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November 29, 2014

Search: Chlorous acid, HClO2, has a Ka = 1.1 x 10-2. Determine the pH of a 0.27 M solution of HClO2. 0.28 0.57 1.14 1.26 1.31

Number of results: 35,985

chemistry
What is the percent ionization of 0.025 M chlorous acid, HClO2 solution? Ka HClO2 = 1.1*10^(-2) Answer: 48% What I did: HClO2(aq) + H2O(l) -><- ClO2(aq) + H3O(aq) initial-change-end table results: x^(2)/(.025-x)=1.1*10^(-2) x=1.6*10^(-2) % ionization = (1.1*10^(-2))/(1.6...
July 30, 2011 by % ionization

chemisrty
Rank following acids frommost to least acidic: hydrocyanic acid (HCN) Ka = 6.2 × 10−10 hypoiodous acid (HOI) Ka = 2 × 10−11 chlorous acid (HClO2) Ka = 1.2 × 10−2 acetic acid (CH3COOH) Ka = 1.8 × 10−5 1. HOI > HClO2 > CH3COOH > HCN 2. CH3COOH &...
June 8, 2014 by susan

chemistry
How do you name this acid? HClO2 I found the answer but now I need to know N2F4. chlorous acid dinitrogen tetrafluoride
December 16, 2006 by Carter

AP CHEMISTRY
Calculate the pH at the equivalence point in titrating 0.100 M solutions of each of the following with 0.080 M NaOH. a)hydrobromic acid (HBr) b)chlorous acid (HClO2) c)benzoic acid (C6H5COOH)
February 29, 2012 by DANNY

chem
Calculate the pH at the equivalence point in titrating 0.100 M solutions of each of the following with 0.080 M NaOH. chlorous acid (HClO2) benzoic acid (C6H5COOH)
March 23, 2013 by hannah

chemistry
Which of the following mixtures will result in the formation of a buffer solution when dissolved in 1.00 L of water? i) 0.50 mol HClO2 and 0.25 mol HCl. ii) 0.50 mol HClO2 and 0.25 mol NaOH. iii) 0.50 mol NaClO2 and 0.50 mol HClO2. iv) 0.50 mol NaClO2 and 0.50 mol HCl.
March 7, 2010 by Daniel

Chemistry
A buffer was prepared by dissolving 22.61g of NaCLO2 into 0.100L of 4.00M aqueous HCLO2. Calculate the pH of the original Chlorous acid/chlorite ion buffer. Ka= 1.1 x 10^-2.
December 3, 2012 by May

Chemistry
What is the percent ionization for each of the following acids? a. 0.022 M HClO2 solution of pH= 3.88 Answer obtained: .60% pH = 10^(-3.88) = 1.32 x 10^-4 % ionization= [H+] formed divided by MHA (original acid concent) x 100 = (1.32x10^-4)/0.022 x 100 = .60% b. 0.0027 M HClO2...
April 3, 2011 by Cassie

Chemistry -- Please Help!!
Find the pH of a mixture of .150 M HF(aq) solution and 0.100 M HClO2(aq) HF + H2O <--> F- + H3O+ Ka= 3.5*10^-4 So I will show my attempt below... [HF] [F-] [H3O+] I .150 0 0 C -x +x +x E .15-x x x Ka= [F-][H3O+]/[HF] 3.5*10^-4= x^2/(.150-x) assume x is small so (.150-x...
April 26, 2010 by Erin

12th grade
Which acid is stronger: HClO2 or HClO3? Can you also explain why?
July 27, 2010 by Kat

chemsitry help again please
Write the formula of the conjugate base for acid HClO2 .
November 19, 2013 by chelsea

Chemistry(Please just check, thank you)
1) The approximate pH of a 3.0 X 10^-3 M solution of the strong acid H2SO4 is? I did pH= -log(3.0 X 10^-3) = 2.5 2)If HCLO2 is a stronger acid than HF, which is stronger than HOCL, then the order of strengths of the conjugate bases of these acids is? My answer is CLO2^-^ < ...
March 24, 2012 by Hannah

