Calculate the ratio of the concentration of CO3-2 & HCO3- ions needed to achieve buffering at pH= 9.50. The PkA2 of H2CO3 is 10.25.

45,903 results

Chemistry

Calculate the ratio of the concentration of CO3-2 & HCO3- ions needed to achieve buffering at pH= 9.50. The PkA2 of H2CO3 is 10.25.

Chemistry

Complete the charge balance equation for an aqueous solution of H2CO3 that ionizes to HCO3^- and CO3^2- ______ = ______ + _______ + _______ Given choices: [HCO3^-],[CO3^2-], [OH^-], 2[H^+], [H2CO3], 2[CO3^2-], 3[H^+], {H^+] I don't understand how to do charge balance :(

Chemistry

Write out the Ka and Kb for the biocarbonate ion with chemical equation: Would this be correct: HCO3^-(aq) <--> H+(aq) + CO3^-2(aq) Ka = [H+][CO3-2]/[HCO3- H2O + CO3-2(aq) <--> HCO3-(aq) + OH-(aq) Kb = [HCO3-][OH-]/[CO3-2] Or in my textbook there a chart that says...

Chemistry

1.0L of aqueous solution in which [H2CO3]=[HCO3^-]=0.10M and has [H^+]=4.2E-7. What is the concentration of [H^+] ofter 0.005 mole of NaOH has been added? H2CO3 ==> H^+ + HCO3^- k1 = (H^+)(HCO3^-)/(H2CO3) I don't know if you are supposed to calculate or to look up k1. ...

Chem 2

A popular buffer solution consist of carbonate (CO3 2-) and hydrogen carbonate (HCO3-) conjugate acid-base pair. Which, if any of the following such buffers has the highest buffer capacity? A. 0.9M CO3 2- and 0.1M HCO3- B. 0.1M CO3 2- and 0.9M HCO3- C. 0.5M CO3 2- and 0.5M ...

chemistry

A) Calculate the hydrogen-ion concentration of a 5.45*10^-4 M H2CO3, solution, noting that Ka is bigger than Kb. B)What is the concentration of CO3^2-? after finding the concentration to A), do i use that concentration (M) as the initial M for CO3^2-? thanks in advnace

Chemistry

A student needs 1.0L of buffer solution with a PH =10.0 .She selects the HCO3^- >CO3^2- buffer system. The K(HCO3^-) =5.6x10^-11 . what is the [HCO3^-]/[CO3^2-]ratio for the buffer?

chemistry

For 6.0*10^-2 M H2CO3, a weak diprotic acid, calculate the following values. Use ionization constants of H2CO3: Ka1=4.4*10^-7, Ka2=4.7*10^-11, as necessary. PART A: [H3O^+] M PART B: [HCO3^-] M PART C: [CO3^2-] M

Chemistry

Complete the following equilibrium reactions that are pertinent to an aqueous solution of Ag2CO3. Physical states, s, l, g, and aq, are optional. So far I worked it out to be: Ag2CO3(s) <--> 2Ag^+ + CO3^(2-) H2CO3(aq) + H2O(l) <--> H3O^(1+) + (HCO3)^(-) HCO3^(-)(aq...

chemistry

In titration of a 0.10M soln of Na2Co3 with HCL which of the following will be present in the largest concentration at the first equivalence point? a. Co3^2- b. HCO3- c. H+ d. H2CO3 e. OH-

Chemistry (Dr. Bob222)

How can you tell if something is highly concentrated or lowly concentrated? For example: H2CO3, H+, HCO3-, CO3(2- charge), is in order of highest concentration to lowest concentration, can you explain why it is that order? Thanks for your help :)

Chemistry(Please help)

Calculate the pH of an aqueous solution of 0.15 M potassium carbonate. I know that pH = -log(H30+) but I am not sure how to start this problem. Chemistry(Please help) - DrBob222, Saturday, April 14, 2012 at 11:09pm Hydrolyze the CO3^2-. CO3^- + HOH ==> HCO3^- + OH^- Do an ...

