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April 21, 2014

Search: The hydronium ion (H3O+) concentration of a 0.25 M solution of HCN (Ka = 4.9 × 10−10) is

Number of results: 8,887

Chemistry
this makes absolutley no sense I plug all this into my calculator but I get different results. The hydronium ion concentration can be found from the pH by the reverse of the mathematical operation employed to find the pH. [H3O+] = 10-pH or [H3O+] = antilog (- pH) Example: What...
Friday, March 23, 2007 at 9:33pm by Jon

Chemistry
The pH of a solution is 1. Which of the following statements are also true for the solution? (Select all that apply.) It will change the color of red litmus to blue. The concentration of hydronium ion is equal to the concentration of hydroxide ion. The solution is acidic. It ...
Friday, May 18, 2012 at 12:24pm by Cody

Chemistry
It will change the color of red litmus to blue .No. The concentration of hydronium ion is equal to the concentration of hydroxide ion. It is greater than OH The solution is acidic.yes It will change the color of blue litmus to red. yes The solution is basic. no The ...
Friday, May 18, 2012 at 12:24pm by DrBob222

chemistry
Calculate the hydronium ion concentration and pH in a 0.037 M solution of sodium formate, NaHCO2. hydronium ion concentration i dont understand these
Wednesday, March 6, 2013 at 5:01pm by sara

Chemistry
Hi Dee, this is ez! H3O+ is an hydronium ion, a Lewis acid and OH-, hydroxide ion is a Lewis base. Reaction between hydronium and hydroxide yields water molecules H3O+ + OH- ----> 2H2O This is called a neutralization reaction.
Wednesday, October 9, 2013 at 11:18am by Swaastikaa

chemistry
thanks! also for this question Calculate the hydronium ion concentration and pH in a 0.037 M solution of sodium formate, NaHCO2. hydronium ion concentration I made an equation: k=x^2/.037-x but when i look up the k what compound am i looking for? how do i know?
Thursday, March 7, 2013 at 4:57pm by hannah

chemistry
Calculate the hydronium ion consentration and the hydroxide concentration in blood in which the PH is 7.3. Hydronium = [H3O+] = 10-pH or [H3O+] = antilog (- pH) and I got 1.00 x 10^7.3 for both concentrations is this correct? ABsolutely silly. You did not do the math. PUt this...
Friday, March 23, 2007 at 4:07am by Jon

chemistry
what are the hydronium-ion and the hydroxide ion concentration of a solution at 25 C that is 0.0050 M strontium hydroxide, Sr(OH)2? a solution of hydrochloric acid is 0.20 M HCl. What is the hydronium-ion at 25 C? What is the hydroxide ion concentration at 25 C?
Saturday, August 6, 2011 at 3:55pm by Henry

Chemistry
For the specific heat of ice I looked it up and found it to be 2.05 and the heat fusion to be 334 q1 = 8.5 x 2.05 x 10 = 174.25 q2 = 8.5 x 334 = 2839 q2 = 8.5 x 4.184 x -25 and that gave me a total of 2124 joules...also for my 2nd question from yesterday... Caculate the ...
Thursday, January 17, 2008 at 11:03pm by Mike

chemistry
I think the proper answer is that the H^+ adds to a water molecule to form the hydronium, H3O^+ ion. Thus H3O^+ ions are found but not bare H^+.
Monday, May 7, 2012 at 2:27pm by DrBob222

Chem Help
If the hydronium ion concentration of a aqueous solution at 25 degrees celcius is 5*10^-6 M, what is the hydroxide ion concentration
Friday, July 1, 2011 at 2:01pm by Danielle

Chemistry
The hydronium ion concentration for a solution is determined to be 4.5 x 10^-7 M. What is the concentration of the hydroxide ion? I just wanted to let the people that are being nice enough to help me know that this is for a study guide. It is not a test or quiz. :0) Thanks.
Sunday, November 25, 2012 at 3:37pm by Amber

Chemistry
Recall that all aqueoous solutions contain_"solute ions, H^+ ions/OH^- ions/whatever"____. Water can also undergo ___"ionization"_. This process is called the __"autoionization"____of water. The reaction can be written as: "2H2O <==> H3O^+ + OH^-" Notice the double arrow...
Thursday, March 7, 2013 at 9:53pm by DrBob222

