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May 25, 2015

Search: Calculate the concentration of the HCl solution

Number of results: 39,201

Chemistry
A student was given 100mL of HCL solution in a 250mL beaker and told that the HCL was 0.11M. The student was also given phenolphthalein indicator and 250 ML of 0.1234 M NaOH. The student first filled a buret with NaOH solution. The student then placed an appropriate volume of ...
November 21, 2013 by Lenny

science
6g of impure NaOH was dissolved in 100ml of a solution.0.25molar solution of the base utilize 27.6ml of the solution containing 6g of trioxonitrate(5)acid.calculate (a)molar concentration of acid (b) molar concentration of base (c) mass of the base (d) % purity of the base
January 19, 2013 by chm 101

science
how to prepare 0.100M HCL solution when laboratory grade concentrated by hydrochloric acid has concentration of 37%.what volume of acid is necessary to prepare 500mL of 0.100M of HCL
September 21, 2012 by Qyla

chemistry
Using a pipet, 25 mL of a 0.1205 M HCl solution was placed in a 100 mL volu metric flask and the flask filled to the mark with water. What is the concentration of the new solution?
May 18, 2011 by James

Environmental Chemistry
Calculate the pH when the following volumes of 0.20 M LiOH are added into 50 mL of a 0.1 M HCl solution. Both LiOH and HCl are strong electrolytes. a) 0 mL b) 10 mL c) 24.6 mL d) 25 mL e) 25.6 mL f) 30 mL g) 40 mL
May 8, 2012 by Dauren

chemistry
calculate the equilibrium constant for the reactionas written at 940K. NH4Cl->NH3+HCl delta H= NH4Cl -1779, NH3 -46, HCl -92 delta s= NH4Cl - 682,NH3 192,HCl 187 i dont know how to solve for the equilibrium constant without the concentration of the values???
April 14, 2008 by david

Chemistry
a 25.0mL sample of a 0.100M solution of aqueous trimethylamine is titrated with a 0.125M solution of HCl. Calculate the pH of the solution after 10.0, 20.0, and 30.0 mL of acid have been added; pKb of (ch3)3N=4.19
November 8, 2010 by Amanda

Chemistry
If 1.22 grams of magnesium reacts with 100 ml of 6.02 M HCl solution. How much heat is evolved? Density of the HCl solution is 1.10 g/ml. Assume the specific heat of water 4.184 J/gC is the specific heat of the solution. Mg  +  2 HCl   à  MgCl2  +  H2  
July 17, 2012 by Anonymous

Chemistry: Molarity
4.82 mL of a 0.262 M NaOH solution reacts completly with 4.79 mL of HCl solution according to the balanced chemical reaction shown below: HCl (aq) + NaOH (aq) -> NaCl*aq) + H2O (I) What is the molarity of the HCl solution? 4.82 x (1L/1000 mL) = .00482L 4.79 x (1L/1000 mL...
March 1, 2009 by Bob

science
Hey, holidays is over. Time to get back to work. whats the answer to this one find the concentration of hcl in g hcl/kg Naoh + Hcl---> b +c 2.991 mol 25.00mL Density=0.952g/ml also Hcl=36.46g/mol I got approx 4.58 x 10^3 g/mol of the top of my head
September 1, 2009 by Jim_R

Chemistry
(a) Calculate the molarity of a solution that contains 0.175 mol ZnCl2 in exactly 150 mL of solution. (b) How many moles of HCl are present in 35.0 mL of a 4.50 M solution of nitric acid? (c) How many milliliters of 6.00 MNaOH solution are needed to provide 0.325 mol of NaOH?
October 31, 2011 by Anon

ap chemistry
for the following, mix the equal volumes of one solution from group I with one solution from group II to achieve the indicated pH. calculate the pH of each solution. Group I: .2M NH4Cl, .2M HCl, .2M C6H5NH3Cl, .2M (C2H5)3NHCl Group II: .2M KOI, .2M NaCN, .2M KOCl, .2M NaNO2 a...
February 9, 2012 by hannah

chemistry
how to prepare 0.250l of 0.750 M HCL solution,startin with 2.00 M HCL solution. what volume in liter of 2.00m solution we need?
April 10, 2011 by Anonymous