Chemistry(Please respond)

Calculate the pH of an aqueous solution of 0.15 M potassium carbonate. I know that pH = -log(H30+) but I am not sure how to start this problem. Chemistry(Please help) - DrBob222, Saturday, April 14, 2012 at 11:09pm Hydrolyze the CO3^2-. CO3^- + HOH ==> HCO3^- + OH^- Do an ...

To TOM

I accidentally erased your post on the hydrolysis of various anions. The answer is Kb(for the anion) = (Kw/Ka for the Ka for the acid) where Ka will be Ka for monoprotic acids, k2 for diprotic acids, or k3 for triprotic acids So to make OH^- the smallest you want Ka to be the ...

chemistry

If 0.1200g of sodium carbonate is dissolved in 50 mL of water and titrated with 0.1000 M HCl, how many mL of HCl will be required to reach the second endpoint? CO3^-2 + H^+1 --> HCO3^-1 HCO3^-1,+ H^+1 --> H2CO3

CHEMISTRY

find the concentrations of H+, HCO3-, CO3 2- in a 0.025M in H2CO3 solutions

chemistry

analysis of a mixture of carbonate and bicarbonate: I did an experiment where 2.306g of unknown was diluted with distilled water to 250ml. Then 3 25mL samples of this unknown were titrated with .0663 M HCl and end point volumes were: 41.12mL, 41.00mL and 40.99mL. Then 3 more ...

Chemistry

Calculate [CO32- ] in a 0.019 M solution of CO2 in water (H2CO3). If all the CO32- in this solution comes from the reaction shown below, what percentage of the H+ ions in the solution is a result of the dissociation of HCO3‾? HCO3‾(aq) H+(aq) + CO32-(aq)

Chem titration ph

What arethe pH, pOH, and concentrations of CO3 2- and HCO3 - after 1.000 mL of 0.1500 M HCl is added to 100.0 mL of 0.0100-M sodium carbonate solution? ignore the added1% volume. CO3^-2 + H^+ ==> HCO3^- Calculate mols carbonate to start. Calculate mols HCl to start. ...

chemistry

When a base is introduced into this buffer, which of H2CO3 and HCO3− reacts with the base to maintain the pH of the solution? HCO3− H2CO3

Chemistry

Use the Bronsted-Lowry definitions to identify the two conjugate acid-base pairs in the following acid-base reaction: HCO3^- + S^2- <-> HS^- + CO3^2- I got it. HCO3^- is the base in the pair with CO3^2-. S^2- is the acid in the pair with HS^-. Would you believe you have ...

Chemistry

Consider the reaction CO3^-2+H2O<==>HCO3^+OH^-. Kb for CO3^-2 is 2.1x10^-4 at 25 Celsius . What is Ka for the HCO3^- ion at 25 Celsius?

Chemistry

1. An aqueous solution contains 0.154 M ascorbic acid (H2C6H6O6) and 0.196 M hydrobromic acid. Calculate the ascorbate (C6H6O62-) ion concentration in this solution. Can you explain how to do this please? thank you. Also if you can is number 2 missing information or am I ...

Chemistry-Repost

Write formula equations and net ionic equations for the hydrolysis of sodium carbonate in water. Responses Chemistry - DrBob222, Friday, April 24, 2009 at 10:50pm The hydrolysis of Na2CO3 ends us as the hydrolysis of the carbonate ion. The molecular formula is Na2CO3 + HOH==...

College Chemistry II

What is the solubility of ZnCO3 at 25C in a buffer solution with a pH of 10.21? ZnCO3 <----> Zn++ + CO3 – - CO3-- + H2O ----> HCO3- + OH- pOH = 14 – 10.21 = 3.79 [OH-] = 1.62x10^-4 M = [CO3--] = [Zn++] Ksp = [Zn++][CO3-] = (1.62x10^-4)( 1.62x10^-4) = 2.63x10^-8 ...