Chemistry
The net reaction is between hydronium, H3O+, ions and the metal, producing metal anions and hydrogen gas. A strong acid solution has a higher concentration of hydronium ions that a week acid. The rate is higher when the concentration of any one of the reactants is higher.
Wednesday, April 15, 2009 at 8:44pm by GK

Chemistry
Show that the hydroxide-ion concentration in an aqueous solution is 1x10-4 M when the hydronium-ion concentration is 1x10-10 M.
Tuesday, May 10, 2011 at 3:43pm by Cami

chemistry
A student prepared a .10M solution of acidic acid. Acidic acid has a Ka of 1.75 x 10-3. What are the hydronium ion concentration and the PH of the solution? I think the PH is 1.76 because I hit -log(1.75 x 10-3) on my calculator and thats what I got thanks in advance for your ...
Wednesday, March 21, 2007 at 6:28pm by Jodi

Chemistry
1)How many joules are needed to heat 8.50 grams of ice from -10.0 degrees to 25.0 degrees? 2)Calculate the hydronium ion concentration and the hydroxide ion concentration in blood, the pH of which is 7.3(slightly alkaline)
Thursday, January 17, 2008 at 3:40am by Mike

chemistry
pH = 3.89 calculate concentration of hydronium ion and hydroxide ion in solution.
Friday, July 26, 2013 at 10:57am by shana

Gen cmehistry
Calculate the hydroxide ion concentration in an aqueous solution that contains 3.50 x 10-3 M in hydronium ion.
Wednesday, April 21, 2010 at 2:45pm by asasas

Chemistry
A solution has a hydroxide-ion concentration of 7.48X10-5 M. What is it's hydronium-ion centration? I have no idea where to begin on this question...
Monday, February 18, 2013 at 1:03pm by Robby

Chemistry
An Arrhenius acid is one that releases(provides) H^+ when placed in solution. H2PO4^- ==> H^+ + HPO4^2- I see some sites where the definition has been modernized to include H2O like this H2PO4^- + H2O ==> H3O^+ HPO4^2- however then one must explain that the hydronium ion...
Sunday, April 21, 2013 at 5:09pm by DrBob222

Chemistry
1. HCl is highly dissociated since it is a strong acid. It produces a high concentration of hydrogen ions, H+(aq) in a water solution which are the same as hydronium ions, H3O+. Acetic acid, HC2H3O2, is made of molecules that do not dissociate. Its concentration of hydrogen (...
Wednesday, April 15, 2009 at 8:44pm by GK

chemistry
15029 What is the hydronium ion (aka H+) concentration for a solution that is 2.50 x 10-4M in hydroxide. what do i do here? The product of hydroxide and hydronium is a constant, at 25C, it is 1*10^-7
Tuesday, May 1, 2007 at 12:50am by sam

chemistry
The definition of pH is: pH=-log[H3O+] An equivalent statement is: [H3O+] = 10^-pH The hydronium concentration is the antilog of the (-pH) For this example, [H3O+] = 10^-10.5 = ?? The definition acid, basic, and neutral pH's should be something you can look up in your textbook...
Tuesday, July 14, 2009 at 7:10pm by GK

Chemistry
If aqueous hydrofluoric acid is reacted with sodium hydroxide, which of the following substances are in the net ionic equation? 1. fluoride ion, hydronium ion, and water 2. fluoride ion, hydroxide ion, hydronium ion, and water 3. hydrofluoric acid, sodium ion, hydroxide ion, ...
Saturday, October 16, 2010 at 5:12pm by Elva

CHEMISTRY
Do you know the definition of an Arrhenius acid? The modified definition is: An acid is a substance that produces H^+ when in water solution and more modern forms suggest replacing H^+ with H3O^+ (hydrogen ion with hydronium ion). So H2S + H2O ==> H3O^+ + S^-2 so H2S is an ...
Sunday, March 14, 2010 at 8:30pm by DrBob222

