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July 30, 2014

Search: Find the pH during the titration of 20.00 mL of 0.2470 M benzoic acid, C6H5COOH (Ka = 6.3 10-5), with 0.2470 M NaOH solution

Number of results: 66,800

chemistry
11.During an acid-base titration, 25 mL of NaOH 0.2 M were required to neutralize 20 mL of HCl. Calculate the pH of the solution for each of the following: 12.Before the titration. 13.After adding 24.9 mL of NaOH. 14.At the equivalence point. 15.After adding 25.1 mL of NaOH. ...
May 8, 2013 by Tina

Chemistry
During an acid-base titration, 25 mL of NaOH 0.2 M were required to neutralize 20 mL of HCl. Calculate the pH of the solution for each: a) Before titration b) After adding 24.9 mL of NaOH c) At equivalence pt d) After adding 25. 1 mL of NaOH e) The pH of the equivalence pt ...
May 10, 2014 by al

chemistry
calculate the PH during the titration of 50.00 ml of 0.300 M HNO3 with 0.600 M KOH after 0, 15.50, 25.00, and 40.00 ml of KOH have been added. Graph the titration curve
December 2, 2011 by saud

chemistry
calculate the PH during the titration of 50.00 ml of 0.300 M HNO3 with 0.600 M KOH after 0, 15.50, 25.00, and 40.00 ml of KOH have been added. Graph the titration curve. Ph=
December 2, 2011 by saud

Chemistry
An air bubble is present in the stopcock at the start of the titration but is passed out during the titration. Would this error make your calculated molarity of zinc ions higher or lower than the true value? Thanks!
February 28, 2012 by Joantense

Chemistry
The following reaction can be used to determine the amount of calcium ion present in milk. Before the reaction below is carried out ca2+ is precipitated out of a sample of milk as CaC2O4(s). The CaC2O4(s) is then titrated with MnO4-. 2MnO4-(aq) + 5CaC2O4(s) + 16H+(aq) = 2Mn2+(...
March 29, 2011 by John

Chemistry
Why is it important to keep the NaOH solution (being used during titration) stoppered at all times when it is not in use? And why is it all right to use a wet flask for a titration experiment?
March 26, 2011 by Cassie

anaytical chemistry
experiment: potentiomeric titration 1. Why is continuos stirring (use of stirrer and magnetic stir bar)important in potentiometric titration? 2. Why should the increments of addition of titrant be narrowed down as the titration approaches the equivalence point? 3. What are the...
September 2, 2007 by :kkk:

College CHem
Suppose you accidently add too much NaOH during a titration. You then add a volume of HCl exactly equal to the volume of NaOH actually used in the titration. What effect does this have on the Ka?
March 15, 2010 by Stephany Toussaint

Chem 2
Checking to see if I did this right? Titration of HN03 titrated with NaOH ending result is 1.38. Titration A, endpoint pH = 8 is pKa or pKb= 1.38x106=5.861 and Titration of NH03 titrated with KOH ending results 1.54. Titration B, endpoint pH = 7 is KaorKb= Ka=1.54x105
March 21, 2012 by Debbie

CHEMISTRY PLEASE HELP
a) How will the concentration of NaOH be affected if during the titration some of the solid potassium hydrogen phthalate was spilled during the transfer? Will the concentration of the standardized NaOH increase, decrease, or have no effect? b) How will the molar mass of an ...
October 24, 2011 by Josh

Chemistry
Consider the titration of 25.0mL of 0.10M HAc with 0.10M NaOH. That is, NaOH is added to HAc. (a)pH at the beginning of titration. (b)pH at the equivalence point of the titration. (c) pH at the midpoint of the titration.
February 26, 2013 by Layla

Chemistry
a) How will the concentration of NaOH be affected if during the titration some of the solid potassium hydrogen phthalate was spilled during the transfer? Will the concentration of the standardized NaOH increase, decrease, or have no effect? b) How will the molar mass of an ...
October 24, 2011 by Josh

Chemistry
Acid-Base Titrations a) How will the concentration of NaOH be affected if during the titration some of the solid potassium hydrogen phthalate was spilled during the transfer? Will the concentration of the standardized NaOH increase, decrease, or have no effect? b) How will the...
March 3, 2009 by Jake

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

Chemistry
In a experiment to determine the molecular weight and the Ka for ascorbic acid (vit. c.) a student dissolved 1.3713g of the monoprotic acid in water to make 50 mL of solution. The pH was monitored throughout the titration. The equivalence point was reached when 35.23 mL of the...
May 19, 2007 by Tri