Chemistry
a 25.0 mL sample of .050 M solution of aqueous trimethylamine is titrated with a .063 M solution of HCl. calculate pH the solution after 10.0 mL, 20.0 mL, 30.0 mL of acid have been added. pKb of (CH3)_3_N= 4.19 at 25 degrees C
November 11, 2012 by Elaine

Chemistry
What is the concentration of a solution made by diluting 95 mL of 6.0 M HCl to a final volume of 750 mL
October 14, 2012 by Tish

chemistry
What is the concentration when 60.0 mL of a 9.00 M HCl solution is diluted to 1.170 liters? and how do you solve this problem?
April 4, 2013 by katie

Chemistry
What will be the concentration of the solution formed when 5.72mL of 8.50M HCl is diluted to 250mL?
December 10, 2013 by Chelsea

chemistry
If 5.0 mL of 0.12 mmol dm-3 MB solution is diluted by adding 20.0 mL of 0.2 mol dm-3 HCl to it, what is the new MB concentration?
April 26, 2015 by Mara

CHemistry Please Help..............LAB
Standardization of the Sodium Thiosulfate Solution Make up a standard solution of potassium iodate by accurately “weighing by difference” about 0.1 g of KIO3 and placing it in your 100 mL volumetric flask. Fill the flask to mark with distilled water. Potassium iodate reacts ...
October 19, 2008 by Sara

chemistry
20.0mls of a bulk solution was transferred to a 100ml volumetric flask and diluted to volume with water. 2.00mls of this solution was then found to have a concentration of 0.15M. What is the concentration of the bulk solution. McVc=MdVd (Mc)(.02L)=.15M(.002L) Mc= .015M ...
June 9, 2009 by Juggernaut

AP Chem
CH3CH2NH2(aq) + H2O(l) <-> CH3CH2NH3+(aq) + OH-(aq) Kb = 5.0e-4 Ethylamine, CH3CH2NH, a weak base reacts with water according to the equation above. A 50.0 mL sample of a ethylamine solution is found to have a pH of the solution 11.60. (a) Write the expression for the ...
April 23, 2013 by Jess

Chemistry
Concentrated sulfuric acid is 18.4 molar and has a density of 1.84 grams per milliliter. After dilution with water to 5.20 molar the solution has a density of 1.38 grams per milliliter. This concentration of H2SO4 is often used in lead storage batteries(like a car battery). 1....
January 9, 2011 by Kevin

chem
a.)How many moles of NaOH are required to prepare 2.00L od 0.380M solution? answer is 0.760 mole of NaOH (mole/l * 2.00L) b.)What will be the molarity of a solution if 3.50 g of KOH are dissolved in water to make 150.0 mL of solution? answer is 0.52 M KOH (gKOH/molar mass KOH=...
November 30, 2012 by Angel Locsin

chemistry
5.0g of magnesium metal reacted with 1000cm3 of 4.5M of HCl solution to produce hydrogen gas. Calculate the amount of HCl left and the number of hydrogen molecules produced
June 25, 2012 by Shaibu Abdulai

chemistry
5.0g of magnesium metal reacted with 1000cm3 of 4.5M of HCl solution to produce hydrogen gas. Calculate the amount of HCl left and the number of hydrogen molecules produced
June 25, 2012 by Shaibu Abdulai

chemistry
Calculate the concentration of iron(III) in 2.0 M of 9 ml HCL and 0.00050 M of 1 ml FeCl3? Please help me :(
October 12, 2014 by sreeja

chemistry
A 150.0-mL sample of Solution A is diluted to a total volume of 423 mL to form Solution B. If the concentration of Solution A was originally 20.0 mg/L, what is the concentration (in mg/L) of Solution B?
September 18, 2011 by alex

Chemistry
How does one calculate the pH of a solution that is only 1.84% ionised? determine the concentration of the H+, which will be in a monoprotic acid, concentration * decimal percent. then determing pH in the normal way.
May 20, 2007 by Fiona