Chemistry
What is the only positive ion found in H2SO4(aq)? a. ammonium ion b. hydronium ion c. hydroxide ion d. sulfate ion The answer's b, but I don't understand why.
Saturday, November 20, 2010 at 7:23pm by danny123

chemistry
1.Does a pH of 8.6 describe a solution with a higher or lower hydronium ion concentration compared to a neutral solution? Is such as solution called acidic or basic? 2. Compared to a neutral solution, would you expect an acidic solution to have a higher or lower pH and a ...
Thursday, May 2, 2013 at 7:43am by alex

ap
If aqueous hydrofluoric acid is reacted with sodium hydroxide, which of the following sub- stances are in the net ionic equation? 1. fluoride ion, hydronium ion, and water 2. hydrofluoric acid, sodium ion, hydroxide ion, and fluoride ion 3. hydrofluoric acid, hydroxide ion, ...
Monday, October 1, 2012 at 8:23pm by cheri

Chemistry
Calculate the concentration of the hydronium ion([H3Ol+]) for a solution with the pH = 4.5
Sunday, March 25, 2012 at 12:27pm by Lisa

chemistery
in a solution of pH of 3.26, the molar concentration of the hydronium ion is ?
Sunday, December 9, 2012 at 7:08pm by ogb

Analytical Chemistry
The question: The pH of a solution is defined as pH = -log[H3O+]. If the pH of a solution is 3.72(+/- 0.03), what is the [H3O+] and its absolute standard deviation? Answer: How would I carry this out? I know to find the hydronium concentration wouldn't i just take e^3.72? How ...
Monday, January 28, 2013 at 10:16pm by James

Chemistry
What is the pH of a solution that has a concentration of hydronium ions that is 4.7 10-4 molar H3O+? Show, or explain, the work used to solve this problem.
Monday, June 13, 2011 at 10:49am by Johnny

Chemistry
What is the pH of a solution that has a concentration of hydronium ions that is 1.8 10-4 molar H3O+? Show, or explain, the work used to solve this problem.
Tuesday, April 15, 2014 at 5:49pm by Shanetra

Chemistry help please
What is the pH of a solution whose hydronium ion concentration is 0.0010 M?
Monday, March 26, 2012 at 1:44pm by Mary

Chemistry help please
What is the pH of a solution whose hydronium ion concentration is 0.0010 M?
Monday, March 26, 2012 at 1:44pm by Mary

Gen chemistry
What is the hydronium ion concentration of an acid rain sample that has a pH of 3.45?
Tuesday, April 20, 2010 at 3:44pm by asasa

Chemistry I
Determine the hydronium ion concentration in a solution that is 0.00018 M Ca(OH)2. Answer in units of M
Monday, March 11, 2013 at 2:40pm by Ashleigh

Chemistry
What is the hydronium ion concentration in a solution 0.150M in HNO2 and 0.300M in NaNO2? Ka = 7.24E-4
Sunday, April 14, 2013 at 2:32pm by Alexis

Chemistry help
2.00g of NaOH are dissolved in water to make 2.00L of solution. What is the concentration of hydronium ions, [H3O+], in this solution?
Monday, July 29, 2013 at 7:36pm by Anonymous

chemistry
A 0.942 M sample of carbonic acid, H2CO3, has a measured hydronium ion concentration of 6.36 104 M. Calculate the acid-ionization constant of carbonic acid. The equilibrium equation is: H2CO3(aq) + H2O(l) <--><--> H3O+(aq) + HCO-3(aq)
Monday, August 9, 2010 at 5:54pm by Lily

college chemistry
2.00g of NaOH are dissolved in water to make 5.00L of solution. What is the concentration of hydronium ions, [H3O+], in this solution?
Sunday, January 24, 2010 at 9:23pm by Anonymous

Chemistry
A 0.10 M solution of a weak monoprotic acid has a hydronium-ion concentration of 5.0 10^-4 M. What is the equilibrium constant, Ka, for this acid? a. 5.0 10^-2 b. 5.0 10^-3 c. 2.5 10^-4 d. 2.5 10^-5 e. 2.5 10^-6 2. (Points: 1) What is the carbonate-ion, CO3^-2, ...
Thursday, May 13, 2010 at 7:34am by write2khin

