# i have no idea how to do this! Calculate the volume of the specified titrant required to neutralize 35 ml of .4 M NaOH. Titrant: 0.75 M H2SO4 [2NaOH + H2SO4 „» 2H2O + Na2SO4]

52,959 questions
1. ## AP Bio (but its a question about chemistry)

i have no idea how to do this! Calculate the volume of the specified titrant required to neutralize 35 ml of .4 M NaOH. Titrant: 0.75 M H2SO4 [2NaOH + H2SO4 „» 2H2O + Na2SO4]

asked by katie on July 24, 2011
2. ## chemistry

Calculate the volume of the specified titrant required to neutralize 35 ml of .4 M NaOH. Titrant: 0.75 M H2SO4 [2NaOH + H2SO4 „» 2H2O + Na2SO4]

asked by luv2swim on July 24, 2011
3. ## Redox Titration questions!

Oh goodness, I'm such a pain! I need some help with these! How do I calculate the percentage? How do I start it? 2. Imagine that you ran a similar titration using a different iron sample with 0.02 M KMnO4 as the titrant. Calculate the percent of iron in

asked by Angel on June 11, 2008
4. ## Chem 104

From M1V1=M2V2 the volume of the KHP solution the molarity of the titrant and the volume of the titrant, find the molarity of the KHP solution . The KOH solution is the titrant since it is used to titrate the KHP solution. KHP mass-204.2 Mass per liter in

asked by Hannah Marie on November 10, 2016
5. ## chemistry

Calculate the pH values and draw the titration curve for the titration of 500 mL of 0.010 M acetic acid (pKa 4.76) with 0.010 MKOH. Calculate the pH of the solution after 490 mL of the titrant have been added. Calculate the pH of the solution after 500 mL

asked by Crystal on February 3, 2017
6. ## chemistry

Calculate the pH values and draw the titration curve for the titration of 500 mL of 0.010 M acetic acid (pKa 4.76) with 0.010 MKOH. Calculate the pH of the solution after 490 mL of the titrant have been added. Calculate the pH of the solution after 500 mL

asked by Jasmine on January 31, 2017
7. ## Chemistry

The equivalence point of any acid titrated with a base occurs when the A. concentration of the acid and concentration of the titrant are equal. B. mass of the acid and the mass of the titrant are equal. C. pH of the mixture of the acid and titrant is 7.0.

asked by coco on August 14, 2015
8. ## Chemistry

Calculate the theoretical pH after 2.50 mL and 9.50 mL of NaOH has been added in both the titration of HCl and of HC2H3O2. Indicate if the volume of NaOH is before or after the equivalence point. Compare these theoretical values with the actual values

asked by agreed on July 14, 2010
9. ## Chemistry

You run a titration using HCI as the sample with 3.56M KOH as the titrant. Calculate the concentration of the HCI if the sample size were 25 mL, and if the volume of the titrant used were 29.6 mL.

asked by Jared on April 10, 2008
10. ## General Chemistry

Calculate the theoretical pH after 2.50 mL and 9.50 mL of NaOH has been added in both the titration of HCl and of HC2H3O2. Indicate if the volume of NaOH is before or after the equivalence point. Compare these theoretical values with the actual values

asked by Ashley on November 6, 2011
11. ## CHM

How much titrant will be required if your EDTA titrant is exactly 0.01 M and you weighed out exactly 0.4 g calcium carbonate?

asked by Jesica on September 21, 2014
12. ## CHM Lab

How much titrant will be required if your EDTA titrant is exactly 0.01 M and you weighed out exactly 0.4 g calcium carbonate?

asked by Haju on September 21, 2014
13. ## chemistry pH

A 25 mL sample of 0.29 M LiOH analyte was titrated with 0.75 M HI at 25 degree Celsius. 1)Calculate the initial pH before any titrant was added. 2) Then calculate the pH of the solution after 5 mL of titrant was added.