Chemistry
Concentrated sulfuric acid is 18.4 molar and has a density of 1.84 grams per milliliter. After dilution with water to 5.20 molar the solution has a density of 1.38 grams per milliliter. This concentration of H2SO4 is often used in lead storage batteries(like a car battery). 1....
January 13, 2011 by K

Chemistry
a solution is made by combining 10.0 ml of 17.5 M acetic acid with 5.54 g of sodium acetate and diluting to a total volume of 1.50 L. a)calculate the pH of the solution. b) how many grams and milliliters of 14.6 M potassium hydroxide needs to be added so pH=pKa? c)what is the ...
November 29, 2011 by Amanda

Chemistry
A: A student must make a five-fold dilution of a 2.15 M HCl solution. If the student wishes to make 75.0 mL of the diluted solution, what volume of the 2.15 M solution will he need to dilute? B: What is the concentration of the diluted substance?
March 21, 2011 by Anonymous

chemistry
What is the molarity of an HCl solution if 14.0mL HCl solution is titrated with 22.6mL of 0.155 M NaOH solution?
February 9, 2013 by Peter

chemistry
340. mL of hydrochloric acid (HCl) acid is exactly neutralized with 500. mL 0.700 M NaOH solution. What is the concentration of the acid solution?
June 1, 2014 by Anonymous

chem
Describe in detail by words how to prepare 200ml of .150M HCl from a 1.00 M HCl stock solution? Need help with this please? i used C1V1=C2V2 and got volume 2 = 33L or 0.33mL. to prepare the solution i need to weigh 1 gram of HCL (from 1.00M HCl stock solution)lets say i put it...
November 27, 2012 by vince11

Chemistry
Is this answer correct? Calculate the molar concentration of sodium hydroxide solution if 36.00mL of this solution were required to neutralize 25.00 mL of a 0.2000 M solution of hydrochloric acid. .0288M??????
May 25, 2011 by jordan

chemistry
Calculate the molarity of a solution prepared by diluting 200.0 mL of 4.0 M HCl to 500.0 mL of solution a. 1.1 M b. 1.6 M c. 2.7 M d. 10. M
December 11, 2011 by anonymous

college
What is the concentration of a solution of HCL in which a 10.0 mL sample of acid required 50.0 mL of 0.150 M NaOH for neutralization?
April 15, 2010 by Anonymous

chemistry
The concentrated H2SO4 of 155g dissolved in enough amount of water if acidic solution is 2.3L a) what is the mole of H2SO4 b) what is the concentration H2SO4 c) what is the concentration of H+(H3O+) created in the solution d) what is the PH value of solution e) what is the ...
January 12, 2015 by Anonymous

Analytical chemistry
A 24.393 g sample of aqueous waste leaving a fertilizer manufacturer contains ammonia. The sample is diluted with 80.601 g of water. A 12.404 g aliquot of this solution is then titrated with 0.1059 M HCl. It required 31.61 mL of the HCl solution to reach the methyl red ...
April 4, 2013 by Ashley

chemistry
What would be the final concentration of [K+] if we mix 0.234 L of a solution with a concentration of 1.2M K2CO3 with 312.5 mL of a solution with a concentration of 0.32 M K3PO4
April 10, 2014 by John

Chemistry
If a researcher needs 0.50 L of 3.0 M nitrite buffer at pH 3.00, then she knows that the concentration of nitrous acid (conjugate acid) plus the concentration of nitrite anion (conjugate base) must equal 3.0 M. She must then calculate the amount of each that is necessary to ...
April 11, 2011 by Mike

Science
To determine Kf you will need to know the total concentration of Fe3+ and SCN- present in the solution. calculate these concentration and record them in the result.(show your working for one of the example.
September 15, 2014 by Okafor

chemistry
A student dissolved 3.65 g of hydrogen chloride gas,HCL in water to make 1.0dm^3 of solution.Calculate the volume of a 0.1 mol dm^-3 barium hydroxide,Ba(OH)2 solution required to completely neutralise 25.0 cm^3 of the acid solution.(RAM:H,1;CL,35.5)
May 7, 2014 by mandy