Chemistry
0.10 M solution of a weak monoprotic acid has a hydronium-ion concentration of 5.0 * 10^-4 M. What is the equilibrium constant, Ka, for this acid? a. 5.0 *10^-2 b. 5.0 * 10^-3 c. 2.5 * 10^-4 d. 2.5 * 10^-5 e. 2.5 * 10^-6 2. (Points: 1) What is the carbonate-ion, CO3^-2, ...
Thursday, May 13, 2010 at 5:26pm by wite2khin

chemistry
Tell me what your problem is with these questions. #1 is simply adding the atomic masses from the periodic table. #2 is knowing the Bronsted-Lowry theory of acids/bases. By the way, you omitted the + sign from the hydronium ion, H3O^+.
Monday, August 22, 2011 at 9:28pm by DrBob222

Chemistry
If aqueous hydrofluoric acid is reacted with sodium hydroxide, which of the following substances are in the net ionic equation? 1. hydrofluoric acid, hydroxide ion, hydronium ion, fluoride ion, and water 2. hydrofluoric acid, sodium ion, hydroxide ion, ...
Sunday, September 22, 2013 at 3:19pm by Adam

Chemistry
What is the molar hydronium ion concentration in solutions with pH values of a) 3.45 and b) 10.290. How do you work these problems?
Thursday, May 6, 2010 at 6:42pm by Melody

Chem
what is the hydronium-ion concentration at equilibrium in a 0.71 M solution of aniline (Kb=4.2x10^-10) at 25 Celsius
Tuesday, March 19, 2013 at 9:10pm by Che

chemistry
calculate the hydronium ion concentration in 0.125M formic acid, HCHO2 Ka= 1.8 x 10-4 can you show me the steps pls
Friday, November 11, 2011 at 7:42pm by Monique

Chemistry
What happens to the hydroxide ion concentration in aqueous solutions when we increase the hydrogen ion concentration by adding an acid? Would it be good enough to answer by stating that the OH- ion concentration decreases, lowering the pH?
Tuesday, October 18, 2011 at 12:20am by Kevin

CHEM
A concentrated weak acid is best described as which of the following? (a) a solution with a high pH (b) a solution where the concentration of undissociated acid particles is high and relative quantity of hydronium ions is low (c) a solution where the concentration of ...
Friday, July 24, 2009 at 2:35am by Lena

Chemistry
If the acid donates a H^+ to H2O forming a hydronium ion, that carries a + charge (and leaves a negative remnant); e.g. HCl + H2O ==> H3O^+ + Cl^- If the base accepts a H^+ from water, that forms a positive ion with the base and leaves the OH^- as the negative remnant; e.g...
Wednesday, October 17, 2012 at 10:55pm by DrBob222

Chemistry
I just tried that and it told me the answer was incorrect. It gave a hint saying In acidic solution, use the reaction given for the solvation of CaCO3 in acidic solution. Construct a concentration table that allows for the calculation of final concentration as if the reaction ...
Monday, March 11, 2013 at 11:05pm by Andrew

Chemistry 20
Each of the following solutions has a concentration of 0.1 mol/L. Compare the hydronium-ion concentration and pH in each pair, and explain why they are different. a) H2SO4(aq) vs. H2SO3(aq) b) H2S(aq) vs. NH3(aq)
Tuesday, November 23, 2010 at 9:20pm by Anonymous

Chem 20
Each of the following solutions has a concentration of 0.1 mol/L. Compare the hydronium ion concentration and pH in each pair and explain why they are different. a) H2SO4(aq) vs. H2SO3(aq) b) H2S(aq) vs. NH3(aq)
Friday, December 10, 2010 at 8:55pm by Anonymous

Chemistry
My final exam is coming up so I am doing study guides to help me practice. I would really appreciate any help that is given. 1. The hydronium ion concentration for a solution is determined to be 4.5 x 10^-7 M. What is the concentration of the hydroxide ion? 2. When a 5.00 mL ...
Sunday, November 25, 2012 at 10:25pm by Studying

Chemistry
what is the hydronium ion concentration in a 0.55 M HNO3 solution ? what is the pH of this solution? Thank You!!!
Wednesday, May 1, 2013 at 9:59pm by David

Chemistry
what is the hydronium ion concentration in a 0.55 M HNO3 solution ? what is the pH of this solution? Thank You!!!
Wednesday, May 1, 2013 at 9:59pm by David

Chemistry
The hydronium ion concentration in coffee is 1 x 10^-5 M. What is the pH of coffee?
Sunday, November 25, 2012 at 3:51pm by Amber

chem
What relationship exists between H^+ ion concentration and OH^- ion concentration? Waht is the OH^- concentration of an aqueous solution with the H^+ concentration of 10^-4M. Calculate the pOH? Need help with this pls. thank you.
Wednesday, November 28, 2012 at 9:13am by chemdummy