asked by Mizuhara on October 13, 2014
14. ## chemistry

What volume of titrant would be required to reach the equivalence point in the titration of 25.0 mL and 0.825M CH3NH2 with 1.00 M HCL?

asked by Anonymous on October 19, 2011
15. ## chemistry

For each titration of a buffer, how do i calculate how many mLs of titrant were required to obtain a 1.00 pH unit change from the initial pH?

asked by Wendy on February 27, 2011

Please help to determine the (%w/w) benzoyl peroxide (C14H20O4) in a sample. Procedure: 2.500g of sample was dissolved in 75ml dimethylformamide and diluted to 100.0ml with the same solvent. (Solution T). To 5.0ml of Solution T, 20ml of acetone and 3ml of

asked by angela on August 3, 2010
17. ## chemistry

1. the volume of an idea gas is 2.06L at standard temperature and pressure. Calculate the volume at 1.75 atm and 27CELCIUS. 2. Ethane, C2h6 has a molar heat of vaporization of 15kj/mole. How many kilojoules or energy are required to vaporize 5 g of ethane?

asked by stephanie on December 1, 2009
18. ## Chemistry

Can someone check my answers? Thanks. 1.) If you were involved in an acid rain monitoring project with several other samplers, why would it be important that all of you collect your samples on the same day and do the alkalinity tests within 24 hours? Acid

asked by Joe on March 21, 2007
19. ## Chemistry check

Can someone check my answers? Thanks. 1.) If you were involved in an acid rain monitoring project with several other samplers, why would it be important that all of you collect your samples on the same day and do the alkalinity tests within 24 hours? Acid

asked by Joe on March 21, 2007
20. ## 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

asked by Lissa on September 26, 2014
21. ## Chemistry

A 25.00 ml sample of a standard solution containing 1 g of CaCO3/L required 25.20 ml of EDTA to fully complex the Ca present. Calculate the volume of EDTA stoichiometrically equivalent to 1.0 mg of CaCO3. From the volume of EDTA required in titrating the

asked by Anonymous on March 14, 2010

Hi, sorry I missed out something. The titrant used was 0.100M Sodium thoiosulphate.Do I have to consider its concentration in the calculations? Thanks a lot. Posted by angela on Tuesday, August 3, 2010 at 6:58pm. Please help to determine the (%w/w) benzoyl

asked by angela on August 3, 2010
23. ## chem TITRATION

1. If a student fails to remove a large air bubble in the buret before beginning the titration, what will be the effect on the volume of titrant required to reach the titration endpoint? A. The student will record a volume that is SMALLER than it should be

asked by A on May 25, 2018
24. ## Chemistry

Analysis of Tap water (Hardness) 50.00 mL of tap water was transferred to a 250 mL erlenmyer flask. 10mL of NH3/NH4^+ ph 10 buffer was added to the flask, as well as 6 drops of eriochrome black T indicator. This soln was then titrated with EDTA

25. ## Chemistry

How do you calculate the volume of titrant needed to reach the endpoint of a reaction when you are given the mls and molarity of a strong base and only the molarity of a weak acid?

asked by Annie on April 10, 2009
26. ## Chemistry

Volume of HCl, mL:26.5mL Volume of NaOH,mL:29.1mL Molarity of NaOH, mol/L:0.1m/L balanced equation: NaOh+HCl-->NaCl+H2O Using the above equation calculate the number of moles of acid required to react with 2.91 moles of base. Please help me I have no idea

asked by Gaby on May 28, 2012
27. ## Applied Programming

APPLIED PROGRAMMING (APR520S) ASSIGNMENT 1 Problem Solving Tools Total Marks: 50 Marks Due: Friday 22 August 2014 Suppose we want to construct a C/C++ program that can be used to calculate the area or the volume for a range of 2-D and 3-D shapes

asked by Pineas on August 19, 2014
28. ## 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

asked by sheyla on July 26, 2010
29. ## 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

asked by Pauline on July 29, 2014
30. ## chemistry

Ethanol ( C2H5OH) undergoes a reaction with oxygen gas in the air. Calculate the volume (l) of oxygen gas at 45 degrees celcius and mmHg that is required to react with 185 g ethanol. Then calculate the volume of air required to react with 185 g assuming

asked by Anonymous on October 30, 2017
31. ## 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

asked by sarah on March 22, 2011
32. ## Chemistry Titration Lab HELP!

