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October 22, 2014

Search: calculate the mass of solid NaOH needed to make 200.mL of a 0.600M NaOH solution

Number of results: 78,351

Chemistry - pH
Calculate the pH of each of the following solutions: a) .35 M hydrochloric acid, HCl b) .35 M acetic acid, HC2H3O2 c) .35 M sodium hydroxide, NaOH Can someone please explain to me how to calculate the pH in a way that is easy to understand? I am confused. Could you please do ...
September 14, 2009 by Mandy

Chemistry
40.0 ml of an acetic acid of unknown concentration is titrated with 0.100 M NaOH. After 20.0 mL of the base solution has been added, the pH in the titration flask is 5.10. What was the concentration of the original acetic acid solution? (Ka(CH3COOH) = 1.8 10−5)
April 10, 2011 by Bob

Chemistry
My head is spinning from this chapter! I've done most of the questions by myself but I have no idea what formulas I should use for these last two. Can you walk me through them so I can understand what I need to do? 1. What volume of 5.0 M HNO3 is required to neutralize 2500 ...
September 26, 2014 by Lissa

chem
what color change happen when water is added to bromothymol blue indicator: a.) after addition of HCl, how does it affects the equilibrium b.) after addition of NaOH, how does it affect the equilibrium c.) after re-addition of NaOH Rewrite the net equation for the equilibrium...
November 26, 2012 by kacey12

chemistry
Calculate the total mass of gold needed to react with 4200g of chlorine to make 7112g of gold(iii) chloride?
January 17, 2011 by naseeb

Math
A doctor needs to administer 2 mL of a solution to a 200 pound patient. However, the doctor has the solution availible only in 20 mg/mL strength. What volume of the 20 mg/mL solution would be needed to administer the desired dose?
July 21, 2008 by LYNN

chemistry
How many milliliters of a 0.200 M HI solution are needed to reduce 21.5 mL of a 0.365 M KMnO4 solution according to the following equation: 10HI+2KMnO4+3H2SO4 ---> 5I2+ 2MnSO4 +K2SO4+ 8H2O
October 18, 2014 by Kayla

Chemistry
Please reply as soon as possible, I really need the answer urgently. How many grams of NaOH are required to completely neutralize 100ml of 1M solution of H2SO4?
September 28, 2010 by Lost In Studies

Chemistry
Calculate the volume of .100M NaOH that must be added to reach ph of 3 in the titration of 25.00 mL of .100M HCl
February 26, 2014 by Chemist in progress

Chemistry
You are using concentrated hydrochloric acid solution (12.0 M)to make 445.0 ml of a 5.85 M solution. Calculate the number of milliliters of concentrated HCl required to make the solution.
March 7, 2013 by Tanya

science
Please check my work 3M solution of NaOH (1 liter worth) molecular weight: 39.99 3 x 39.99= 119.97 grams dilute to 1000mL 3 M solution of HCl (1 L) c1v1=c2v2 (12M)(?)= (3M)(1000mL) ?= 250 mL please check thank you
October 13, 2008 by ag

Chemistry
A 0.750 g sample of an unknown solid is dissolved in 100 mL of water and acidfied with 25 mL of 3 M H2SO4 then titrated with a 0.0200 M KMnO4 solution. If the unknown solid requires 12.5 mL of the KMnO4 solution to reach the endpoint, what is the % sodium oxalate in the ...
April 9, 2013 by Aaron

Chemistry
You made 100.0 ml of a lead (II) nitrate solution for lab but forgot to cap it. The next lab session you noticed that there was only 80.0 ml left. In addition, you forgot the initial concentration of the solution. You decide to take 2.00 ml of the solution and add an excess of...
October 30, 2006 by Anonymous

Chemistry
Ok, I think I have this one but can you please check my work? A nationally known company markets a product called "cleaning vinegar" that is not designed for human consumption. What is the Mass Percent of acetic acid (HC2H3O2) in this product, if 25 drops of .683 M NaOH ...
March 5, 2007 by Toni HELP!