Chemistry
A solution with pH = 4 has 1. relatively high concentration of OH- 2. relatively low concentration of H3O+ 3. relatively high concentration of H3O+ 4. zero concentration of OH- Some of the answers people are giving me are confusing. I just need to know if it 1,2,3 or 4?
Saturday, October 22, 2011 at 7:26pm by nan

Chemistry
what is the hydronium-ion concentration in a 0.35m solution of NaCO3? For carbonic acid, Ka1=4.2x10^-7 and Ka2=4.8x10^-11. (Kw=1.0x10^-14)
Friday, March 22, 2013 at 2:45pm by Sara

Chemistry
Show that the pH of a solution is -0.301 when its hydronium-ion concentration equals 2 M. Is the solution acidic or basic?
Tuesday, May 10, 2011 at 3:48pm by Rachael

chemistry
calculate the hydronium ion concentration in an aqueous solution that contains 2.50x10^-6M in hydroxide solution
Thursday, December 1, 2011 at 7:35pm by brittney

chemistry (acid-ionization constant)
A 0.942 M sample of carbonic acid, H2CO3, has a measured hydronium ion concentration of 6.36 104 M. Calculate the acid-ionization constant of carbonic acid. The equilibrium equation is: H2CO3(aq) + H2O(l) <--><--> H3O+(aq) + HCO-3(aq)
Monday, August 9, 2010 at 7:21pm by Lily

chemistry
The H3o+ concentration of a solution is found to e 3.40*10^-6. What is the pH of the solution? what is the H3O+ concentration? what is the OH- concentration? is this and acidor a base?
Thursday, June 6, 2013 at 11:42am by Miranda

Chemistry
What is the hydroxide ion concentration in a solution with [H3O-] = 7.67 x 10^-9M
Thursday, March 11, 2010 at 12:23am by Anonymous

Chemistry
What is the hydronium ion concentration of a buffer solution that is 0.10M NaHPO4 and 0.50M NaH2PO4? For H3PO4,Ka1=6.9x10^-3, Ka2=6.2x10^-8, Ka3=4.8x10^-13
Friday, March 22, 2013 at 11:58pm by Viv

10th grade Chemistry
What is the hydroxide ion concentration in a solution with [H3O+] = 7.67*10^-9 M?
Wednesday, December 8, 2010 at 7:25pm by gab

chemistry
Henry. Hydronium is the positive ion, shortened to H+ in your book. Hydroxide is the OH- ions. because [H+][OH-] in water solutions is Kw (above), if you know one, you can solve the other. { [] means concentration in molarity) Here, it is given that Sr(OH)2 concentration is ....
Saturday, August 6, 2011 at 3:55pm by bobpursley

Chemistry
Which of the following contains the highest H3O+ ion concentration? Explain your answer. HCl 0.1 M HCH3CO2 0.1 M
Sunday, May 13, 2012 at 9:32pm by Andrea

science
You add 12.5 mL of 4.15 acetic acid to 25.0 mL of 1.00 M NaOH. Calculate the hydronium ion concentration and pH of the resulting solution.
Monday, March 7, 2011 at 5:45pm by Bill

Chemistry
There are other ways to do it but basically, a hydronium ion is a hydrated hydrogen ion and a hydronium ion can be formed by hydrating a concentrated acid if it's the right acid. For example, H2SO4, if you have the 98-99% stuff, easily hydrates. Concentrated HCl, on the other ...
Sunday, March 22, 2009 at 5:41pm by DrBob222

College chemistry
The pH of blood is 7.4 and that of saliva is 6.4. what is the difference in pH between these two solutions? How much more Hydronium ion (H3O+) is in the saliva than in the blood. I need a detailed answer with the formulas if you can. I have a hard time with chemestry
Tuesday, April 30, 2013 at 3:38pm by Liz

AP Chemistry
........HZ + H2O ==> H3O^+ + Z^- I......0.78M.........0........0 C........-x..........x........x E.....0.78-x.........x........x Ka = (H3O^+)(Z^-)/(HZ) Use Ka, plug in E line of ionization above and solve for x = (H3O^+). Then pH = -log(H^3O^+) %ion = [(H3O^+)/0.78]*100...
Friday, January 24, 2014 at 6:21pm by DrBob222