Hi everyone! I just got a new lab that I MUST complete today, and it's about titration- I have absolutely no clue how to do it, it just doesn't make sense to me! I hope that someone can help explain to me how to do it so I can finish ASAP!! Thanks a lot,

asked by Angel on June 11, 2008
33. ## Chemistry

A chemist performs an acid–base titration using 0.176 M aqueous NaOH as the titrant with 26.15 mL of 0.102 M H2SO4. The endpoint of the titration is detected using phenolphthalein as the indicator. The balanced equation for the reaction is shown below:

asked by Onye on March 4, 2018
34. ## 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

asked by JP on July 24, 2011
35. ## johnson

Work these titration calculations: 1. A titration of 15.0 cm3 of household ammonia, NH3, required 38.57 cm3 of 0.78M HCl. Calculate the molarity of the ammonia. 2. What volume of 0.5M HNO3 is required to neutralize 25 cm3 of a 0.2M NaOH solution? 3.

asked by Lemun on June 18, 2012
36. ## usm

A volume of 10.0 of a 0.190 solution is titrated with 0.770. Calculate the volume of required to reach the equivalence point.

asked by ren on October 29, 2012
37. ## Chemistry

What volume in liters will be required to dissolve 60.9 grams of Mg(OH)2? Ksp = 1.8×10-11 After doing the math, i got 1.58e-4, but its not right, so i have no idea what to do now.

asked by Brianna on March 25, 2014
38. ## Chemistry 111

a)For the titration of an acid analyte with a NaOH titrant, a phenolphthalein endpoint will change from colorless to pink. If the "pink" resulted from perhaps only a half-drop(or less) of NaOH titrant and the Erlenmeyer flask is set aside on the laboratory

asked by Alix on April 5, 2011
39. ## Chemistry

Accurately weigh 0.9-1.1 g into a 200 mL beaker. Dissolve the KIO3 in a small amount of distilled water. Quantitatively transfer, with rinsing, to a 500 mL volumetric flask. Dilute to the calibration mark and shake well. Rinse the buret several times with

asked by Jessica Horen on September 30, 2014
40. ## Biochemistry

You wish to make 3 reactions (1 ml each) with the specified amounts of protein. The remainder of each reaction consists entirely of buffer. The source of your protein is a stock solution that has a concentration of 0.5 mg/ml. What is the volume of stock

asked by Alwxy on October 22, 2016
41. ## Chemistry

Determine the concentration of 20.0 mL of the sulphuric acid when 1.00 mol/L sodium hydroxide is used as the titrant. Observations: Initial volume of H2SO4 __________. Final volume of H2SO4 __________. Volume of H2SO4 added __________.

asked by Emanuela on May 26, 2017
42. ## chemistry

Determine the concentration of 20.0 mL of the sulphuric acid when 1.00 mol/L sodium hydroxide is used as the titrant. Observations: Initial volume of H2SO4 __________. Final volume of H2SO4 __________. Volume of H2SO4 added __________.

asked by dev on April 28, 2016
43. ## CHEMESTRY

calculate the minimum volume of hydrogen gar hn cubic centimetres required to convert 3.18 g of CuO to Cu at s.t.p. (Cu=64, O=16, H=1; molar gas volume at stp = 22.4 dm^3

asked by The Okome on April 8, 2019
44. ## Chemistry

Analysis of Tap water (Hardness) Was analyzed by a complexometric titraion by the following equations 1 & 2 1. Ca^2+ + Mg^2+ --> Ca^2+ + Mg(Indicator) 2. Mg(Indicator) + Ca^2+ + EDTA^4- --> CaEDTA^2- + MgEDTA^2- + free indicator For the volume of titrant