Chemistry
I have a few question for my review. 1) How would you prepare 30.0 ml of 0.600M HNO3 From a stock solution of 4.00M HNO3? What volume in ML of the 4.00 M HNo3 will you need? 2) if a 83.5 & was repoarted for a reaction that could have produced 12.1 g of product? what was the ...
October 10, 2013 by Matt

chem
what test will you perform to determine when you have added sufficient NaOH solution to the reaction mixture in reaction 2
September 29, 2010 by erlicia

chem
what test will you perform to determine when you have added sufficient NaOH solution to the reaction mixture in reaction 2
September 29, 2010 by erlicia

chemistry
A 25 mL solution of .5M NaOH is titrated until neutralization into a 50mL sample of HCl. What was the concentration of HCl?
February 22, 2011 by E

chemistry
ph at equivalence point when 25 ml of a 0.175M solution of acetic acid is titrated with 0.10M of NaOH at its end point
March 19, 2012 by Sharnam

Chemistry
What is the equilibrium equations that result when solid NH4F is dissolved in sufficient water to produce 5.0 mL of 0.5M NH4F solution? How would the addition of 5 drops of 0.1M HCl affect the equilibrium system. Give an explanation. How would the addition of 5 drops of NaOH ...
March 20, 2012 by Megan

math
A doctor needs to administer 2 mL of a 100 mg/mL solution to a 200-pound patient. However, the doctor has the solution available only in 20 mg/mL strength. What volume of the 20 mg/mL solution would be needed to administer the desired dose?
January 1, 2012 by Jamie

chemistry
What mass of the following would be needed to make 50 ml of 0.100 M solution? (i) KOH (ii) Na2CO3 (iii) NaHCO3 (iv) Na2CO310H2O (v) Ba(OH)2 (vi) KMnO4
April 30, 2011 by Anonymous

chemistry
A solution is made at room temperature containing 90 g of NaCl and 200 g of water. It is brought to a temperature of 50C. What are you most likely to see? (Select all that apply.) A. a solution with a few crystals at the bottom B. all the solid dissolve C. a colorless ...
September 13, 2010 by KSLE

Chemistry- Drbob-help
I have placed the answer I got please help. A student makes a solution by dissolving 55.8 grams of potassium hydroxide in 875.0 grams of water. The resulting solution has a density of 1.07 grams per milliliter. 1. What is the volume of this solution? 870mL 2. Calculate the % ...
February 9, 2011 by Paul

chemistry
Given 1.00L of a buffer containing 0.338 M CH3COOH and 0.093 M CH3COONa. Ka(acetic acid) = 1.8 x 10-5. Calculate the pH after the addition of 0.005 moles NaOH.
March 18, 2012 by cathy

chemistry
Given 2.00L of a buffer containing 0.338 M CH3COOH and 0.093 M CH3COONa. Ka(acetic acid) = 1.8 x 10-5. Calculate the pH after the addition of 0.004 moles NaOH.
March 21, 2012 by reichel

chemistry
When excess solid Mg(OH)2 is shaken with 1.00 L of 1.2 M NH4Cl solution, the resulting saturated solution has pH = 9.30. Calculate the Ksp of Mg(OH)2 I am not sure where to even begin on this problem.
March 21, 2010 by Raj

chemistry
What is the percent by mass of 3.55 g NaCl dissolved in 88 g H2O? 2. A solution is made by adding 1.23 moles of KCl to 1000.0 g of water. What is the % by mass of KCl in this solution? 3. If you have 100.0 mL of a 25% aqueous solution of ethanol, what volumes of ethanol and ...
February 10, 2011 by Anonymous

chemistry
A titration was performed on 50.0 ml of .250 M NaOH. After the addition of 71.4 ml of HCl,the phenolphthalein indicator changed from pink to colorless. What was the concentration of the HCl? im not sure how to figure this one out but here goes 200*.250*1000=50000 1000*121.4=...
March 22, 2007 by unknown