Chemistry

Titration of Na2CO3 with HCl. (pKa1(H2CO3) = 6.352, pKa2(H2CO3) = 10.329) . Calculate the pH at each of the following volumes of 0.20 M HCl added to 20.00 mL of 0.10 M Na2CO3. I figured out everything except for adding 20.00 ml of 0.20M HCL. Please help asap.

chemistry/biochemistry

How can we calculate the HCO3- (bicarbonate ion) concentration in water in 25C pH7.0? I think we can use PV=nRT equation, but I am not sure. If pH is changed from 7.5 to 6.5 ( around pka 6.3 of CO2), how can change the HCO3- concentration? Thanks in advance.

science( chem)

The total Carbon dioxide content (HCO3- + CO2) in a blood sample is determined by acidifiying the sample and measuring the volume of CO2 evolved with a van slyke manometric apparatuses. The total concent was determined to be 28.5 mmol/L. The blood pH at 37o was determined to ...

chemistry

It's hydrogen carbonate, which is HCO3- Should the reactant be H2CO3? How do you balance this reaction?: HCO3 ---> H2O + CO2

Chemistry

When we mix NaOH and H2SO4 we get the equation OH-(aq) + H+(aq) --> H2O(l) and if we mix H2CO3 and NaOH we get the equation 2OH-(aq) + H2CO3 --> 2H2O(l) + CO3-2(aq) Why aren't the two equations the same? ie only one mol of NaOH reacts in the first equation but two mol of...

Chemistry(Please help)

Calculate the concentration of HCO3- in an aqueous solution of 0.0885 M carbonic acid, H2CO3 (aq). I was going to set this up as 0.0885 -x = ? Am I suppose to use the Ka value for carbonic acid?

Chemistry

I'm clueless on this take-home quiz we have. Calculate the concentration of (Co3)2- in a solution made by dissolving 1 mole of Co2 in 1 L of water. The hydration equilibrium constant Kh of Co2 at 25C is 1.70x10-3, Ka1 of H2CO3=2.5x10^-4, and Ka2=5.01x10^-11.

Chemistry

okay so I have this question; Co3^2- is a component of soil and can neutralize acid deposition. Sketch the pH curve for soil containing carbonate ions that undergoes continual addition of hydronium ions from acid deposition. Include relevant chemical equations and information ...

Chemistry -buffers.

The pH of an arterial blood sample is 7.15. upon acidification of 10 ml of the plasma 5.91ml of CO2 is produced at standard temperature and presure. Calculate-a) total CO2 in the specimen b)the individual concentration of disolved CO2(H2CO3) and HCO3- c)The partial pressure of...

chemistry

in what ratio 0.2M NaCl and 0.1M CaCl2 solutions are to be mixed so that in the resulting solution, the concentration of negative ions is 50% greater than the concentration of positive ions?

Chemistry

4) Which of the following is the most effective buffer system for a pH value of 4.45? a. H2CO3/HCO3- (K1 = 4.4 * 10-7) b. HCO3-/CO32- (K2 = 4.7 * 10-11) c. H2S/HS- (K1 = 1.0 * 10-7) d. HC2O4-/C2O42- (K2 = 5.0 * 10-5) e. H3PO4/H2PO4- (K1 = 7.5 * 10-3) I think is D. Because when...

Chemistry

According to the following equation if 3 mol of Fe2(CO3)3 are mixed with 20 mol of H+1: Fe2(CO3)3 +6H+1 ==>2Fe+3 + 3CO2 +3H2O A. all the Fe2(CO3)3 will react. B. all of the H+1 will react. C. 3.3 mol ofFe2(CO3)3 will react. D. 1.6 mol of H+1 will remain unreacted. You need ...

chemistry

when co2 dissolves in water, the following equillibrium is established, CO2 + 2H2O GIVES H3O(+) + HCO3(-) for which the equillibrium constant is 3.8 * 10^-7 and pH is 6. then what is the ratio of concentration HCO3(-) to CO2?

Chemistry

In the experiment shown below, you add some salt to water. A = All of the solid dissolves (no solid at the bottom). B = You add more water and the solid stays dissolved. Select all of the following that are true about solutions A and B. The same number of ions are dissolved in...

Chemistry Help Please!!!