Chemistry
Calculate the pH and pOH of a solution prepared by dissolving 0.93 g of HCl in enough water to give 0.40 L of solution.
June 2, 2010 by Jakob

chemistry
Calculate the molarity of a solution made by diluting 0.200 L of 1.00M HCl solution to a volume of 1.00 L
November 12, 2010 by Liza

chemistry
a student mixes 4 reagents together thinking that the solution will neutralize each other . The solution is mixed together are 50 ml of 0.100 M of HCL and 100 ml of 0,200 M of nitric acid 500 ml of 0.0100 M ca hydroxide and 200 ml of 0.100 M rubidium hydroxide . Did the acid ...
September 27, 2014 by mathew

Chemistry
Could someone please help me complete my lab experiment. Antacid Brand: Life Concentration of HCl: 0.1845 M Concentration of NaOH: 0.1482 M Trial 1: 1.Mass of Table: 1.2173g 2.Volume of HCl added: 75.0 mL 3.Milliomoles of HCl added:mmoles ? Help 4.Volume of NaOH used: 17.14 mL...
October 18, 2010 by Akhed

chemistry 32
Calculate the concentration, in molarity, of a solutiion prepared by adding 9 mL of water to 1mL of 0.1 M of HCl
March 10, 2011 by Adrian

Chemistry
How do you find the concentration of an acid if 35.0 mL of 0.20 M NaOH is required to neutralize 45.0 mL of HCL. Do you know how I would calculate this?
December 1, 2012 by Arky

chemistry
Okay so I did this problem, but it seems wrong? I put the answers I got... Determine the pH of the following tiration at each of the points indicated. A 71.7 mL solution of 0.182 M NaOH is titrated with 0.2086 M HCL. 1.) initial pH= is it 7.86 or 8.51? 2.) after addition of 10...
October 9, 2011 by help meeee pleaaseee

Chemistry
Hi, I am trying to figure out how to calculate the average temperature of 2 different chemical solutions based upon the temperatures I measured. The question states: Find the average Ti of HCl & NaOH solutions. The Ti of NaOH solution is: 20.87 C The Ti of HCl solution is: 21....
March 12, 2012 by Jules

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?
August 6, 2011 by Henry

Chemistry
How do you calculate the pH of two acids in a solution? Examlp: a solution is made by adding 50mL acetic acid(Ka=1.76x10-5) to 50mL 1.00x10-3M HCl. What is the Ph of the solution?
November 5, 2012 by Steve

chemisrty
A 21.00 sample of 0.3254M Hcl solution requires 26.09 ml of NaOH solution for complete neutralization. Calculate the volume of NaOH solution in liters, required for the titration.
April 25, 2013 by ashley

Chemistry
A student must make 500 mL of a 1.5 M HCl solution. The student has plenty of water and a stock solution of 6.0 M HCl to use. What volume of the 6.0 M HCl solution must be added to what volume of water to make the desired 500 mL of 1.5 M solution? I don't really know how to ...
March 8, 2009 by Katie

Chemistry
3. How does dissolved CO2 in distilled water affect the accuracy of the determination of a NaOH solution's concentration? The CO2 in the distilled water will create a more acidic solution which will affct the determination of NaOH solution's concentration? How is the term ...
March 11, 2014 by Sandy

Chemistry Help.......
Sulfuric Acid (H2SO4) is a strong acid, which dissociates when dissolved in water according to the following equation: H20SO4(aq)-> 2H+(aq) + SO4 2- (a) A 0.21g sample of sulfuric acid is dissolved completely in sufficiebt water to make 0.25litre of the final solution. ...
March 4, 2007 by Adam

Chemistry- Drbob-help#3
I still need help with #3 I'm not sure how I got 1.14M. I have tried to do the problem over, but I not coming up with my original answer of 1.14M. Somehow I am missing a step. Please show work for the 1.14M Thanks Question#9 reads exactly as written. A student makes a solution...
February 10, 2011 by Paul