Chem 12
Okay, this is a two-part question and the unit is acids and bases. Ka for NH4 is 5.6 x 10^ -10 Kb for NH3 is 1.8 x 10^ -5 1. Determine the pH of a solution prepared by adding 0.0500 mole of solid ammonium chloride to 100mL of a 0.150 molar solution of ammonia. 2. If 0.0800 ...
March 27, 2007 by Kevin

Chemistry
According to the experiment procedure, given that the NaOH solution has a concentration of 0.100M, and that the vinegar (acetic acid) has a concentration of 5.0%m/m (mass percent), what volume(mL) of titrant would be required to reach the "equivalence point", if you place 2....
July 24, 2011 by JP

chemistry
if 50.0 mLs of HCl of unknown concentration is titrated to neutrality with 90.0 mL of .650 M NaOH. calculate the molarity of the HCl
November 14, 2011 by susan

chemistry
if 50.0 mLs of HCl of unknown concentration is titrated to neutrality with 90.0 mL of .650 M NaOH. calculate the molarity of the HCl
November 14, 2011 by susan

Chemistry
Calculate the pH when 39.0mL of 0.321 of HA is mixed with 39.0mL of 0.321M NaOH where HA is a monoprotic weak acid with Ka= 7.5x10^-5 M ?
March 24, 2012 by Jematormal91

chemistry
why can I not use the formula m1v1=m2v2 for the following question: What volume of 1.20 M NaOH will be needed to neutralize 225 mL of 3.0 M sulfuric acid? I get 0.56 L but the answer should be 1.1 L. When am I able to use that formula and when can I not?
October 18, 2009 by drew

chemistry
Concentrated hydrochloric acid is a 38% solution of hcl in water and has a density of 1.18g/ml. How many milliliters of concentrated hydrochloric acid are needed to prepare 500ml of a 1:200 hcl solution. My own three calculation 1.18g/ml x 1000ml x0.38 / 36.46 = 12.3M 500ml x ...
September 20, 2012 by Fai

college chemistry
A zinc-copper battery is constructed as follows: Zn | Zn+2(0.10 M) || Cu+2 (2.50 M)| Cu The mass of each electrode is 200.0 g. Each half cell contains 1.00 liter of solution. a) Calculate the cell potential when this battery is first connected. b) Calculate the cell potential ...
April 28, 2010 by Stephanie

chemistry
the question reads: a) balance the equation: H3PO4 + Ca(OH)2 --> Ca3(PO4)2 + H2O b)what mass of each product results if 750 mL of 6.00 M H3PO4 reacts according to the equation? i balanced it with: 2H3PO4 + 3Ca(OH)2 --> Ca3(PO4)2 + 6H2O but i'm not sure where to go from ...
February 28, 2008 by Anonymous

Math
If a mixture of a 6% acid solution with an 11% solution is to be made, how much of each solution is needed to make 10 liters of an 8% acid solution?
September 2, 2012 by DAD

Chemistry
I need to predict the acid/base reactions of sodium carbonate with HCl, CH3COOH, NH3, and NaOH. I'm stuck, when I'm writing out the ions to find the strongest acid and base, does the NaHCO3 become Na and HCO3, or N, H, and CO3? Also, would these be polyproptic? NaHCO3 ==> ...
March 19, 2007 by Lyn

Analytical Chemistry
I need to prepare a standard iron solution by dissolving an appropriate mass of solid Fe(NH4)2(SO4)2*6H2O in water in a 1L volumetric flask containing 1 ml of 96 wt% H2SO4. The final concentration should be ~40mg/L. How would I calculate the this?
April 19, 2011 by Ryan

chemistry
A 25.0 mL solution of HCl has been spilt. It took 21.8 mL of saturated 2.5 M NaOH to neutralise the acid. What was the molar concentration of the acid?
August 7, 2013 by sarah