Find Net Ionic equation for hydrolysis , Expression for equilibrium constant (Ka or Kb) and Value of (Ka or Kb) Net Ionic equations I've got NaC2H3O2 == CH3COO^-+H2O -->CH3COOH+OH^- Na2CO3 ==== CO3 + 2H2O → H2CO3 + 2-OH Kb = [H2CO3] [-OH]2 / [CO3]. Kb = 1/Ka1Ka2 = 7....

chemistry

what is the concentration of na and co3 ions in 0.2M aqueous solution of na2co3

Chemistry AP

Calculate the concentration of H3O + present in 0.377 M H2CO3. Answer in units of mol/L I know the Ka of H2CO3 is 4.3E-7. But I don't know what to do from there. (Or, I'm not getting the correct answer at least)

Chemistry

Write a net ionic equation for the overall reaction that occurs when aqueous solutions of potassium hydroxide and carbonic acid are combined. KOH + H2CO3 = KCO3 + H30 K^+(aq) + OH^-(aq) + h2CO3 (aq) = K^+(aq) + CO3^2+(aq) + H3O(aq) Is this correct so far?

chemistry

Calculate the concentration of all species in a 0.130M solution of H2CO3 Enter your answers numerically separated by commas. Express your answer using two significant figures. [H2CO3], [HCO?3], [CO2?3], [H3O+], [OH?] =

chemistry

Water from a city well is analyzed and found to contain 25 mg/L of (HCO3)^- and 35 mg/L of (CO3)2^-. Calculate the alkalinity of the water as CaCO3.

Chemistry

What is the concentration of CO3^-2 in a 0.028M solution of carbonic acid, H2CO3? For carbonic acid, Ka1=4.2x10^-7 and Ka2=4.8x10^-11

chemistry

When surface water dissolves carbon dioxide, carbonic acid (H2CO3) is formed. When the water moves underground through limestone formations, the limestone dissolves and caves are sometimes produced. CaCO3(s) + H2CO3(aq) Ca(HCO3)2(aq) What mass of limestone must have dissolved ...

chemistry

When surface water dissolves carbon dioxide, carbonic acid (H2CO3) is formed. When the water moves underground through limestone formations, the limestone dissolves and caves are sometimes produced. CaCO3(s) + H2CO3(aq) Ca(HCO3)2(aq) What mass of limestone must have dissolved ...

chemistry

When surface water dissolves carbon dioxide, carbonic acid (H2CO3) is formed. When the water moves underground through limestone formations, the limestone dissolves and caves are sometimes produced. CaCO3(s) + H2CO3(aq) Ca(HCO3)2(aq) What mass of limestone must have dissolved ...

science

The concentration of hydroxide ions in the antacid, milk of magnesia, is 5.2x10^-4 M. Calculate the concentration of hydronium ions at 25 degrees celcius.

chemistry

I am trying to calculate the how amount of Tris-bicarbonate should be added in the reaction. I would like to have final volume of bicarbonate 10mM in 2ml reaction. I made Tris-base (1M, 100ml) and instead of HCl, CO2 was bubbling to set pH7.5. 0.1L*0.1M= 0.01 moles of Tris...

ionic equations chemistry

Li2CO3+HBr-> I don't know what you want. Li2CO3 + HBr ==> LiBr + H2O + CO2 You will need to balance it Li2Co3+2HBr->H2Co3+2LiBr then you seprate Li(aq)+1 + Co3(aq)+2 + 2H(aq)+1 + 2Br(aq)+1 --> H(aq)+1 + Co3 (aq)+2 + 2Li(aq)+1 + 2Br(aq)+1 then cancel out Co3(aq)+2 ...

Chemistry

Are the reactants or the products favoured in the following reactions? a. CH3COOH with NH3? b. HS- with HCO3-? c. HNO2 with NH3 d. NH4+ with F- e. C6H5COOH with CH3COO- f. H2SO3 with HCO3- g. H2CO3 with SO32- h. H2SO3 with SO32-

General Chemistry

Starting out with 50 mL of 0.20 M NaHCO3, calculate how many mL of 0.50 M NaOH solution to add to make 100 mL of approximately 0.10 M (total) buffer solution with a pH of 10.35. By adding NaOH, some of the NaHCO3 gets converted to the conjugate Na2CO3. This conjugate acid/base...