Determination of ASA Content of Tablets Lab Report
Not asking for answers necesarily but I would to know how to approach each question Mass of pure acetylsalicylic acid (ASA) : .508 g Dilution Absorbance (a.u.) 2:11 .116 4:11 .259 6:11 .392 8:11 .502 10:11 .548 Mass of tablet : .380 g Absorbance read on the Spec 20 : .314 a.u...
December 5, 2012 by Lena

Chemistry
A solution is prepared by dissolving 15.6 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 10.00 mL sample of this stock is added to 52.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions in the final solution. I know ...
May 4, 2010 by Anonymous

Chemistry
An unbuffered solution contaning 0.000018 M HCl .Calculate PH after adding 1 mL of 0.1 M NaOH to 100 mL of solution.
December 11, 2011 by Ethio

Chem
Estimate the equilibrium constant for the weak base (CH3)2NH, if a 1.59×10-2 M aqueous solution of (CH3)2NH has a pOH 2.58 (make an exact calculation assuming that initial concentration is not equal to the equilibrium concentration). (CH3)2NH + H2O = (CH3)2NH2+ + OH- I know ...
October 22, 2010 by Kyo

Chemistry
so i had to calculate the pH of a 100ml solution of .10M acetic acid (ka=1.8x10(-5) I came out to 2.87. But then, they want the pH if 50ml HCL is added. So i thought...Ka = x2/.15M, therefore the square root of .15M x 1.8x10(-5) = .00164(concentration). So -log(.00164) = 2.78...
October 20, 2011 by Kevin

Pharmacy math
How much dil HCL (10% w/w) HCL specific gravity = 1.045 would be required to prepare 2000ml of a solution containing 0.005 molar HCL? HCL m.w.t = 36.5 Who try to solve for me. Please help The right answer is 34.9ml
July 28, 2012 by Fai

chemistry
A student prepared 5.00 mL of borax solution at 59.2 C. He diluted the solution in a flask and titrated it to an endpoint with 27.05 mL of 0.500 M HCl. What is the saturation concentration of borate ions? This is a question in relation to a lab we did of gibbs free energy-...
November 26, 2010 by Anonymous

Chemistry
What is the concentration of a solution prepared by diluting 25.0 mL of HCL 0.750 mol/L to a final volume of 500.mL?
April 30, 2008 by April

Chemistry
What is the concentration of a solution prepared by diluting 25.0 mL of HCl 0.750 mol/L to a final volume of 500. mL?
May 2, 2008 by Kate

Chemistry
a solution of 25 ml of HCL is neutralized by 42.5 ml of 0.10 M concentration of NaOH.Need to write a balanced equation for the reaction
March 10, 2015 by Noah

chemistry
1) To prepare a 200 mL of aqueous stock solution X, you transferred 50 mL of a known concentration solution into a 200 mL volumetric flask. If you realize that the volumetric flask was contaminated with water droplets after you cleanly transferred the known concentration ...
January 12, 2009 by Brad

Chemistry 1
Sodium carbonate reacts with a solution of HCl solution with the evolution of gas (CO2) to yield a solution that is neutral. If 0.265 grams of sodium carbonate are required to neutralize 1.00 mL of HCl solution, what mass (in grams) of sodium carbonate will be required to ...
February 5, 2010 by Kay

chemistry
Hey, I am having a real hard time getting the answers to the problems. Any help would be greatly aprreciated! 1. When 11 mL of a solution containing 2.9 M AlBr3 is diluted to 33 mL, a dilute solution is formed. What is the Br- concentration in 25 mL of the dilute solution? 2. ...
November 7, 2007 by chelsea

chemistry
How many milliliters of a 0.250 M acetic acid solution must be added to 50.0 mL of a 0.750 M NaOH solution to produce a buffer solution with pH = 4.500 ? The pH is given by which we can calculate the concentration of [H+] How do we approach the problem from there?
April 22, 2015 by Anon

Chemistry
Preparing solutions a. A solution was prepared by dissolving 5.65 g potassium bromide in 32.67 g water. What is the concentration of this solution in weight percent? b. The solution was poured into a 100 mL volumetric flask and water was added to the mark on the flask. What is...
May 19, 2011 by Shell