Chemistry II
The enthalpy of neutralizatino for the reaction of a strong acid with a strong base is -56 kJ/mol of water produced. How much energy will be released when 230.0 mL of 0.400 M HCl is mixedwith 150.5 mL of 0.500 M NaOH? How do I figure out how much water is produced in the ...
May 20, 2007 by Jayd

chemistry
Solutions of sodium hydroxide cannot be kept for very long because they absorb carbon dioxide from the air , forming sodium carbonate. the unbalanced equation is NaOH(aq) + CO2(g) = Na2CO3(aq) + H2O(l) calculate the number of grams of carbon dioxide that can be absorbed by ...
February 5, 2010 by Philip

chemistry
In a constant-pressure calorimeter, 75.0 mL of 0.830 M H2SO4 was added to 75.0 mL of 0.310 M NaOH. The reaction caused the temperature of the solution to rise from 23.20 C to 25.31 C. If the solution has the same density and specific heat as water, what is ΔH for this ...
February 6, 2013 by Brianna

chemistry
In a constant-pressure calorimeter, 75.0 mL of 0.950 M H2SO4 was added to 75.0 mL of 0.460 M NaOH. The reaction caused the temperature of the solution to rise from 21.13 C to 24.26 C. If the solution has the same density and specific heat as water, what is ΔH for this ...
April 3, 2013 by Lyndzey

Physics
In a constant-pressure calorimeter, 75.0 mL of 0.810 M H2SO4 was added to 75.0 mL of 0.390 M NaOH. The reaction caused the temperature of the solution to rise from 22.68 C to 25.34 C. If the solution has the same density and specific heat as water, what is ΔH for this ...
October 20, 2014 by KTM

chemistry
What will be the final pH value if you mix 50ml HCl (aqueous solution, pH=0.5) and 40ml NaOH (aqueous solution, pH=12). Hint: convert pH value to concentration of acids/base, then consider the neutralization reaction, then find out the resulting pH value. Please show me your ...
April 4, 2013 by Anonymous

Chemistry - please this is urgent
To a calorimeter containing 41.80g of water at 29.95oC, 11.7999 of a salt was added with stirring. As the salt dissolved, the temperature rapidly changed to 37.85oC before slowly returning to room temperature. 1. Calculate the Heat of Solution. Given that the Heat of Formation...
March 14, 2008 by girl who needs help in chemistry right now

Chemistry
Calculate the number of grams of solid Mg(OH)2 that will dissolve in 650 mL of water. For Mg(OH)2, Ksp = 1.5 x 10-11. Assume no volume change for the solution when the solid is added. A. 0.0093 B. 0.0059 C. 0.012 D. 0.019 E. 0.060 I got 0.0059, but I'm not sure if this is ...
December 26, 2012 by Jessica

chem
What is the pH of a solution prepared by adding 4.000 grams of NaOH to a 50.00 mL of a buffer that is 2.00 molar both in acetic acid and sodium acetate? (Assume final volume is still 50.00 mL)
April 21, 2010 by phil

chem
Consider the reaction that occurs on mixing 50.0 mL of 0.560 MNaHCO3 and 50.0 mL of 0.400 M NaOH at25oC. (a) Write a balanced net ionic equation for thereaction. (b) What is the pH of the resulting solution?
March 29, 2011 by pal

chemistry
What is the molar concentration of all ions present in a solution prepared by mixing the following? Assume that volumes of the solutions are additive, and neglect H+ and OH- from water. 60.0 mL of 0.25 M KCl and 80.0 mL of 0.85 M NaOH.
September 28, 2014 by Anonymous