Microbiology- Biology 205

Can someone please help me with this question.... When you blow bubbles into a glass of water, the following reactions take place: H2O + CO2 --a--> H2CO3 --b--> H+ + HCO3- 1. What type of reaction is a? 2. What does reaction b tell you about the type of molecule H2CO3 is...

Chemistry

human blood contains dissolved carbonc acid in equilibrium with carbon dioxide and water according to the reaction: h2CO3(aq)<-->CO2(aq)+H2O(l) explain why decreasing the concentration of Co2 will ultimately decrease the concentration of H2CO3.

chem

When ionic salt is dissolved in water the ions CO3 and K+ are formed? KCO3 K2CO3 K(CO3)2 K3CO2 I think its the second one but I don't know where the 2 comes from?

chemistry

A 0.942 M sample of carbonic acid, H2CO3, has a measured hydronium ion concentration of 6.36 ´ 10–4 M. Calculate the acid-ionization constant of carbonic acid. The equilibrium equation is: H2CO3(aq) + H2O(l) <--><--> H3O+(aq) + HCO-3(aq)

Chemistry

The solubility of CaCO3 at 25 degrees celsius is 6.90*10-5M. The reaction is CaCO3(s)-->Ca 2+(aq) + CO3 2-(aq) <-- a. Calculate the concentration of Ca +2 and CO3 -2 at equilibrium. b. Calculate the equilibrium constant for the dissolution reaction. (also known as the ...

chemistry

I don't understnad why I got this question worng: The question asks given the following solubilities, calculate the value of the Ksp for the compound: Zinc carbonate, 3.87 x 10^-6 mol/L My answer: AnCO3 -----> Zn + CO3 There exists a 1:1 ratio between Zn and CO3 Ksp = (3.87...

chemistry

the concentration of OH ions in a household ammonia cleaning solution is0.0035M. Calculate the concentration of H ions. would it be pH=-log (.0035)??? or Kc=1/.0035???

Please double check...GK or Dr.Bobb22

Hi, i actually posted this up before..please double check the answers if i got them right have to hand in on Wednesday: The Chemicals are: Baking Soda- NaHC03 Calcium Chloride- CaCl2 Bromothymol Blue - (acid base indicator) _______________________________________ What is: (a) ...

chemistry

If you pass 10.0mL of a 50.0mL solution of [Co(en)2Cl2]Cl that has been reduced with Zn through a cation exchange column, you will obtain a solution that has three H+ ions for every Co3+ ion that was originally present in the sample. These H+ ions are titrated with 0.10-M NaOH...

Chemistry

What is the equilibrium constant for H2CO3(aq)->2H+(aq)+CO3-2(aq)

science(chem) Please check by today

I REALLY REALLY NEED this to be checked by the END OF THE Day since my finals are tomorrow and I need to know if this is the correct way to do this type of question PLEASE TELL ME IF IT IS CORRECT. I AM posting this again since nobody replied to the other one The total Carbon ...

chemistry

Write the balanced net ionic equation for the following reaction and determine the conjugate acid-base pairs. HNO3(aq)+Li2CO3(aq)<--->LiNo3(aq)+LiHCO3(aq) Which component in the net ionic equation is the acid, the base, the conjugate base, and the conjugate acid Thank ...

Chemistry

Determine the concentration of CO32- ions in a 0.18 M H2CO3 solution. Carbonic acid is a diprotic acid whose Ka1 = 4.3 × 10-7 and Ka2 = 5.6 × 10-11.

chemistry

Which is the conjugate base of the bicarbonate ion, HCO3-? CO3 2-

Chemistry

HSO4 + HCO3 -> SO4 + H2CO3 How would I know which are Bronsted-Lowry acids?