Chem202 - for DrBob222
Dr. Bob222: There is a problem you answered .100M HClO2 titrated with .080M NaOH I can work the problem many times but I am getting 7.30pH and the answer says 7.38 using quad. I used quad and still get 7.30. I also do know how you go from the neutralization reaction of HClO2...
May 26, 2013 by Steve

chemistry
Rank the following compounds in order of increasing acid strength (1 = weakest, 4 = strongest) HClO HClO3 HClO2 HClO4
November 18, 2007 by mark

Chemistry
which of the following statements are true? a) For an acid H-O-A : the greater the electronegativity of A, the weaker the acid HA b) For an acid H-A : the weaker the H-A bond, the stronger the acid H-A c) HF is a stronger acid than HCl d) HClO4 is a weaker acid than HClO2 e) ...
October 15, 2009 by Anonymous

general chem
Determine the oxidation number for the indicated element in each of the following compounds: (a) Co in LiCoO2, (b) Al in NaAlH4, (c) C in CH3OH (methanol), (d) N in GaN, (e) Cl in HClO2, (f) Cr in BaCrO4.
October 9, 2011 by rob

chemistry
what is a titration of 25 ml of 0.15 M HCLO2 is performed with 0.15 M NaOH. What is the pH of the solution after 25 ml of naOH have been titrated? Ka = 0.011
August 12, 2013 by auriane

Chemistry
Calculate the pH of .100M of HClO2.
March 8, 2010 by Robert

chemistry
find Equimolar ratio of HClO2 & NaOH
December 21, 2011 by shyly

CHEMISTRY
How to calculate the pH of 0.120 M of HClO2? plssss i need the answer asap.
February 9, 2013 by ALANANANANA

Chemistry
Write a balanced net ionic equation (include physical states) for the following reaction: HClO2(aq)+NaOH(aq)=H2O(l)+NaClO2(aq)
July 24, 2013 by Kierra

ap chemistry
Which of I) HCl II) HF III) LiOH IV) HClO2 V) HNO3 are strong acids or strong bases in water?
February 28, 2013 by cheri

chemistry
A buffer is formed by mixing 100 mL of 0.2 M HClO2 and 200 mL of 0.7 M KClO2. What volume of 0.2 M KOH can be added before the buffer capacity is reached?
March 2, 2011 by Bria

chemistry
Given the table of Ka values on the right below, arrange the conjugate bases in order from strongest to weakest. Acid Ka HClO 3.5 e-8 HClO2 1.2 e-2 HCN 6.2 e-10 H2PO4- 6.2 e-8 A. ClO2-, ClO¬-, HPO42-, CN- B. ClO2-, HPO42-, ClO¬-, CN- C. CN-, HPO42-, ClO-, ClO2¬- D. CN-, ClO-, ...
November 29, 2010 by linda

chemistry
If HClO2 is a stronger acid than HF, which is stronger than HOCl, then the order of strengths of the conjugate bases of these acids is ______ < _____ < _____ a) ClO- < F- < ClO2- b) ClO2- < ClO- < F- e) F- < ClO2- < ClO- c) ClO- < ClO2- < F- d) ...
March 17, 2012 by bob

Chemistry
3HClO2(aq) +2Cr3+(aq) + 4H2O(l) -> 3HClO(aq) + (Cr2O7)2–(aq) + 8H+(aq) At pH 0.00, with [Cr2O72–] = 0.80 M, [HClO2] = 0.15 M, and [HClO] = 0.20 M, the cell voltage is found to be 0.15 V. Calculate the concentration of [Cr3+] in the cell Ecell = 0.31 Not sure how to really ...
June 10, 2012 by RZeal

College Chemistry - Science
At room temperature (25°C), 45 mL of a 0.002 M acid solution reacts with 30 mL of a NaOH (aq) solution (pH = 11.95), determine (through calculations) whether the acid is phosphoric acid (H3PO4), acetic acid (CH3COOH), or carbonic acid (H2CO3).
March 2, 2014 by Anonymous

Chemistry- Acids and Buffers
Cyanic Acid is a weak acid HOCN + H2O <--> H3O+ +OCN- ka= 3.5*10^-4 a) if 2.5ml of 0.01 M cyanic acid solution is added to 25.0 ml of a formis acid buffer with ph = 3.70, what is the ratio of [OCN-]/[HOCN] in the resulting solution? b) determine the pH of a 0.500 M ...
April 9, 2012 by Tasneem