Chemistry
Calculate the theoretical pH after 2.50ml and 9.50ml of NaOH has been added in both the titration of HCl and of HC2H3O2.
May 10, 2011 by anna

chemistry
how to calculate the ph level of 2.5g NaOH, 2g H2SO4 and 1.5g ethenoic acid in water? Each compound being put in a liter of water.
August 17, 2013 by livingstone

ap chemistry
A mixture contains only NaCl and Fe(NO3)3. A .456 gram sample of the mixture is dissolved in water and an excess of NaOH is added, producing a precipitate of Fe(OH)3. The precipitate is dried and filtered, and its mass is determined to be .107 g. The mass of iron in the sample...
October 6, 2010 by kelly

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

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
The density of an aqueous solution containing 10% of ethanol (C2H5OH) by mass is 0.984 g/ml. A) Calculate the molality of this solution. B) Calculate its molarity. C) What volume of the solution would contain 0.125 mol of ethanol.
March 17, 2010 by Hilavidpreet

Chemistry
What is the [S^-2] in a saturated solution (.1 M) of H2S, in which the pH had been adjusted to 5.00 by the addition of NaOH? For H2S, Ka1= 1.1X10^-7 and Ka2=1.0X10^-14
February 13, 2011 by Kate

CHEMISTRY
If one added 130 mL of 2 M NaOH to 1 L of a buffer composed of 2.3 M NH3 and 3.2 M NH4Cl, what would be the pH of the resulting solution? The Kb of NH3 is 1.8 10−5.
May 17, 2011 by Anna

chemistry
i need help with finding the ph of a buffer solution initially consisting of 0.0400 moles NH3 and 0.025 moles NH4^+ and 20 ml 0.75 NaOH. ka of NH+4 = 5.6 10^-10
March 19, 2012 by joelle

chemistry
i need help with finding the ph of a buffer solution initially consisting of 0.0400 moles NH3 and 0.025 moles NH4^+ and 20 ml 0.75 NaOH. ka of NH+4 = 5.6 10^-10
March 19, 2012 by joelle

chemistry
Find the pH during the titration of a 20.00mL of 0.1000 M butanoic acid, CH3CH2CH2COOH (Ka=1.54 x10^-5), with the addition of 10 mL of 0.1000 M NaOH solution??
April 9, 2012 by anonymous

chem
A hydrofluoric acid buffer solution has the following concentrations: [HF]=0.43M [F-]=0.45M If 40 mL of 0.1M NaOH is added to 500 mL of the buffer, what is the resultant pH?
April 19, 2012 by Jess

Chemistry
If I spill 100ml of a .5 M H3PO4 solution, how many grams of NaOH should be dissolved in water and added to the spill to neutralize the acid?
October 10, 2012 by Loretta

Chemistry
If I spill 100ml of a .5 M H3PO4 solution, how many grams of NaOH should be dissolved in water and added to the spill to neutralize the acid?
October 10, 2012 by Loretta

chemistry
How many milliliters of a 0.100 M NaOH solution are required to neutralize 25.0 milliliters of 0.150 M HCl? Select one: a. 25.0 ml b. 37.5 ml c. 125 ml d. 167 ml
July 24, 2014 by Alex

Chemistry
To a beaker containing 200 mL of a solution of CuSO4 was added 10.0g of magnesium metal. When the reaction was complete, a mixture of Mg and Cu having a mass of 14.50g remained in the beaker. Calculate the molarity of the original CuSO4 solution. I understand that I need to ...
February 17, 2012 by Kay

Chemistry
What could be the effects of carbonate error on the calculated values for the standardization and the sample analysis? What could be the requirements for a compund to be able to undergo double indicator titration? IF the standardization AND sample analysis is done with the ...
July 8, 2007 by Chin

Chemistry
Anyone able to balance/do the equation: C8H7O2COOH + NaOH -> I can't figure out the products. C8H7O2COOH + NaOH =>C8H7O2COONa + H2O acid + base ==> salt + H2O Merci buckets. :D Oui, oui! Oui, oui! is C8H7O2COONa an acidic salt or basic salt?
October 26, 2006 by Ariel