Chemistry
How do you find the initial concentration of the acid give the titration curve of a weak acid-strong base titration?
March 19, 2014 by Anonymous

Chemistry- titration
OK I REALLY NEED HELP!!! and i AM DESEPRATE!! I have a titration courswork tomorow and i need to know the measurment,procedual and significant errors that are made in titration and how they can be improved. Also i need help with the evaluation bit. I REALLY NEED HELP I MANAGED...
December 5, 2006 by H

Chemistry
Find the pH during the titration of 20.00 mL of 0.1000 M butanoic acid, CH3CH2CH2COOH (Ka = 1.54e-5), with 0.1000 M NaOH solution after the following additions of titrant: 0 mL, 14.00 mL, 19.95 mL, 20.00 mL, 20.05 mL, 24.00 mL.
November 23, 2011 by James

chemistry
Hello. In the class, we did the experiment to calculate the value of Kc for the following reaction: CH3COOH+CH3CH2OH CH3COOCH2CH3+H2O we measured the mass for 5 cm^3 of all 5 compound above: CH3COOH 5.236 g CH3CH2OH 4.021 g CH3COOCH2CH3 5.020 g H2O 5.020 g HCl 5.098 g when ...
November 1, 2008 by masaya

Titration
Consider the titration of 100.0 mL of 0.100 M NaOH with 1.00 M HBr. Find the pH at the following volumes of acid added and make a graph of pH versus Va: Va = 0, 1, 5, 9, 9.9, 10, 10.1, and 12 mL.
January 23, 2012 by Sandy

chemistry
25ml of 0.05M of NaOH and the average volume of HCl is 17.7ml after titration and the concentration of HCl is 0.1028M. Find the [OH] eq (from titration). How do u solve this...
March 23, 2011 by roshan

Chemistry
Lab: Titration of NaOH (0.1 molar)to unknown solid acid. Trying to determine the equilivent weight of the unknown acid in the experiement. I am trying to figure out if I add too much base solution by accident to an unknown acid during titration would it affect the equivalent ...
September 26, 2012 by Dee

Chemistry - Acid Base Titration
When you complete a acid base titration of NaOH and HCl and how to you find the molarity/concentration of HCl. I used 9 mL of HCl with 50 mL of water. But when solving for concentration, do I use 9 mL or 59 mL (water + HCl)? Also, does the water in the HCl affect the outcome ...
January 31, 2008 by Steve

Chemistry
How does H2O effect NaH2PO4 during an acid titration?
October 27, 2008 by Jessica

analytical chemistry
why is it necessary to buffer the solution at pH 10 during titration?
August 1, 2010 by lorraine

chemistry
CH3NH2(aq)+H2O(l)=>CH3NH3+(aq)+OH-(aq) Kb=4.4 x 10^-4 Methylamine, CH3NH2, is a weak base that reacts with water according to the equation above. A student obtains a 50.0 mL sample of a methylamine solution and determines the pH of the solution to be 11.77. (a) Write the ...
April 4, 2013 by ashdawg

AP Chemistry
CH3NH2(aq)+H2O(l)=>CH3NH3+(aq)+OH-(aq) Kb=4.4 x 10^-4 Methylamine, CH3NH2, is a weak base that reacts with water according to the equation above. A student obtains a 50.0 mL sample of a methylamine solution and determines the pH of the solution to be 11.77. (a) Write the ...
May 2, 2013 by Christina

Chemistry
HC2H3O2 + NaOH --> NaC2H3O2 + H2O? a. when the titration is only half over, what species are present in the reaction flask b. what can be said about the pH at this point when the titration is half over? c. what is the pH at the equivalence point of this titration? 7, >7...
April 4, 2011 by Anonymous

Chemistry
Why is it important to swirl the NaOH solution each time before using it during a titration?
March 26, 2011 by K

Chemistry Lab
Last week, I did titration of Zn with EDTA experiment. I used calmigte as the indictor. The endpoint of this titration is supposed to be blue. The color change go from wine-red to violet to Blue. I did a mistake by stopping the titration at the violet color. Anyway I can ...
November 10, 2008 by Beckhamano

Chemistry Lab
Last week, I did titration of Zn with EDTA experiment. I used calmigte as the indictor. The endpoint of this titration is supposed to be blue. The color change go from wine-red to violet to Blue. I did a mistake by stopping the titration at the violet color. Is there anyway to...
November 10, 2008 by Beckhamano