Chemistry
A solution is prepared by adding 50ml of .05 M HCl to 150 ml of .10 M HNO3. Calculate the concentrations of all species in this solution.
February 27, 2012 by Help

science
A solution is prepared by mixing 90 ml of 5 M HCl and 30 ml of 8 M HNO3. Water is then added until the final volume is 1 L. Calculate the [H+], [OH-], and the pH for this solution.
February 17, 2015 by polly

chemistry
An aqueous solution of phosphoric acid, H3PO4, contains 285 g H3PO4 in 400 mL solution, and has a density of 1.35 g/mL. Calculate a. the weight % H3PO4 in this solution. b. the concentration in mol/L of this solution
November 10, 2010 by princess

Math
What volume, in ml, of a 60% of HCl acid solution must be added to 100 ml of a 30% HCl solution to make a 36% HCl solution. We need 2 alegabreic (?) equations. The first I can get is: 0.36x - 0.60y = 100ml (this is probably wrong)? Blah. I can't get the other one. -.- VolHCL*....
January 31, 2007 by Ariel

Chemistry
One mole of each of the following compounds is added to water in separate flasks to make 1.0 L of solution. Which solution has the largest total ion concentration? a. aluminum hydroxide b. silver chloride c. sodium chloride d. calcium carbonate e. potassium phosphate I just ...
May 9, 2011 by Sam

Chem
calculate pH of the buffer solution prepared by mixing 10 mL of 1.5 M HCl with 100 mL of 0.1 M K2CO3 solution. For H2CO3: Ka1= 4.46 e^-7, Ka2= 4.69e^-11
November 12, 2008 by Sam

chemistry
Calculate the molarity if a Ba(OH)2 solution if a 37.25ml portion of this solution is neutralized by 45.00mL of 1.500M HCl. You will need the balanced reaction
March 14, 2014 by Anonymous

AP Chemistry
(a) What is the pH of a 2.0 molar solution of acetic acid. Ka of acetic acid = 1.8 x 10¯5 (b) A buffer solution is prepared by adding 0.10 liter of 2.0 molar acetic acid solution to 0.1 liter of a 1.0 molar sodium hydroxide solution. Compute the hydrogen ion concentration of ...
February 13, 2007 by Dave

chemistry
If it requires 30.0 milliliters of 1.2 molar HCl to neutralize 20.0 milliliters of NaOH, what is the concentration of the NaOH solution? Balanced equation: NaOH + HCl NaCl + H2O 0.60 M NaOH 0.80 M NaOH 1.3 M NaOH 1.8 M NaOH
June 22, 2011 by Magan

Chemistry Please help
A bottle of 12.0 M hydrochloric acid has only 35.7 mL left in it. What will the HCl concentration be if the solution is diluted to 250.0 mL?
September 29, 2013 by Alexandra

Chemistry
I am confused about where I am going wrong here... Suppose that 1.331 g of impure barium hydroxide is dissolved in enough water to produce 250. mL of solution and that 35.0 mL of this solution is titrated to the stoichiometric point with 17.6 mL of 0.0935 M HCl(aq). What ...
March 13, 2010 by Val

Chem
Using the Absorbance (0.455) of your Unknown SCN- solution and the slope (3163.9) from your Calibration Curve, calculate the concentration of SCN- in the solution created from 5.0 mL 0.200 M Fe(NO3)3, 40.0 mL H2O and 5.0 mL SCN-. How would I calculate?
March 1, 2015 by Mark

ChemistryDrBob222
Concentrated sulfuric acid is 18.4 molar and has a density of 1.84 grams per milliliter. After dilution with water to 5.20 molar the solution has a density of 1.38 grams per milliliter. This concentration of H2SO4 is often used in lead storage batteries(like a car battery). 1...
January 13, 2011 by Kevin