Chemistry

Can someone please check if I have written and balanced the reaction properly? 1.In 1774 Joesph Priestley discovered oxygen by decomposing the oxide of mercury. 2HgO = 2 Hg + O2 2. Slaked lime precipitates magnesium ions from hard water. Ca(OH)2 + Mg(HCO3)2 = Ca(HCO3)2 + Mg(OH)2

Chemistry

A cell was constructed with two lead electrodes. The electrolyte compartment is 1 M Pb(NO3)2 (aq). In the other compartment, NaI has been added to a Pb(NO3)2 solution until a yellow precipitate forms and the concentration of I- ions is .5 M. The potential of the cell is .155 V...

chemistry

What is the concentration of the Mg2 ion in solution when [CO3-2] = 0.25M given that the Ksp= 6.82 x 10-6 for the following reaction MgCO3-------->Mg +. CO32- Chemistry - DrBob222, Friday, November 11, 2011 at 5:34pm Ksp = (Mg^2+)(CO3^2-) Substitute 0.25M for CO3^2- and ...

chemistry

When surface water dissolves carbon dioxide, carbonic acid (H2CO3) is formed. When the water moves underground through limestone formations, the limestone dissolves and caves are sometimes produced. CaCO3(s) + H2CO3(aq) Ca(HCO3)2(aq) What mass of limestone must have dissolved ...

chemistry

When surface water dissolves carbon dioxide, carbonic acid (H2CO3) is formed. When the water moves underground through limestone formations, the limestone dissolves and caves are sometimes produced. CaCO3(s) + H2CO3(aq) Ca(HCO3)2(aq) What mass of limestone must have dissolved ...

chemistry

When surface water dissolves carbon dioxide, carbonic acid (H2CO3) is formed. When the water moves underground through limestone formations, the limestone dissolves and caves are sometimes produced. CaCO3(s) + H2CO3(aq) Ca(HCO3)2(aq) What mass of limestone must have dissolved ...

CHEMISTRY

CALCULATE THE CONCENTRATION OF HYDROXONIUM IONS AND NITRITE IONS IN A SOLUTION IN WHICH HNO2 OF 4.5% IONISED

chemistry

To create a 0.1 M carbonate buffer pH = 10.2. You choose to use a combination of HCO3- / CO32-. This buffer system has pKa = 9.9.   a) Calculate how much you need to weigh in each of the sodium salts, NaHCO3 and Na2CO3, to create 1.0 L carbonate (with total concentration of ...

Chemistry 30

Complete the following reactions by moving only one proton at a time. Identify the acid (A) and the base (B) on the left-hand side of the equation, and the conjugate acid (CA) and the conjugate base (CB) on the right-hand side of the equation, according to Bronsted-Lowry ...

science

Calculate the concentration of all species in a 0.145M solution of H2CO3

chemistry

The cell shown above is a concentration cell. Both cells contain a copper solution and have copper electrodes. The only driving force for this cell is the difference in the concentration of the copper solutions. The system will react to equalize the concentration of the ions ...

chemistry

a) calculate the concentration of your unknown (Gatorade) using correct units Note if you did not run the Gatorade use absorbance =0.205 abs units in order to calculate the concentration of the dye in the Gatorade b) calculate of % T for an absorbance of 1.5 using the result. ...

chemistry (acid-ionization constant)

A 0.942 M sample of carbonic acid, H2CO3, has a measured hydronium ion concentration of 6.36 ´ 10–4 M. Calculate the acid-ionization constant of carbonic acid. The equilibrium equation is: H2CO3(aq) + H2O(l) <--><--> H3O+(aq) + HCO-3(aq)

Chemistry

I have 0.009 moles of CaCO3 and I needed to find how many moles of CO3 are in the CaCO3. I am just making sure I am doing this correctly. 0.009 mol CaCO3 x 60.01/100.09= 0.54g CO3 0.54g CO3/ 100.09g CaCO3 = 0.005 mol CO3

Chemistry

Write the mole ratio for Al+3 ion and CO3-2 ion in this equation, 2Al(NO3)3 + 3Na2CO3 = Al2(CO3)3 + 6NaNO3

Chemistry

Cadmium and a solution of cadmium(II) nitrate are used with tin and a solution of tin(II) nitrate to construct a galvanic cell. 1) The reaction run initially at standard state with 100-mL samples of each solution is allowed to proceed until 8.0 g of tin has been deposited on ...

Physics

When the body temperature drops, this has the effect of reducing the potential across the axonal membrane slightly. At a body temperature of 30°C, the potential difference experimentally measured concentration of Na+ ions inside the lipid bilayer is 10^18 NA+ ions/cm^3. a) ...