Jill
State the relationship of A to B (i.e. <, >, = or can't be determined). 1. Using a 0.05 M Ag+ titrant A.VEP in titration 25-mL of 0.01 M MgCl2 B.VEP in titrating 25-mL of 0.01 M AlCl3 2. A 25.0-mL solution contains 0.015 M NaCl and 0.010 M HCl A.VEP (Mohr) B.VEP (...
February 20, 2012 by Chemistry Homework Help

Chemistry
When a good indicator has been chosen, the pH at which the solution changes color is very close to the equivalience point of the titration. If this "point" for a particular titration occurs at pH x, a good indicator for the titration would be indicator. X indicator 0.9 ? 1.5...
April 8, 2008 by tia

chemisty
Consider the titration of 50 mL of 0.15 M NH3 with 0.1 M HCl. What is the pH at the equivalence point of the titration? (Kb= 1.8X 10-5 Ka= 5.6X10-10)
December 7, 2007 by bert

science
Calculate the pH at 0, 10, 90, 100 & 110% titration for the titration of 50.0ml of 0.1M HCl with 0.10M NaOH?
January 10, 2013 by Eline

chem II
starting with 15.0 ml of 0.370M of organic base pyridine C5H5N a titration is carried out using 0.100M HCL. how do i find the pH before titration, after adding 22.0mL of the acid , at equivalent point and after 41.0mL is of acid is added? where do i begin?
May 2, 2013 by victoria

Chem
In procedure B2, you will titrate a saturated solution to find out how much of the anion dissolved. Assume you we're able to dissolve about 0.12g of potassium hydrogen tartrate in 25.0 mL of water. For the titration, you will use 10.00mL of this sample. How many mL of 0.0500M ...
March 8, 2013 by K

chemistry
if air bubbles remain in the burette during the titration, what will the effect be on the calculated values of :: a- the concentration of NaOh b- the molarity of H2SO4 ??
April 2, 2011 by Huda

science-chem- theory questions
please, help me.. i think i know the answers, but i just want to make sure! i'd love your feed back :) 1) an air bubble is trapped in the tip of a buret before a titration. during the titration, the bubble is passed from the buret tip. will the reported volume of titrant used ...
March 22, 2011 by sarah

Chemistry
Given that 20 ml of a weak acid (HA) was titrated with NaOH and the titration curve of pH vs titrant volume in ml is given, find the initial concentration of the acid? The problem gives the full titration curve starting at pH=2.2 at 0 ml added and with the equivalance pt at pH...
March 21, 2014 by Anonymous

chemistry
hello i'm doing a redox stoichiometry lab having to do with titration 6H +5H2O2 + 2MnO4 -- 5O2 + 2Mn2+ + 8H2O Why is H2O2 the source of O2 product in this titration?
March 22, 2012 by Jo

Chemistry
Draw a titration curce of 25.0 mL of 0.100 M aluminum ion (pKa=5.14) with 0.100 M NaOH. I am familiar with the process of drawing titration curves, however, I have never done an example with an ion (aluminum ion) rather than an actual acid. If anyone can please tell me how to ...
March 11, 2012 by Anna

Chemistry
1.Describe the apparent relationship between H30+ and OH- concentrations when an endpoint is reached in an acid-base titration 2. The indicated end-point of an acid-base titration seldom occurs at a pH of 7. What determines the pH of the end point? 1. They are equal. 2. The ...
May 30, 2007 by MR

chem lab (webwork)
When a good indicator has been chosen, the pH at which the solution changes color is very close to the point of the titration. Complete the table below: If this "point" for a particular titration occurs at pH x, a good indicator for for the titration would be ______________. ...
April 13, 2010 by need help student

Chemistry
During your titration, you overshot your endpoint and your solution was too pink. Would this lead to a final pKa that was too high or too low? Explain why using chemical reasoning.
March 17, 2013 by Shawn

science
During standardization of permanganate solution using sodium oxalate, can the titration between Mno4- and C2o42- at 25degree celcius be perform? state the reasons.
October 29, 2013 by Angela

Chemistry
I don't know how to reply to an answer. First of all thank you! For the question I just asked about the titration curves. Would that mean that titrating with barium hydroxide would take half the volume that is used when titrating with sodium hydroxide? Oh and there was a ...
March 6, 2012 by Niki

chem lab
KMn04 with iron(II) ammonium sulphate hexahydrate-redox titration. 1-what is the purpose of adding H2SO4 to iron sample before the titration? 2-why is there no indicator used to determine the end point for this titration? 3-suggest another possible oxidising agent and reducing...
January 30, 2012 by yuni

chem
calculate the pH during the titration of 100 mL of .200 M HCl with .400 M NaOH after 0,25, 50, and 75 mL NaOH have been added
March 28, 2012 by Brynn