TO: DrBob222 science
1. Write the chemical formula for each of the following acids: a.) hydrocyanic acid b.) oxalic acid c.) chlorous acid d.) nitric acid 2. Write the acid name or chemical formula for each of the following: a.) HBr b.) sulfurous acid c.) HClO4 D.) phosphoric acid 3. First ...
March 20, 2014 by Anonymous

Chemistry
Is the structure for chlorous acid H O Cl O or H Cl O ? O I was thinking that both could be correct but I am not 100% sure.
November 9, 2011 by Hannah

Chemistry
Is the structure for chlorous acid H O Cl O or H Cl O ? O I was thinking that both could be correct but I am not 100% sure.
November 9, 2011 by Hannah

chemistry
2- A 0.310 M solution of a weak acid, HX, has a pH of 2.53 a. Find the [H+] and the percent ionization of nitrous acid in this solution. b. Write the equilibrium expression and calculate the value of Ka for the weak acid. c. Calculate the pH of the solution formed by adding 10...
March 25, 2012 by bob

Chemistry
1 g of acid was mixed with 120 ml of distilled water and the solution was filtered into a clean dry beaker. A 25 ml aliquot of this solution was titrated with 0.1120 M NaOH. The pH of the acid was recorded to be 4.42. Calculate the initial concentration of the weak acid and ...
March 25, 2013 by Annie

Algebra
100mL of a solution contains 30 mL of acid; this is called a 30% acid solution because part 30 ---- = ---- = 0.30. whole 100 How many milliliters of acid x would need to be added to the solution to turn it into a 50% solution ? (HInt: Adding acid increases both the volume of ...
October 23, 2013 by Stacey

chemistry
You need to determine the concentration of a sulfuric acid solution by titration with a standard sodium hydroxide solution. You have a 0.1896 M standard solution. You take a 25.00 mL sample of the original acid solution and dilute it to 250.0 mL. You then take a 10.00 mL ...
April 11, 2014 by Steven

Solving Rational Equations
100mL of a solution contains 30 mL of acid; this is called a 30% acid solution because part 30 ---- = ---- = 0.30. whole 100 How many milliliters of acid x would need to be added to the solution to turn it into a 50% solution ? (HInt: Adding acid increases both the volume of ...
October 23, 2013 by Stacey

Algebra
Suppose a 2% acid solution is mixed with a 3% acid solution. Find the percent of acid in each mixture. -a mixture that contains an equal amount of 2% acid solution and 3% acid solution -a mixture that contains 3 times more 2% acid solution than 3% acid solution
December 29, 2011 by Anonymous

Algebra
Suppose a 2% acid solution is mixed with a 3% acid solution. Find the percent of acid in each mixture. -a mixture that contains an equal amount of 2% acid solution and 3% acid solution -a mixture that contains 3 times more 2% acid solution than 3% acid solution
December 30, 2011 by Anonymous

Chemistry
Just two more to check, thanks! 1) The pH of a 1.25 M solution of unknown monoprotic acid is 5.43. Determine the value of Ka for this acid. HX <--> H+ + X-. (I obtain 1.0 x 10^-11) 2) Calculate the pH of a solution which is 0.73 M benzoic acid. Ka = 6.5 x 10-5, HC7H5O2 &...
May 1, 2014 by Amanda

chemisrty
A solid acid is dissolved in enough water to make 200 ml of a solution. 40.0ml of the solution is titrated to a phenolphthalein en point with an NaOH solution. The neutralized solution and the remainder of the acid solution are then mixed and the PH of the resulting solution ...
April 16, 2014 by Aria

Chemistryyy
a) A standard solution of 0.243 M NaOH was used to determine the concentration of a hydrochloric acid solution. If 46.33 mL of NaOH is needed to neutralize 10.00 mL of the acid, what is the molar concentration of the acid? b) A 0.150 M sodium chloride solution is referred to ...
September 12, 2014 by Xaxus