Chemistry

I have discovered a new chemical compound with the formula A2B. If a saturated solution of A2B has a concentration of 4.35x10-4M. a) What is the concentration of B2- ions? b. What is the concentration of A1+ ions? c. What is the solubility product constant for A2B? Can you ...

Chemistry- acids and bases

Given the following neutralization raction: HCO3^- + OH^- <=> CO2[over]3^- + H2O a. label the conjugate acid-base pairs in this system b. is the forward or reverse reaction favored? Explain. Write net ionic equations that represent the following ractions: a. the ...

chemistry

25.0 cm3 of an acidified solution containing Fe2+ ions was titrated against potassium manganate (VII) solution. 20.0cm3 of 0.050M potassium manganate (VII) was needed. Calculate the concentration of Fe2+ ions in the acidified solution.

College Chemistry

calculate the initial concentration of SCN- ions and Fe3+ ions when a solution was prepared by mixing 3.00mL of 0.00280M KSCN, 6.00 mL of 0.250M Fe(NO3)3 and 16ml of 0.050M HNO3.

Analytical Chemistry

Phosphoric acid is a triprotic acid with the following pKa values: pka1: 2.148 pka2: 7.198 pka3: 12.375 You wish to prepare 1.000 L of a 0.0100 M phosphate buffer at pH 7.45. To do this, you choose to use mix the two salt forms involved in the second ionization, NaH2PO4 and ...

chemistry

75g of FeCL3 are dissolved in 700 mL of solution, what is the concentration of Fe3+ ions? what is the concentration of Cl- ions?

Equilibrium

An aqueous solution of carbonic acid reacts to reach equilibrium as described below. H2CO3(aq) + H2O(l) <---> HCO3^-(aq) + H3O^+(aq) The solution contains the following solute concentrations: Carbonic Acid: 3.3*10^-2 mol/L HCO3^-: 1.19*10^-4 mol/L H3O^+: 1.19*10^-4 mol/L...

Chemistry 2

Can someone please tell me which of the following I have wrong?? I know that one or more is incorrect, but I'm not sure which ones... Match the following Bronsted acids with their conjugate bases. Choices: SO42-, SO32-, CO32-, HPO42-, HPO32-, Cl-, F-, NO3-, NO2-, HSO4-, HSO3...

CHEMISTRY

pH= 7.44 What is the ratio of [H2PO4^-]/[HPO4^2-] What does the pH become if 25% of the hydrogen phosphate ions are converted to the dihydrogen phosphate ion? What does the pH become if 15% of the dihydrogen phosphate ions are converted to hydrogen phisphate ions? Use the ...

chemistry

If you pass 10.0mL of a 50.0mL solution of [Co(en)2Cl2]Cl that has been reduced with Zn through a cation exchange column, you will obtain a solution that has three H+ ions for every Co3+ ion that was originally present in the sample. These H+ ions are titrated with 0.10-M NaOH...

Chemistry

How can i calculate the concentration of each ions remaining in the solution after precipitation is complete? ok heres the full question:: 2KOH + Mg(NO3)2 -------------> 2KNO3 + Mg(OH)2 a 100.0 mL aliquot of 0.200 M aqueous potassium hydroxide is mixed with 100.0mL of 0....

chemistry

How can i calculate the concentration of each ions remaining in the solution after precipitation is complete? ok heres the full question:: 2KOH + Mg(NO3)2 -------------> 2KNO3 + Mg(OH)2 a 100.0 mL aliquot of 0.200 M aqueous potassium hydroxide is mixed with 100.0mL of 0....

chemistry

How can i calculate the concentration of each ions remaining in the solution after precipitation is complete? ok heres the full question:: 2KOH + Mg(NO3)2 -------------> 2KNO3 + Mg(OH)2 a 100.0 mL aliquot of 0.200 M aqueous potassium hydroxide is mixed with 100.0mL of 0....

Chemistry

How can i calculate the concentration of each ions remaining in the solution after precipitation is complete? ok heres the full question:: 2KOH + Mg(NO3)2 -------------> 2KNO3 + Mg(OH)2 a 100.0 mL aliquot of 0.200 M aqueous potassium hydroxide is mixed with 100.0mL of 0....

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