Chemistry
what is important about oxygen being formed during a titration?? (formed in container after it has been titrated not in the burette)
October 29, 2013 by Amber

Chemistry
If two titrations were completed were completed: 1) the titration of HCl with Na(OH) 2)the titration of HCl with Ba(OH)2 (the concentrations of acid and base for both titrations are the same) How would the titration curves of each solution be different? I know what the ...
March 6, 2012 by Niki

chem
Is there any simple way to predict the volume of a second back titration done on a particular antacid substance after completing a titration the first time around?..Thank you every one for responses.
November 10, 2011 by kat

Chemistry
Explain why methyl red would be a good indicator for a titration of 0.25M NaOH with .025M HNO3, but a poor choice for use in a titration of 0.25M NaOH with 0.25M HCN. I'm pretty sure the first step is to find the pH of the two titrations (and then compare those to the pH range...
May 17, 2014 by Julia

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

chemistry
Determine the Molarity of a 125 mL NaOH solution if upon titration with 5.5 mL of an 2.5 M HCl solution, the end point of the titration was reached
June 15, 2011 by liz

chemistry
before beginning a titration, the burnet was not clean. after completing the titration,the student noticed that droplets of the titrant were clinging to the inside surface of the barrel.wolud the molarity be too high or too low?
March 16, 2010 by Anonymous

chemistry
Consider the titration of 100.0 mL of 0.500 M NH3 (Kb = 1.8 x 10-5) with 0.500 M HCl. At the stoichiometric point of this titration, the [H+] is:
June 10, 2012 by Anonymous

college chemistry
Consider the titration of a 50.0 mL sample of a 0.100 M solution of the triprotic weak acid citric acid (H3C6H5O7) with 0.100 M KOH. For citric acid, the three (3) acid dissociation constant values are ka1 = 7.40x10-3, ka2 = 1.70x10-5, and ka3 = 4.00x10-7, respectively. Given ...
April 21, 2010 by Aubree

Phenolphtalein vs Methyl Orange (check my reasonin
Why can either phenolphthalein or methyl orange be used for an HCl-NaOH titration, but only phnolphthalein is suitable for an acetic acid-NaOH titration? Sol: for a while,I misunderstood the question and suggested that Phenol. has a wider array of pH. But then both can be used...
June 12, 2006 by Kizner

AP Chemistry
Hi! For a strong acid-weak base titration what's an example of a titrant, analyte, appropriate indicator, pH at neutralization, and a typical graph of the titration? Help is much appreciated Thank you so much
February 26, 2010 by riley

Calculus
Using the equation x(t)= t^3 - 12t + 1, find the displacement during the first 3 seconds. And then find the velocity during the first 3 seconds. See, I know how to find velocity, but there's a question after that that says to find velocity when t=3...so how do you find it ...
May 8, 2013 by Millie

Chemistry--titrations
What characteristic of phenolphthalein makes it appropriate to use in a HCl/NaOH titration? and is it possible to do a titration without it, and without using another indicator? Why? I really don't get all this because i was gone for the lesson.....
May 11, 2010 by Alexa

chemistry
briefly explain why excess HCl and NaOH solutions must be collected for treatment before disposal, but the titration solution from a completed titration can be safely poured into the drain, diluting with a large amount of water.
March 23, 2011 by Anonymous

chemistry - help
0.3g of clotrimazole (C22H17ClN2) was dissolved in 80ml of anhydrous acetic acid. This was titrated with 0.1M perchloric acid using 0.3ml of naphtholbenzein as indicator until the colour changes from brownish-yellow to green. 1ml of 0.1M perchloric acid is equivalent to 34....
March 28, 2011 by candy

Analytical Chemistry
why is it necessary to store AgNO3 solution in an amber bottle? Why must volhard titration be carried out in strongly acidic medium? Why is titration of AgNO3 with KSCN be done with vigorous swirling?
July 25, 2008 by anonymous

chemistry
a titration is done with with 25.00 mL of a .1500 M HBrO solution is titrated with .1025 M NaOH. Ka for HBrO= 2.0 x10^-9. The pH of HBrO before the titration begins is approx. closest to which of the following a. 0.82 b. 4.76 c. 8.70 d 10.60 e. 13.01 the answer is b 4.76 but how?
October 11, 2010 by anon

chemistry
determination of the oxalate content in k2 cu(c2o4)2 .2h2o, during standardization of permanganate solution using sodium oxalate, can the titration between Mno4- and C2o42- at 25degree celcius be perform?
June 26, 2012 by ABCx

chemistry
A solution of 25mL of 0.5M c2h5nh2 is titrated with hydrochloric acid solution. During titration 5mL of .5M hcl is added dropwise. As volumes are additive. Calculate the pH of the resulting solution
April 7, 2014 by Jesus