45. ## Chemistry

A titration involves titrating 0.4 M NaOH into a solution of 0.2 M H3PO4. a.) Calculate the volume of NaOH that will be required to reach the first equivalence point. b.) Calculate the volume of NaOH required to reach the second equivalence point. Other

asked by Anonymous on February 8, 2014
46. ## CHEMISTRY

Suppose that 30.0 mL of 0.20 M C6H5COO(aq) is titrated with 0.30 M KOH(aq). a) What is the initial pH of the 0.20 M C6H5COOH(aq)? b) What is the pH after the addition of 15.0 mL of 0.30 M KOH(aq)? c) What volume of 0.30 M KOH(aq) is required to reach

asked by Sarah on September 29, 2011
47. ## college

Consider the titration of 50.0 mL of 0.20 M NH3 (Kb=1.8*10^-5) with 0.20 M HNO3. Calculate the pH after addition of 50.0 mL of the titrant.

asked by Syra on June 21, 2010
48. ## Chemistry

What volume of 0.300 M Na3PO4 is required to precipitate all the lead(II) ions from 130.0 mL of 0.400 M Pb(NO3)2? Can you please show the steps I have no idea how to solve

asked by Ashley on June 21, 2013
49. ## Chemistry

what volume of concentrated 18M H2SO4 is required to prepare 250mL of a 6.0M solution? how would you solve this problem? i know it has something to do with the molarity formula but no idea how to apply it

asked by Lena on March 4, 2014
50. ## chemistry

Predict the effect (Increase, Decrease, No effect, Indeterminate)and explain why 1. Condition: In the determination of water hardness, the water sample contained appreciable amount of ferric ions Paameter: ppm CaCO3 2. Condition: Instead of MgCl2*H2O,

asked by :kkk: on August 31, 2007
51. ## analytical chemistry

Predict the effect (Increase, Decrease, No effect, Indeterminate)and explain why 1. Condition: In the determination of water hardness, the water sample contained appreciable amount of ferric ions Paameter: ppm CaCO3 2. Condition: Instead of MgCl2*H2O,

asked by :kkk: on August 31, 2007
52. ## chemistry help

In the following questions, assume that no excess distilled water was added from a wash bottle during the titration of 10.00 mL of vinegar with your standardized solution of NaOH. A. calculate the pH of vinegar. B. what was the pH of the solution after

asked by jk on April 1, 2015
53. ## chemistry

In the following questions, assume that no excess distilled water was added from a wash bottle during the titration of 10.00 mL of vinegar with your standardized solution of NaOH. A. calculate the pH of vinegar. B. what was the pH of the solution after

asked by jk on April 1, 2015
54. ## Chemistry

Consider the titration of 50.0 mL of 0.20 M NH3 (Kb = 1.8x10^-5) with 0.20 M HNO3. Calculate the pH after addition of 50.0 mL of the titrant.

asked by Anonymous on October 7, 2009
55. ## Chemistry 101

A volume of 20.0 mL of a 0.140 M HNO3 solution is titrated with 0.850 M KOH. Calculate the volume of KOH required to reach the equivalence point.

asked by Caitlyn on March 9, 2018
56. ## Chemistry

Suppose that 30.0 mL of 0.20 M C6H5COOH(aq) is titrated with 0.30 M KOH(aq). (a) What is the initial pH of the 0.20 M C6H5COOH(aq)? (b) What is the pH after the addition of 15.0 mL of 0.30 M KOH(aq)? (c) What volume of 0.30 M KOH(aq) is required to reach

asked by Alania on November 3, 2010
57. ## chemistry

A volume of 100mL of a 0.800 M HNO3 solution is titrated with 0.640 M KOH. Calculate the volume of KOH required to reach the equivalence point.