Chemistry
25.0 mL of a NaCl solution (concentration unknown) was found to react with 20 drops of the chloride test solution from the PU Chloride Test Kit. Calculate the mass of NaCl (in grams) in this solution. Calculate the mass of NaCl required to prepare 0.250 L of a NaCl solution ...
October 3, 2010 by kt

math
50gm of a sample of ca(oh)s is dissolved in 50ml of 0.5N hcl solution. The excess of hcl was titrated with 0.3N -naoh. The volume of naoh used was 20cc. Calculate of naoh used was 20cc. Calculate % purity ca(oh)2 Who help me step by step
December 22, 2013 by Fai

Chemistry - Science (Dr. Bob222)
Ammonia is a weak base with a Kb of 1.8 x 10-5. A 100.0 mL sample of 0.13 M aqueous solution of ammonia (NH3) is mixed with 87 mL of 0.15 M solution of the strong acid HCl, calculate the pH of the final solution. A) 2.9 B) 11.1 C) 8.8 D) 5.2 E) None of the above
May 6, 2014 by Ana

Chemistry Solubility help!!!!!!!!!
INFORMATION: [HCl] = 0.1388 M We placed 0.5 g Ca(OH)2 in 100 mL of the following solutions: Flask A: Distilled Water (7.4 mL of HCl needed to titrate) Flask B: 0.05 NaOH (12.1 mL of HCl needed to titrate) Flask C: 0.025 NaOH (10.8 mL of HCl needed to titrate) Flask D: 0.0125 ...
March 26, 2013 by Sally

Chemistry
My chemistry is bad. I know these are very easy but I cannot solve them . 1. a) Prepare 200 ml of 2 M HCl solution from stock bottle containing 37% w/w HCl and d = 1.2 (g/ml). MWHCl = 36.5 g b) Calculate M of 37% w/w HCl solution? d= 1.2, then solve the above problem 2. a) ...
December 4, 2014 by Mel

chem
sorry . Can you please help me with this questions If you know? Oxalic acid is a relatively strong diprotic acid with Ka1 = 5.6 ´ 10-2 and Ka2 = 5.1 ´ 10-5. What is the C2O42- concentration in a solution that is 0.10 M in oxalic acid and 1.0 M in HCl? (Consider that the oxalic...
June 19, 2010 by khin

chemistry 11
I'm having a trouble with this question. "Calculate the concentration of the Solute in mol/L in : a) 125 mL of .64M HCl diluted to 2.0L
July 23, 2009 by Chrys

Physiology
Suppose a salt and a glucose solution are separated by a membrane that is permeable to water but not to the solutes. The NaCl solution has a concentration of 1.95 g per 250 mL (molecular weight = 58.5). The glucose solution has a concentration of 9.0 g per 250 mL (molecular ...
May 14, 2011 by ivy

Chemistry
Calculate mass of iron in tablet by spectroscopy? I have to calculate the mass of iron in a tablet..The manufacturers claim it contains 60 mg elemental iron. background info: The tablet was crushed and dissolved in 25ml of 6M Hcl, filtered and added to a 100ml volumetric flask...
February 14, 2012 by Drake

chemistry
how wold you prepare 2.00L of 1.00M HCl solution using 6.00 M HCl? i already found the volume of 6.00M HCl needed to be .333L. i am confused about how to actually prepare the solution. do i used a volumetric flask or any other glassware?
February 26, 2011 by lindy

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 ...
March 16, 2014 by Serena

College Chemistry
1) A 25mL sample of the .265M HCI solution from the previous question is titrated with a solution of NaOH. 28.25mL of the NaOH solution is required to titrate the HCl. Calculate the molarity of the NaOH solution. 2) A 1.12g sample of an unknown monoprotic acid is titrated with...
October 25, 2010 by Jessica

Chemistry 12
Given the following [H3O+] or [OH-] and the concentration of the solution calculate the dissociation constant, Ka. [OH-] = 3.9 x 10^(-9) M, with a concentration of 0.50M Answer:1.3 x 10^(-11) How do I get this answer?
November 26, 2013 by Shannon

College Chemistry
What is the pH of the following solutions? 1)a solution that is 5.4×10−2 M in HClO4 and 3.0×10−2 M in HCl 2)a solution that is 1.80% HCl by mass (Assume a density of 1.01g/mL for the solution.) Please help! I am so confused!
March 7, 2010 by Katie

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