Chemistry-TITRATION
A titration of 15.0 cm3 of household ammonia, NH3, required 38.57 cm3 of 0.78M HCl. Calculate the molarity of the ammonia. please show work and detail.
January 15, 2009 by Paige

chemistry
consider a iodometric titration. why we add starch indicator just before the end point????. why cannot we add it before we start the titration???
May 12, 2013 by Tharusha

Chemistry-help needed
Posted by candy on Monday, March 28, 2011 at 3:15pm. 0.3g of clotrimazole (C22H17ClN2) was dissolved in 80ml of anhydrous acetic acid. This was titrated with 0.1M perchloric acid using 0.3ml of naphtholbenzein as indicator until the colour changes from brownish-yellow to green...
March 29, 2011 by candy

CALCULUS
The displacement (in centimeters) of a particle moving back and forth along a straight line is given by the equation of motion s = 3sin(t) + 5cos(t), where t is measured in seconds. (Round all answers to the nearest hundredth.) (a) Find the average velocity during the time ...
August 29, 2010 by Terry

chemistry
On the axis below, draw the titration curve for the titration of CH3COOH (a weak acid) with NaOH (a strong base). In the titration, the equivalence point occurs when 40 mL of NaOH has been added. Make sure to label your x- and y-axis and put numbers on your grid. Make sure ...
April 23, 2012 by Anonymous

ap chemistry
What is the pH at the point during a titration when 34 mL of 0.200 M HCl has been added to 29 mL of 0.0500 M NH3 solution? HCl is a strong acid, Kb=1.810−5 for NH3. Answer in units of pH
February 4, 2014 by gabriella

chemistry - (Dr. Bob222)
A student attempted to synthesize malonic acid which has a molecular weight of 104 g/mol by the same method used to synthesize aspirin. A titration was performed to find the equivalent weight. 0.125 g of malonic acid product was used for a titration that required 24 mL of 0.10...
April 21, 2014 by Ana

chemistry
what is ph during titration of 10.00ml of 0.1000m triethylamine, ch3ch2)3n (kb=2.3x10^-, with 0.1000m HCL solution after addition of titrant (HCL) 1, 0ml, 5ml,10ml, 20ml,30ml
October 14, 2011 by ette

chemistry
If this "point" for a particular titration occurs at pH x, a good indicator for for the titration would be indicator. Note: Provide only 1 indicator name (even if there are other indicators possible) and make sure the spelling is correct. X indicator 0.9
April 23, 2010 by help

Physics
At t = 0, an automobile traveling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 10.9 m until, at t = 1.56 s, it is traveling east. The car does not alter its speed during the turn. Find the car's speed. Find the change in its velocity ...
February 7, 2010 by Max

physics
At t = 0, an automobile traveling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 9.3 m until, at t = 1.38 s, it is traveling east. The car does not alter its speed during the turn. (a) Find the car's speed. (b) Find the change in its ...
February 14, 2010 by candace

physics
At t = 0, an automobile traveling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 10.1 m until, at t = 1.64 s, it is traveling east. The car does not alter its speed during the turn. (a) Find the car's speed. (b) Find the change in its ...
January 28, 2014 by Colin

physics
At t = 0, an automobile traveling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 9.3 m until, at t = 1.38 s, it is traveling east. The car does not alter its speed during the turn. (a) Find the car's speed. ___ m/s (b) Find the change in ...
February 8, 2010 by Cindy

Chemistry
In a titration curve, how do i find the pH1/2??
April 26, 2012 by Saphire

chemistry lab titration
10.0 mL aliquot of 0.100M Na3AsO4 is titrated with 0.100M HCl. pKa1=2.25 pKa2=6.77 pKa3=11.60 Sketch the titration graph by calculating the pH at 0mL, 5mL, 10mL, 15mL, 20mL, 25mL, 30mL, 40mL of HCl.
April 7, 2010 by tara

chemistry
i'm having a hard time for my chemistry project an my topic on titration and my topic is to determine the mass percentage of iron in steel wool and i can not get as much information on the steps to follows how to create the titration and equipment needed etc. please can you ...
May 17, 2010 by piah