CHEMISTRY
Wondering If I did this correctly so far 50.0 ml of a 0.0500 M solution of lead (II) nitrate is mixed with 40.0 ml of a 0.200 M solution of sodium iodate at 25C. Calculate the Pb2+ and IO3- concentrations when the mixture comes to equilibrium. At this temperature the Ksp for ...
May 14, 2007 by Jason

chemistry
calculate the concentration of a solution when 35.0g of k2so4 is dissolved in enough water to make to make 125.0g solution.
April 24, 2014 by yasminb.

chemistry
A 2.3g sample of MgX is reacted with NaOH. The Mg(OH)2 precipitate had a mass of 1.8g. What is the % of Mg in the original sample?
October 15, 2007 by corey

Biochem
10ml of HCl acid titrate with 9.9ml of NaOH. What is the mass in grams of HCl?
August 3, 2010 by Amrik

Organic Chemistry
What are the advantages of using a solvent pair for recrystallization? Select all that apply. A) You can control the solubility of the substance in the mixed solvent. B) You don't have to know the exact amounts of the solvents needed. C) You can quickly make the solution ...
September 29, 2011 by Lisa

chemistry
How many grams of solid potassium hydroxide are needed to exactly neutralize 10.8 mL of a 1.25 M hydrobromic acid solution
October 22, 2012 by Kaitlin

Chem- follow up question
Sorry i posted this as an answer after my question had been answered, this is continued from the qualitative analysis question: That reallly cleared some things up, but I do still have a few questions. Umm im not completely clear on the hyrogen peroxide subject. its added to a...
February 28, 2010 by Joe

chemistry
a chemist has a supply of cuso4 solution that contains 230 gram per litre of water. she wishes to make a copper sulphate solution that has a solution of 200.0 grams per litre gow ,uch of her copper sulphate solution should she use and how much water should be added to make ...
May 18, 2014 by Cassie

Are these correct?
A) How do you make 200 mL of a 0.1 M solution of a substance that has a molecular weight of 121.1 g/mol? Answer I got: 200mL = 1/0.1M x 1/(121.1g/mol) x mass of the substance. mass of the substance = 0.2L x 0.1M x 121.1g/mol=2.42g Note that my answer doesn't reveal how to do ...
February 1, 2008 by Anonymous

Chemistry
Determine the molar mass of the unknown acid.? A 0.167-g sample of an unknown acid requires 27.8 mL of 0.100 M NaOH to titrate to the equivalence point. Elemental analysis of the acid gives the following percentages by mass: 40.00% C; 6.71% H; 53.29% O.
December 5, 2009 by Kyle

Chemistry
Determine the molar mass of the unknown acid.? A 0.167-g sample of an unknown acid requires 27.8 mL of 0.100 M NaOH to titrate to the equivalence point. Elemental analysis of the acid gives the following percentages by mass: 40.00% C; 6.71% H; 53.29% O.
December 6, 2009 by Kyle

chemistry
the molar mass of NaOH is 40g/mol, how many grams ofNaOH are required to yield 0.65 mol?
March 9, 2013 by Lina

CHM1045
NH4NO3(s) right arrow NH4+(aq) + NO3−(aq) In order to measure the enthalpy change for this reaction, 1.21 g of NH4NO3 is dissolved in enough water to make 25.0 mL of solution. The initial temperature is 25.8C and the final temperature (after the solid dissolves) is 22....
March 30, 2013 by Philip Golden

Chemistry
What is the pH of 125 mL of a 1.59 M solution of a monoprotic weak acid, HA (Ka=9.53105), after 29 mL of 0.37 M NaOH is added? I have no Idea how to start this problem and the homework is due tonight, could someone please help me in calculating this? Thanks
March 31, 2013 by Cory

chemistry
A chemist makes a stock solution of KOH by dissolving 1050.0 grams in enough water to make 1.50 liters of solution. If later on the chemist wants to use this stock solution to make 200.0 mL of 0.10 M KOH, what would the chemist need to do? (Define the steps and show the ...
May 25, 2012 by Jim