Chemistry
HA + H2O---> H3O+ + A- Ka=[H3O+][A-]/[HA] ..........HA I H3O+ I A- I.........I 0.1 M I 0 I 0 I C........I-2(0.1*0.025) I (0.1*0.025)I (0.1*0.025) I E.........I 0.1-2(0.1*0.025) I (0.1*0.025) I (0.1*0.025) Ka=[(0.1*0.025][(0.1*0.025]/[0.1-2(0.1*0.025] pka=-log(ka) ****This ...
Saturday, March 16, 2013 at 3:20pm by Devron

--- Chemistry ---
What is the most common chemical method for removing H_30^+ ions in aqueous solution? Write a net ionic equation which describes this method. Add a base. What happens to the H concentration when the OH concentration goes up? We havn't started Acids/Bases yet in class, in fact...
Sunday, December 3, 2006 at 3:30pm by J.M

Chemistry
A solution with pH = 4 has 1. relatively high concentration of OH- 2. relatively low concentration of H3O+ 3. relatively high concentration of H3O+ 4. zero concentration of OH-
Saturday, October 22, 2011 at 7:03pm by nan

chemistry
Which factors below affect the rate of a chemical reaction? -Collision frequency -Number of collisions having the least activation energy -Intermolecular orientation -Being Exothermic or Endothermic Also, what formula would I use for this problem: "What is the hydroxide ion ...
Sunday, April 29, 2007 at 2:24pm by anonymous

Chemistry
What is the hydronium ion concentration in a 0.010M solution of carbonic acid, H2CO3? For carbonic acid, Ka1=4.2x10^-7 and Ka2=4.8x10^-11.
Tuesday, March 19, 2013 at 8:00pm by C

Chemistry
What is meant by the hyrdration of the hydrogen ion? Does this mean you add water? Does this mean you create hydronium ions? Are hydronium ions only created when you hydrate a concentrated acid?
Sunday, March 22, 2009 at 5:41pm by Michelle

Chem
A 7.00 mL sample of blood serum has a pH of 7.38 a. What is the concentration of H3O+? b. What is the concentration of OH-? c. How many moles of H3O+ are present? I have no clue what to do and I don't have a calculator with me someone help me I would really appreciate it.
Wednesday, March 19, 2014 at 5:07pm by Johnny

Chemistry Acid/bases
The concentration of H2SO4 in a solution is 3.20 10-6 M. Assume the acid dissociates completely in solution. What is the [H3O+] in the solution? What is the [OH-] in the solution? What is the pH of the solution? What is the pOH of the solution? OK SO I KNOW HOW TO DO THESE ...
Tuesday, February 10, 2009 at 8:11pm by Spencer

chemistry
oxalic acid, h2c2o4, is a weak acid capable of providing two H3O+ ions. ka=.059 k2=6.4E-5 the [h3o]+ in a .38 M solution of h2c2o4 is .12M and can be calculated by the first ionization step only. what is the equilibrium concentration of the oxalate ion c2o4^-2, in the .38 M ...
Saturday, December 4, 2010 at 11:29pm by anonymous

chemistry
They are actually found in aqueous solutions, though they are not always written down because they form naturally. In reactions in acidic and basic equations, they are written down. The presence of hydrogen ions are actually measured by pH. They are found with hydronium ion = ...
Monday, May 7, 2012 at 2:27pm by elizabeth

CHEM
If it is a concentrated solution of a weak acid the equilibrium will be on the side of the undissociated acid. So: the concentration of the undissociated acid will be high the concentration of the dissociated acid will be low the concentration of the dissociated H+ will be low...
Friday, July 24, 2009 at 2:35am by Dr Russ

chemistry
7). The pH of a solution is 2.89. What is the [H3O+]? A) 1.3 X103 M H3O+ B) 1.3 X 1012 M H3O+ C) 7.9 X101 M H3O+ D) 7.9 X 1013 M H3O+ E) 1.9 M H3O+
Monday, November 28, 2011 at 5:53am by denis

chemistry
HCl is a strong acid, it completely ionizes HCl + H2O --> H3O+ + Cl- The concentration of H3O+ = the concentration of HCl.
Wednesday, March 23, 2011 at 9:28pm by Liz