asked by LL on August 6, 2012
58. ## Chemistry

A volume of 100mL of a 0.330M HNO3 solution is titrated with 0.370M KOH. Calculate the volume of KOH required to reach the equivalence point.

asked by Ines on October 23, 2014
59. ## Chemistry

How do you calculate alkalinity in chemistry? Ex: List the values for total alkalinity for Sample A and Sample B A 104 drops of titrant (5.25mL) 3 drops of C20 H14 O4 B 81 drops of titrant (4.25mL) 3 drops od C20 H14 O4

asked by anon on August 15, 2016
60. ## chm

Calculate the theoretical amounts of 0.1000 M NaOH titrant used to titrate 0.8 and 0.9 g KHP

asked by guru on September 14, 2014
61. ## CHM

Calculate the theoretical amounts of 0.1000 M NaOH titrant used to titrate 0.8 and 0.9 g KHP

asked by Helin on September 14, 2014
62. ## Chemisty

A 2.5 L volume of sodium hydroxide solution was prepared. The titrant was standarized against primary standard oxalic acid dihydrate, H2C2O4*H2O(molar mass is 126.06) if a 0.4774g sample of the prmiary standard consumed 31.94mL of the base solution in

asked by Brittany on May 9, 2012
63. ## Chemistry

Suppose that 30.0 mL of 0.20 M C6H5COOH(aq) is titrated with 0.30 M KOH(aq). Refer to table 1 and table 2. (a) What is the initial pH of the 0.20 M C6H5COOH(aq)? Using ICE i found to be 2.46 The rest I do not know how to set up or solve... (b) What is the

asked by Val on March 12, 2010
64. ## Chemistry

I've got a similar question as a previous student. What is a minimum volume (in gallons) of ethylene glycol (CH2OHCH2OH, an antifreeze) that has to be added to 3.00 gal of water if you desire this engine cooling solution (for a auto radiator) NOT to be

asked by Holly on September 25, 2012
65. ## chemistry

Temp - 650 Pressure - 690mm Hg mass - 0.927g volume - 194cm3 How do I calculate the volume of the gas? You have the volume, given. How do I calculate the volume at a different temperature?

asked by bex on February 27, 2007
66. ## chemistry

calculate the volume of 0.0321M NaOH that will be required to neutralize 25.00 mL of a 0.0399M hydrochloric acid solution. M1v1=m2v2 since were trying to find out the volume I would change the equation to m2 times V2 divided by M1 0.0399 X 0.025/0.0321

asked by elizabeth on November 2, 2014
67. ## CHEMISTRY (IODINE VALUE-continuation)

y question is about Determination of Iodine Value in Fats & Oils experiment. I can't seem to get the right IV for coconut oil (Iv = 7-11 range). I followed the procedure used by American Oil Chemists Society, but still I'm getting an IV value of around 1.

asked by Summer on July 28, 2014
68. ## Chemistry

Suppose that 50.0 mL of 0.25 M CH3NH2(aq) is titrated with 0.35 M HCl(aq). (a) What is the initial pH of the 0.25 M CH3NH2(aq)? (b) What is the pH after the addition of 15.0 mL of 0.35 M HCl(aq)? (c) What volume of 0.35 M HCl(aq) is required to reach

asked by Dana on November 3, 2010
69. ## Chemistry

Consider the titration of 30.0 mL of 0.100 M NH3 with 0.150 M HCl. calculate the pH after the following volumes of titrant have been added:(a) 0mL (b) 10.0 mL (c) 19.5 mL (d) 20.0 mL (e) 20.5 mL (f) 30 mL

asked by Max on March 4, 2015
70. ## Chemistry

10. For the titration of 20.00 mL 0.1000 M lactic acid with 0.1000 M NaOH, calculate the pH: a. before any titrant is added b. 10.00 mL prior to the equivalent point c. at the equivalent point d. 10.00 mL after the equivalence point. Plot the points

asked by Rick on June 22, 2014
71. ## Chemistry

Calculate the pH values and draw the titration curve for the titration of 500 mL of 0.010 M acetic acid (pKa 4.76) with 0.010 MKOH. Calculate the pH of the solution after 490 mL of the titrant have been added.