Chemistry
Determine the pH of the following solutions: a) A 250.0 mL solution that contains 0.125 M benzoic acid and 0.147 M sodium benzoate. b) The solution in part (a) after 30.0 mL of 0.510 M hydrochloric acid has been added. a. Ka = 6.3 x 10^-5 pKa = 4.20 pH = pKa+log(base/acid) pH...
July 15, 2014 by Arthur T

chemistry
In standardizing a potassium hydroxide solution, a student finds that 32.60mL of the base solution is needed to titrate 0.5045 grams of KHP to a phenolphthalein end point. In another titration, 26.63mL of this same base solution is needed to titrate 0.2003grams of an unknown ...
March 14, 2014 by Anonymous

Chemistry
Determine whether each of the following salts will form a solution that is acidic, basic, or pH-neutral? Al(ClO4)3-Acid LiCl-Neutral KClO2-BAse C6H5NH3NO2-Acid CH3NH3Br-Acid KCl-Neutral NaClO-Base NH4ClO-Acid Fe(ClO4)3-Acid C2H5NH3NO3-Acid Is this right?
October 23, 2010 by Anonymous

Chemistry
Determine whether each of the following salts will form a solution that is acidic, basic, or pH-neutral? Al(ClO4)3-Acid LiCl-Neutral KClO2-BAse C6H5NH3NO2-Acid CH3NH3Br-Acid KCl-Neutral NaClO-Base NH4ClO-Acid Fe(ClO4)3-Acid C2H5NH3NO3-Acid Is this right?
October 23, 2010 by Anonymous

Chemistry
A) Determine the pH of a 0.98 x 10^-2 mol L solution of hydrocyanic acid (HCN) Ka = 4.0 x 10^-10 B) What is the pH of a 0.243mol L solution of methylamine? (pKb for CH3NH2 = 3.30) C) determine the pH of a buffer solution of Na2CO3 (pkb = 3.68, 0.125 M) and NaHco3 (0.35M)
June 3, 2013 by Jake

Chemistry
Determine how many mL of solution A (acetic acid-indicator solution) must be added to solution B (sodium acetate-indicator solution) to obtain a buffer solution that is equimolar in acetate and acetic acid. Solution A: 10.0 mL 3.0e-4M bromescol green solution 25.0mL 1.60M ...
October 29, 2012 by Jake

Chemistry Lab
A 15.00 mL sample of a weak acid with Ka = 3.52x10-4, was titrated with 0.475 M KOH. The equivalence point was reached after addition of 19.5 mL of KOH with the phenolphthalein indicator. Determine the molar concentration of the original acid solution, then find pH and a % ...
October 30, 2012 by Erin Lee

Chemistry
You have 150 ml of a solution of benzoic acid in water estimated to contain about 5 g of acid. The distribution coefficient of benzoic acid in benzene and water is approx 10. Calculate the amount of acid that would be left in the water solution after three 50 ml extractions ...
November 22, 2010 by Nat

Chemistry
You have 150 ml of a solution of benzoic acid in water estimated to contain about 5 g of acid. The distribution coefficient of benzoic acid in benzene and water is approx 10. Calculate the amount of acid that would be left in the water solution after three 50 ml extractions ...
November 22, 2010 by Nat

Organic Chemistry - Extraction
You have 100 mL of a solution of benzoic acid in water; the amount of benzoic acid in the solution is estimated to be about 0.30 g. The distribution coefficient of benzoic acid in diethyl ether and water is approximately 10. Calculate the amount of acid that would be left in ...
October 3, 2010 by Camille

algebra
Two acid solutions are available to a chemist. One is 10% nitric acid solution, the other is 4% nitric acid solution. How much of each type of solution should be mixed together to form a 600 ml of a 6% nitric acid solution?
September 17, 2014 by Ahna

chemistry
Run # Volume NaOH used (mL) 1 4.1 2 4.3 3 2.8 Concentraion of NaOH: 0.113 M pH of acid: 2.84 the questions are: #moles of NaOH: ? initial acid concentration: ? Determine the Ka and pka of the weak acid: ? So here is what I did: Shaked for several minutes about 1 g of the acid ...
July 15, 2012 by fenerbahce