Chemistry
Given the concentration of either hydrogen ion or hydroxide ion, use the ion product constant of water to calculate the concentration of the other ion at 298K A. [H+]= 1.0*10^-4 B. [OH-]=1.3*10^-2 for A do you subtract 1.0*10^-14? and for B do you divide 1.0*10^-14 and 1.3*10^-2
Monday, March 8, 2010 at 9:05pm by Laverne

Chemistry
2. What is pH? A.) the negative logarithm of the hydrogen ion concentration B.) the positive logarithm of the hydrogen ion concentration C.) the negative logarithm of the hydroxide ion concentration D.) the positive logarithm of the hydroxide ion concentration I have no idea ...
Sunday, February 10, 2013 at 7:43pm by Cassie

Chemistry
A student prepared a 0.10 M solutino of acetic acid, CH3COOH. Acetic acid has a Ka of 1.75 x 10^-5. What are the hydronium ion concentration and the pH of the solution?
Friday, January 18, 2008 at 9:04pm by Sue

Chemistry
Calculate the OH - concentration present in water under the following conditions. Enter your answer in scientific notation. A)[H3O+] = 9.4 x 10-10 M B)[H3O+] = 5.5 x 10-3 M C)[H3O+] = 6.2 x 10-12 M
Monday, February 27, 2012 at 12:11pm by Kyle

Chemistry -
If a solution is 0.25 M KOH...how can i figure out the hydronium concentration and hydroxide concentration? i'm confused..because isn't this a salt?
Sunday, May 17, 2009 at 1:24am by Lisa

Chemistry
Calculate the H3O+ concentration and pH of a carbonated beverage that is .10 M in dissolved CO2- (Essentially all of the H3O+ comes from the first stage of dissociation, CO2 + 2H2O = H3O^+ + HCO3-, for which K1 = 4.4 x 10^-7)
Wednesday, November 17, 2010 at 11:21pm by Kate

Chem
Methylaime, CH3NH2. If a 0.100 mol/L solution of methyamine has a pH of 11.80, calculate the ionization constant for the weak base. What is an ionization constant. Is it just K? This is what I did so far: 11.80 = -log (concentration of h3o+) 10^-11.80 = (concentration of h3o...
Thursday, July 23, 2009 at 11:46pm by Lena

Chemistry
the hydronium ion concentration of a 0.050 M solution of a weak acid is 5.9 X 10^-3 M. the acid-dissociation constant is 1.37 X 10^-4 at 25 celsius. what is the pH of this solution? A. 0.077 B. 1.30 C. 2.23 D. 3.86 E. 5.13
Monday, March 18, 2013 at 11:01pm by Chemistry

Honors Chemistry
1. What is the pH of a solution whose [H3O+] is 1 X 10^ -5 M? 2. What is the [H3O+] concentration of a solution with a pH of 9? 3. What is the pH of a solution whose [H3O+] concentration is 3 X 10^-3 M? 4. What is the pH of a solution with a [H3O+] concentration of 1 X 10^ -12...
Friday, April 6, 2012 at 11:18am by Chris

Honors Chemistry
1. What is the pH of a solution whose [H3O+] is 1 X 10^ -5 M? 2. What is the [H3O+] concentration of a solution with a pH of 9? 3. What is the pH of a solution whose [H3O+] concentration is 3 X 10^-3 M? 4. What is the pH of a solution with a [H3O+] concentration of 1 X 10^ -12...
Thursday, April 19, 2012 at 2:58pm by Kelly

Chem
i do not understand this question please will someome help me! 'The ion that makes solutions acidic is... H+ or NH4+ or NO3- or 02- or OH- Most acids contain, or produce, H^+, hydrogen ions. More technically, the hydronium ion.
Sunday, March 25, 2007 at 3:52pm by sam

Physics
I just wanted to clarify anwsers. Question 23. Nucleotides contain phosphate groups bonded to the.. A) C3' or c5' atoms B). C3 or C3' atoms C). N1 or N9 Atoms D). C3 or N9 atoms E). C3 or C5 atoms The anwser that I chosen in A. QUESTION 19. When the hydrogen ion concentration ...
Thursday, October 1, 2009 at 12:30pm by james

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