Chem
Calculate the concentration of NH4+ from ammonium chloride required to prevent the precipitation of Ca(OH)2 in a liter of solution that contains .10 mol of ammonia ans .10 mol pf calcium ion. I got the two equations but I do not know where to begin. The question asks for (NH4...
May 7, 2007 by Anonymous

Chemistry 11
calculate the mass of impure KOH needed to make up 1.20 L of 0.60 mol/L KOH(aq)? Assume the impure KOH is 84% KOH by mass and 16% water.
June 16, 2013 by LG

Chemistry(Please check)
Which of the following mixtures will be a buffer when dissolved in 1 liter of water? 0.10 mol Ba(OH)2 and 0.20 mol HCl 0.30 mol KCl and 0.30 mol HCl 0.40 mol NH3 and 0.40 mol HCl 0.20 mol HNO2 and 0.10 mol NaOH 0.20 mol HBr and 0.10 mol KOH My answer is that HNO2 and NaOH will...
April 8, 2012 by Hannah

chemistry
A solution contains 10.05 grams of an unknown covalent substance in 50.0 grams of water. The freezing point of this solution is (-) 3.16o C. What is the formula weight of the unknown compound? Below is what I tried, but don't know what to do next. Please explain step-by-step. ...
October 11, 2013 by Anonymous

Chemistry
Acetylsalicylic acid (C9H8O4) is a monoprotic acid commonly known as "aspirin." A typical aspirin tablet, however, contains only a small amount of the acid. In an experiment to determine its composition, an aspirin tablet was crushed and dissolved in water. It took 12.25 mL of...
September 22, 2013 by Anonymous

chem
1. 50.00 mL of an unknown monoprotic acid is titrated with 0.132 NaOH. It takes 25.25 mL of base to reach the equivalence point. Calculate the concentration of the acid.
July 25, 2010 by Anonymous

JJ
A 30.84 mL volume of 0.128 M NaOH is required to reach the phnolphthalein endpoint in the titration of a 5.441 g sample of vinegar. Calculate % acetic acid in the vinegar.
August 25, 2010 by Jeffrey

chemistry
Calculate the pH during the titration of 20.00 mL of 0.1000 M CH3CH2CH2COOH with 0.1000 M NaOH after 26.5 mL of the base have been added. Ka of butanoic acid = 1.54 x 10-5.
October 31, 2010 by karla

chemistry
Calculate the pH during the titration of 20.00 mL of 0.1000 M CH3CH2CH2COOH with 0.1000 M NaOH after 26.5 mL of the base have been added. Ka of butanoic acid = 1.54 x 10-5.
October 31, 2010 by karla

Chemisty
A total of 31.3 ml of 0.15 N NaOH was required to reach a phenolphthalein endpoint in titrating 6.00 g of vinegar. Calculate the number of equivalents of acetic acid in vinegar.
February 20, 2012 by Eliazbeth

lab
A total of 31.3 ml of 0.15 N NaOH was required to reach a phenolphthalein endpoint in titrating 6.00 g of vinegar. Calculate the number of equivalents of acetic acid in vinegar.
February 20, 2012 by Eliazbeth

chemistry
determining the concentration of a strong acid HCl when your given that the volume is 10ml and the mass of NaOH is 0.10 and the volume is 13.45
December 10, 2012 by ashley

Biochemistry
This is my last question and I just am not getting it for some reason. Prepare a 500 ml of 0.15 M tris buffer, pH 8.25 from tris mono hydrochloride, 0.400 M HCL, and 0.350 M NaOH. Determine amounts needed and them write the recipe. Pka for tris is 8.00
August 24, 2012 by Kaylee

science
Calculate the pH of a solution created by mixing 200.0 mL of 0.400 M acetic acid and 200.0 mL of 1.00 M sodium acetate. Hint: The instant the two solutions are mixed what are the initial concentrations of each?
February 14, 2011 by Bruce

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