chemistry
A 125.0 mg sample of an unknown, monoprotic acid was dissolved in 100.0 mL of distilled water and titrated with a 0.050 M solution of NaOH. The pH of the solution was monitored throughout the titration, and the following data were collected. Determine the Ka of the acid. ...
March 11, 2014 by Mohanad

chemistry
A solution is 40% acetic acid by mass. The density of this solution is 1.049 g/mL. Calculate the mass of pure acetic acid in 170 mL of this solution at 20 C. Answer in units of g The density of a solution of sulfuric acid is 1.29 g/cm3 and it is 38.1% acid by mass. What volume...
September 2, 2013 by K

chemistry
Assuming the density of a 5% acetic acid solution is 1.0 g/mL, determine the volume of the acetic acid solution necessary to neutralize 25.0 mL of 0.10 M NaOH. Record this calculation on your report sheet.
June 29, 2010 by love

CHM
Assuming the density of acetic acid solution is 1.0 g/mL, determine the volume of the acetic acid solution necessary to neutralize 25.0 mL of 0.10 M NaOH. Record this calculation on your report sheet
January 25, 2011 by JACK

CHEMISTRY
Assuming the density of a 5% acetic acid solution is 1.0 g/mL,determine the volume of the acetic acid solution necessary toneutralize 25.0 mL of 0.10M NaOH.
August 25, 2010 by Jeffrey

Biochem
You have prepared a 400 mL of a .210 M acetate buffer solution with a pH of 4.44. 1. Determine the concentration of both the acetate and acetic acid in the solution. 2. If you made this solution using solid sodium acetate (MW = 136 g/mol) and liquid acetic acid (17.6 M, ...
September 24, 2013 by Ross

math
A lab needs a 20 liters of a 15% acid solution. The lab only has a 10% acid solution and a 30% acid solution. How much of the 10% acid solution will they need to mix with the 30% solution to obtain 20 liters of a 15% solution?
April 2, 2013 by Anonymous

Chemistry
Tartaric acid has two acidic (ionizable) hydrogens. The acid is often present in wines and precipitates from solution as wine ages. A solution containing an unknown concentration of the acid is titrated with NaOH. It requires 22.62 mL of 0.2000 M NaOH solution of titrate both ...
October 10, 2011 by Destiny

chemistry
assuming the density of a 5% acetic acid solution is 1.0g/ml, determine the volume of the acetic acid solution necessary to neutralize 25.0 ml of 0.10 m NaOH. also record this calculation on your report sheet.
October 22, 2009 by janvi

chemistry
assuming the density of a 5% acetic acid solution is 1.0 g/mL, determine the volume of the acetic acid solution necessary to neutralize 25.0mL of 0.10 M Na)H. Also record this calculation on your Report Sheet.
July 1, 2010 by Thaddeus

Chemistry
A solution container was only label 0.005M. When phenolphthalene was added onto the solution, the color of the solution turned pink. After identifying the type of solution,it was later titrated with sodium carbonate. If the solution was sulphuric acid,determine the (a) [H...
June 26, 2013 by Shane

Chemistry
determine the pH of a solution made by mixing 8 ml of 1.10M acetic acid and 2ml 0.9 M sodium acetate solution. pKa for acetic acid CH3COOH is 4.745. Can someone please explain
June 12, 2011 by Max

algebra
A chemist mixes some 20% acid solution with pure 100% acid to increase the concentration. How much pure acid and acid solution should be mixed to form 100 milliliters of 40% acid solution?
August 12, 2010 by jess

algebra 2
A chemist mixes some 20% acid solution with pure 100% acid to increase the concentration. How much pure acid and acid solution should be mixed to form 100 milliliters of 40% acid solution?
September 3, 2010 by jenny

math
in her chemistry class, Lauren must produce 300ml of an 80% acid solution. Her teacher gives her two concentrations of acid solution, a 50% and a 100%. determine how much of each concentration that she must use.
September 15, 2008 by garrick

chemistry
At 25 degrees Celsius the Ka for a 0.120 mol/L solution of acetic acid (HC2H3O2 ) is 1.8 X 10-5. determine the pH of the acetic acid solution
November 15, 2010 by kneLl

chemistry
a 23.74 mL volume of .0981 M NaOH was used to titrate 25 mL of a weak monoprotic acid solution to the stoichiometric point. determine the molar concentration of the weak acid solution. express in correct sig figs.
March 25, 2013 by Anonymous