asked by Samantha on February 5, 2017
72. ## CHEMISTRY

If you use a dirty buret, the titrant leaves drops of solution behind as the meniscus descends during delivery of the solution. The volume actually delivered by the buret will be __________ the volume your readings of the buret scale indicate was delivered

asked by Anonymous on October 7, 2014
73. ## Analytical CHM Lab

I am filling out my neutralization titration data sheet and i did not understand how to find buret correction (ml) and corrected volume(ml) and Molarity of NaOH without buret correction and as well as with buret correction. in the lab we have used 50 ml of

asked by Jessy on September 19, 2014
74. ## Chemistry

I don't know how to do Titration problems! I have an emergency homework assignment that's crucial to my grade! Please help with tips and step by step response! Please help!- 1. 50ml of 0.3 M KOH are required to titrate 60 ml of H^2SO^4. What is the M of

asked by Kristen on May 11, 2015
75. ## Calculus

I actually have two questions: 4. An open box is to be made from a rectangular piece of material 3m by 2m by cutting a congruent square from each corner and folding up the sides. What are the dimensions of the box of the largest volume made this way, and

asked by Anonymous on May 18, 2010
76. ## chemistry

calculate the volume of .100 M KOH required to titrate 50 ml of .15 M HCl

asked by jared on May 18, 2010
77. ## Chem

Calculate the volume of 0.128 M HCl solution required to neutralize 2.32 g of Al(OH)3(s)

asked by m on April 4, 2019
78. ## Chemistry

4) Using your initial mass of copper (0.38), calculate the minimum volume of concentrated 12M nitric acid needed to completely react with your copper to form copper (II) nitrate 5) Using your answer from question 4 (2x10^-3 L), calculate the minimum volume

asked by Anonymous on September 22, 2014
79. ## Chemistry

Construct the data chart and the pH curve for the titration of 25 mL of 0.1 M CH3COOH with 0.1M NaOH. Add the titrant 1 mL at a time and calculate the pH after each addition

asked by Jake on April 19, 2011
80. ## Chemistry

Calculate volume of 6MHCL required to prepare a 250 ml of a 0.15MHCL solution??

asked by Karen on April 9, 2013
81. ## chemistry

calculate the volume of .1M HCl that is required to react with 50 mL of .1M ammonia to form a mixture that has pH 9

asked by maycee on October 6, 2010
82. ## Chemistry

Calculate volume of 6MHCL required to prepare a 250 ml of a 0.15MHCL solution??

asked by Karen on April 9, 2013
83. ## chemistry

Determine the volume of the titrant that would effect of neutralization. a.)0.036 L OF 0.98 m HCL titrated with with 0.58 NaOH b.) 24.3 mL of 0.29 M H2SO4 titrated with 0.42 M KOH

asked by Anonymous on October 9, 2011
84. ## Math

Calculate the amount of fluorescein (MW 332.31) you will need to make 10 mL of 15 mM solution in ethanol (EtOH). My answer:0.05 g 2.Using Equation C1V1=C2V2 calculate the volume of stock solution (15 mM) you need to make 1 mL of each working solution

asked by Vivian on January 14, 2017
85. ## chemistry

calculate the volume of oxygen required for cmmplete combution of20cm3 of (C2H2) ethyne

asked by suleiman on January 13, 2019
86. ## Chemistry

Suppose that 30.0 mL of 0.20 M C6H5COOH(aq) is titrated with 0.30 M KOH(aq) (a) What is the initial pH of the 0.20 M C6H5COOH(aq)? (b) What is the pH after the addition of 15.0 mL of 0.30 M KOH(aq)? (c) What volume of 0.30 M KOH(aq) is required to reach

asked by Zell on October 4, 2012
87. ## Chemistry

HNO3 used as a reagent has a specific gravity of 1.42 g/ mL and contains 70% by strength HNO3. Calculate: Volume of acid that contains 60 g pure acid? Volume of water required to make 1 molar solution from 2 mL concentrated HNO3?

