
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Related questions

What formula can you use to calculate the H3O plus?

In an aqueous solution, the concentration of H3O+ is the same as the concentration of H+. If you know the pH of the solution, then that's equal to 10^(-pH).


What is the pH of a naturall solution?

The pH of a neutral solution is 7 and the concentration of H+ or H3O+ in the solution would be 1.0 X 10-7.


What a substance with a higher concentration of H3O ions?

An acidic solution


What happens when the pH is 2?

In the first hand it means it is a fairly strong acid.In a more accurate meaning, the pH is calculated as:-log10 [H3O+]Where [H3O+] means the concentration of hydroxide-ions in the water.So, we know this:-log10 [H3O+] = 2.00So, it is not hard to calculate that the concentration of hydroxide ions is 0,01 g mol-1 .


The ph of lemon juice at 298 k is found to be 2.32 what is the concentration oh H3O plus ions in the solution?

If the PH of lemon juice at 298 k is found to be 2.32, the concentration of H3O plus ions in the solution would be 0.5 M.


What expression represents the pH of a solution?

Concentration of hydrogen ions in the solution


What is the H3O plus concentration in a solution that is 100 times less acidic than one having a pH of 3.22?

The H3O+ concentration in a solution with pH 3.22 = 1x10^-3.22 M or 6.03x10^-4 M.If a solution is 100 times less acidic, then the H3O+ concentration will be 6.03x10^-6 M.Put another way, 100 times less acidic will have a pH of 5.22 and H3O+ = 1x10^-5.22 = 6.03x10^-6M


What is the pH of hydronium?

Depending on its concentration you can calculate it by this formula: pH = -log[H3O+]


What is the difference between an acid and a base and something that is neutral?

The difference between the three is the relative concentration of H3O+ and OH- in the solution.An acid solution has a higher concentration of H3O+ than OH- and its pH is lower than 7.A basic solution has a higher concentration of OH- than H3O+ and its pH is higher than 7.A neutral solution has exactly equal concentration of each one and its pH is exactly 7.


What is the concentration of hydronium and hydroxide ions in molarity in a neutral solution?

The concentration of hydronium (or hydrogen) ions in solution is found by raising to to the negative pH. In this case, we know that the pH is 7 because it is neutral, so we would say...[H3O+] = 10-pH[H3O+] = 10-7[H3O+] = 1.0 x 10-7 mol/LNeutral solutions have equal concentrations of H3O+ and OH-, so the hydroxide concentration is the same as the hydronium concentration: 1.0 x 10-7 mol/L.Hope this helps:)


The following are pH values cola 2 orange juice 3 beer 4 coffee 5 human blood 7.4 Which of these liquids has the highest molar concentration of OH?

The pH is a measure of the concentration of H3O+ in a solution. The lower the pH, the higher the concentration of H3O+. This is because of the way it is defined:pH = - log10 [H3O+]or in other words, the pH is the negative logarithm (in base 10) of the concentration of H3O+.Water, and water-based solutions have a special property: if you multiply the concentration of H3O+ and the concentration of OH-, you always get a constant number, no matter what. Mathematically, that is:[H3O+] * [OH-] = 1 x 10-14This also says the the two concentrations are inverselyproportional. So when one is high, the other has to be low.So, getting back to your question, we know the pH of each solution. From that we know the concentration of H3O+. Again, lower the pH, the higher the concentration of H3O+. And since the concentrations of H3O+ and OH- are inversely proportional, when H3O+ is high, the OH- concentration is low. So which solution has the lowest amount of H3O+? That's the one that has the highest pH, and that will also have the highest concentration of OH-.See the Related Questions for more information about pH, acids and bases.


Which 1.0 M acid solution has the largest concentration of hydronium H3O?

hydro chlroic acid