Chemistry
Concentrated hydrochloric acid has a purity of 36.0% by mass. The density of the concentrated of the acid is 1.19 g/mL.Determine the molar concentration of this acid..please show me the solution...
July 5, 2014 by Syam

chemistry
You were given 25.00 ml of an acetic acid solution of unknown concentration. You find that it requires 29.60 ml of a 0.1050 M NaOH solution to exaclty neutralize this sample. A) What is the molarity of the acetic acid solution? B) what is the percentage of acetic acid in the ...
October 20, 2011 by Rema

chemistry
Suppose you were asked to determine the exact acetic acid concentration in an acetic acid solution that was about 50% acid?
November 4, 2010 by Myisha

math
60 ml of solution A is mixed with 120 ml of solution B to produce solution C which contains 8% of pure acid. If 80ml of solution A is mixed with 40ml of solution B, a solution D containing 10% of pure acid can be produced. find the percentage of pure acid in solution A?
July 5, 2011 by anjan

CHEMISTRY- PLEASE HELP:)!
Pure lauric acid is melted and the freezing point is determined to be 43 degrees celsius. A solution is made by dissolving .50 grams of paradicholrobenzene into 3.00 grams of lauric acid. Determine the molality of this solution. I got 1.1m. which is right. But then it says the...
April 16, 2008 by Miley

chemistry
a 23.74 ml volume of .0981 M NaOH was used to titrate 25 mL of a weak monoprotic acid solution to the stoichiometric point. determine the molar concentration of the weak acid solution. Express your answer to the correct number of significant figures.
April 1, 2013 by Joann

chemistry
A 0.185 M solution of a monoprotic acid has a percent ionization of 1.55%. Determine the acid ionization constant (Ka) for the acid.
April 24, 2012 by cindy

Math
A chemist needs to mix an 18% acid solution with a 45% acid solution to obtain a 12 liter mixture consisting of 36% acid. How many liters of each acid solutions must be used?
February 17, 2012 by Yakima

Mathematics
A solution is mixed with a 12% acid solution to form a 16% acid solution. How many liters of the 20% acid solution are used to make 10 liters of the 16% acid solution?
February 24, 2010 by Matthew

chemisrty
Q1) A solution of ascorbic acid (C6H8O6, Formula mass = 176 g/mol) is made up by dissolving 80.5 g of ascorbic acid in 210 g of water, and has a density of 1.22 g/mL at 55 oC. Calculate the following: a) the mass percentage of ascorbic acid b) the mole fraction of ascorbic ...
January 16, 2012 by lyan

Algebra
how much pure acid must be added to 15 ounces of an acid solution which is 40% acid in order to produce a solution which is 50% acid?
January 12, 2014 by Anonymous

Chemistry
Why wouldn't HCl be a good acid to use to determine the solubility of a silver precipitate in acid solution?
April 12, 2011 by Nicole

MATH
Solution A is 25% and solution B is 40% acid. How many gallons of each solution must be used in order to create a 50 gallon mixture that is 34% acid? Solution A___ Solution B___
October 12, 2011 by Diane

general, organic and biochemistry
when a solution prepared by dissolving 4.00g of an unknown monoprotic acid in 1.00L of water is titrated with 0.600M NaOH, 38.7mL of the NaOH solution is needed to neutralize the acid. What was the molarity of the acid solution? what is the molecular weight of the unknown acid?
November 23, 2010 by Ksolo

chemistry
the following titration data were collected: a 10 mL portion of a unknown monoprotic acid solution was titrated with 1.12340 M NaOH and required 23.95 mL of the base solution for neutralization. calculate the molarity of the acid solution calculate the molarity of the acid ...
October 25, 2011 by Doss

chemisry
A 0.1 molal solution of a weak monoprotic acid was found to depress the freezing point of water 0.1930C. Determine the Ka of the acid. You can assume 0.1 molal and 0.1 molar are equivalent. 100 ml of a 0.1M solution of the above acid is titrated with 0.1 M NaOH. After an ...
February 12, 2012 by ashley