asked by Anonymous on August 7, 2014
88. ## chemistry redox titration

calculate the volume of a 0.02M mno4- solution that is required to react completely with 10.0ml of 0.1M c2o4-2

asked by carla on April 8, 2012
89. ## Chemistry

Calculate the amount (volume) of 0.135 M HClO4 solution required to neutralize 57.00 mL of .089 M NaOH

asked by Vicky on October 6, 2012
90. ## chemistry

Calculate the mass of oxygen gas required to occupy a volume of 6 L at a pressure of 20.9 kPa and a temperature of 37◦C.

asked by sara on April 30, 2015
91. ## chemistry

Calculate the volume of oxygen at STP required to burn 3.7 kg C3H6O2 producing CO2 & H2O:

asked by Tyler on September 25, 2013
92. ## Chemistry

A 50.0 mL sample of 0.10 M pyridine, C5H5N, is titrated with 0.2 M HBr. Calculate the pH to one decimal place when the following volumes of titrant have been added. 0.00 mL a) 0ml b)17ml c)25ml d)40ml

asked by Katie on March 7, 2013
93. ## chemistry

Volume of Na2S2O3(aq) required? final burette reading trial1= 45.00 trial2= 44.27 trial3= 45.28 initial burette reading trial1= 0.52 trial2= 1.22 trial3= 2.33 volume of Na2S2O3 used in each trial? average of the two volumes agreeing within 0.10mL? can

asked by Yul on November 16, 2011
94. ## Chemistry

A 25.00mL sample of a household cleaning solution was diluted to 250.0mL in a volumetric flask. A 50.00mL aliquot of this solution required 40.38mL of 0.2506 M HCl to reach a bromocresol green end point. Calculate the weight/volume percentage of NH3 in the

asked by Ellen on March 28, 2012
95. ## physics thermodynamics

A gas expands from a volume of 2.00m^3 to 6.00m^3 and does 6912 joules of work against a constant outside pressure. Calculate this outside pressure in Pa. The answer is 1730 Pa, but I don't know how to get that. I honestly have no idea where to start or

asked by emily on February 11, 2007
96. ## Chem

calculate the volume in ml of 0.250 M silver nitrate solution required to react completely with a 5.00 g piece of copper

asked by No on April 19, 2012
97. ## Chem

calculate the volume in ml of 0.250 M silver nitrate solution required to react completely with a 5.00 g piece of copper

asked by No on April 19, 2012
98. ## Chemistry

Use standards entropies and heats of formation to calculate delta Gf at 25C for a. cadmium (II) chloride (s) b. methyl alcohol, CH3OH (l) c. copper (I) sulfide (s) I really have no idea where to start with this problem. I have no idea how to calculate

asked by Olivia on November 9, 2013
99. ## Redox Titration questions!

Calculate the percent of iron in a 50.0 gram sample containing iron if 45.6 mL of 2.5 M KMnO4 titrant was used. can you solve this?

asked by Yoojin Lee on March 24, 2014
100. ## Chemistry

1.The Volume of oxygen required for the complete combustion of 500ML of ethyne at STP..A)2.00ML B)1.25 C)1.71 D)1.00 2.A Chemical Engineer finds that 250ml CuSO4 reacts with excess NaOH to create 2.37g of precipitate.Calculate the Concentration of

asked by Alex on June 4, 2009