Chemistry 12
Hey guys i only have this question left on my review and i just can't fingure it out! Sketch a pH curve for the titration of 40.00mL of 0.100 M hydrazine, H2NNH2, having a K of 3.0x10^-6 by 0.100 M HCIO4 a) what combination of acide-base titration is this? (SA-SB; SA-WB; or SB...
May 22, 2011 by Emma

chem12
Hey guys i only have this question left on my review and i just can't fingure it out! Sketch a pH curve for the titration of 40.00mL of 0.100 M hydrazine, H2NNH2, having a K of 3.0x10^-6 by 0.100 M HCIO4 a) what combination of acide-base titration is this? (SA-SB; SA-WB; or SB...
May 24, 2011 by Emma

Chemistry
When looking at a titration curve, I have to determine which is not true and I have it narrowed down to two options: The initial starting point on the titration curve is where pH depends only on [HA]0 or The finial point on a titration curve the pH depends only on [A-] I would...
April 7, 2013 by Marcus

Chemistry
When looking at a titration curve, I have to determine which is false and I have it narrowed down to two options: The initial starting point on the titration curve is where pH depends only on [HA]0 or The finial point on a titration curve the pH depends only on [A-] I would ...
April 9, 2013 by ramire2

Titration Graph?
Use a spreadsheet to prepare a family of graphs for the titration of 50.0 mL of 0.020 M H2A with 0.100 M NaOH. Consider the following cases: (a) pK1 = 4.00, pK2 = 8.00; (b) pK1 = 4.00, pK2 = 6.00; (c) pK1 = 4.00, pK2 = 5.00.
January 23, 2012 by Kevin

chem
I have a titration of 30ml of .360 M H2C6H6O6 Its K1 =6.8E-5 K2 =2.8 E-12 With .280 M NaOH. It is a weak acid being titrated by a strong base Its a two step process with the ice table to find the eqpts. Ineed to list the volumes of NaOH needed for the titration as I go. Been ...
July 10, 2011 by ted

Biochemistry
The quantity 432mg of a monoamino monocarboxylic amino acid is observed to consume 7.39 mEq of acid and base in the titration range pH 0.8 to 12.0. What is the name of the amino acid? I just did the titration experiment and my brain is fried. I can't begin to start this ...
May 18, 2008 by Dayma

chemistry
hello i'm doing a redox stoichiometry lab having to do with titration so we are given these two equations: 6 H + 3H2O2 + 2MnO4 ---> 4O2 + 2Mn + 6 H2O 6H + 5H2O2 + 2MnO4 --> 5O2 + 2Mn + 8 H2O it asks which reactant is the source of the O2 product in this titration ? Thank...
March 31, 2011 by jewels

chemistry
how do i find ratio of volumeHcl/volumeNaoh for my first trail of titration?
December 22, 2012 by Riana

ap history
when did american economic institutions began to be shaped in a capitalist framework? A.during the colonial period B.during the federalist era C.during the jacksonian era D.during the civil war E.during the late 1890s
September 26, 2010 by lala

Chemistry
Phenolphthalein is an indicator that changes colour to pink/purple between pH 8-->10, however, neutralization occurs when pH=7. Why can phenolphthalein still be used as the indicator during a strong acid-strong base titration with virtually no error?
December 12, 2007 by Lucy

chemistry
how do i calculate the NaOH molarity from a titration of KHP and NaOH after preparing KHP to standardise NaOH. KHP mass was 2.0378g dissoveld in distilled water to fill up a 100ml volumetric flask and only 10ml of this solution was used to in titration
March 22, 2013 by k

chemistry - titration
Show that for the titration of a weak acid, HA, with NaOH solution, at half-titer, pH = pKa. Please explain your answer. Thank you. HA + NaOH ==> NaA + HOH Ka for HA = (H^+)(A^-)/(HA) and solve for H^+. (H^+) = Ka*[(HA)/(A^-) When HA is half neutralized, an equal amount of ...
August 5, 2007 by phil

Chemistry
Alcohol levels in blood can be determined by a redox titration with potassium dichromate according to the balanced equation: C2H5OH(aq) + 2Cr2O7(-2) (aq) + 16H+(aq)---> 2CO2 (g) + 4 Cr3(+)(aq) + 11H2O (l) What is the blood alcohol level in mass perecent if 8.76 mL of 0....
March 26, 2010 by Mary

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