Algebra
A chemist has one solution that is 80% acid and a second solution that is 30% acid. How many liters of each solution will the chemist need in order to make 50L of a solution that is 62% acid?
May 9, 2014 by Anonymous

chemistry
You weigh a sample of a monoprotic unknown acid and dissolve it in 50.00 mL of distilled water. Exactly half of this solution is titrated with Sodium Hydroxide to the phenolphthalein end point. The pH of the other half of the original solution is measured with a pH meter. The...
July 30, 2013 by faruk

chemistry
a. A 0.1 molal solution of a weak monoprotic acid was found to depress the freezing point of water 0.1930C. Determine the Ka of the acid. You can assume 0.1 molal and 0.1 molar are equivalent. b. 100 ml of a 0.1M solution of the above acid is titrated with 0.1 M NaOH. After an...
February 12, 2012 by billy

Chemistry
What is the pH of the solution created by combining 2.50 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? I believe if my calculations are correct the answer is 1.28 however i do not know how to answer this question because it has a weak acid instead of a strong ...
July 8, 2007 by Jared

Chemistry
An acid HA has Ka = 2.28 x 10^-4. The % ionisation of this acid in a 0.170 M solution of the acid in water is? An acid HA has Ka = 2.28 x 10^-4. The % ionisation of this acid in a 0.170 M solution of the acid in water is closest to a. 2.930 % b. 3.662 % c. 2.564 % d. 0.498 % e...
May 26, 2011 by Cheryl

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.
June 18, 2014 by Veronica

12th grade
A perchloric acid solution is composed of 168.75 g of perchloric acid and 81.25 mL of pure water. What is the percent by mass of the perchloric acid solution? The density of water is 1.000 g/mL. When I did this part I got 67.5% But, I am having trouble with the secind part. ...
October 24, 2010 by Helpplease

Ap Chemistry
A perchloric acid solution is composed of 168.75 g of perchloric acid and 81.25 mL of pure water. What is the percent by mass of the perchloric acid solution? The density of water is 1.000 g/mL. When I did this part I got 67.5% But, I am having trouble with the secind part. ...
October 24, 2010 by Helpplease

chemistry
A. Strong Base 1.) What is the concentration of a solution of KOH for which the pH is 11.89? 2.) What is the pH of a 0.011M solution of Ca(OH)2? B. Weak Acid 1.) The pH of a 0.060M weak monoprotic acid HA is 3.44. Calculate the Ka of the acid. 2.) The pH of 0.100M solution of ...
January 20, 2011 by jaycab

chemistry
You weigh a sample of a monoprotic unknown acid and dissolve it in 50.00 mL of distilled water. Exactly half of this solution is titrated with Sodium Hydroxide to the phenolphthalein end point. The pH of the other half of the original solution is measured with a pH meter. The...
July 30, 2013 by faruk

chemistry
1)A solution has a [OH-] of 5.2 x 10-4. What is the [H3O+] in the solution? 2) A 0.25 M solution of a monoprotic acid, HA, has a pH of 2.54. What is Ka for this acid? The dissociation of HA is: HA + H2O <--> H3O+ + A- (Hint: write the expression for pH) 3 A solution has...
December 9, 2012 by nicki

chemistry
A 1.00M solution of a hypothetical weak acid (HB) has a pH of 2.85. A solution is created using 0.10M of a salt NaB ('B' being the anion of the weak acid HB) and 50.0 ml of 2.0M acid HB (assume no change in volume). What would be the pH of the solution and what would you call ...
July 31, 2011 by Hoot

College Chemistry
You weigh a sample of a monoprotic unknown acid and dissolve it in 50.00 mL of distilled water. Exactly half of this solution is titrated with Sodium Hydroxide to the phenolphthalein end point. The pH of the other half of the original solution is measured with a pH meter. The...
April 9, 2013 by Kim

math
How many gallons of 5% acid solution should be mixed with 20 galllons of a 10% acid solution to obtain an 8% acid solution
June 13, 2012 by Andrea B

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