# Calculate the pH of the solute in an aqueous solution of 0.0047 M codeine, if the pKa of itsconjugate acid is 8.21. What is the percentage protonation of the solute?

46,915 questions, page 36
1. ## Chemistry

Exactly 100 mL of 0.14 M nitrous acid (HNO2) are titrated with a 0.14 M NaOH solution. Calculate the pH for the following. (a) the initial solution (b) the point at which 80 mL of the base has been added (c) the equivalence point (d) the point at which 105

asked by Tanya on March 17, 2012
2. ## College Chemistry

an iron ore sample was dissolved in Hydrochloric acid the iron was obtained as Fe2+. The solution was titrated with 41.08 mL of a 0.458 M solution of Ce+. Calculate the mass of iron in the original ore sample.

asked by Laura on October 16, 2010
3. ## Chemistry (check)

Not sure if these are right 1) What is the Molar Enthalpy of Neutralization (ΔHn) in kJ/mol if 5.00 moles of HCl(aq) (acid) neutralized 5.00 moles of NaOH(aq) (base) and released 13093 J of heat? 13093/5= 2618.6 then convert to kj 2) Calculate the Molar

asked by Mary on June 30, 2013
4. ## Chem

You've just prepared a solution by transferring 20.0 g of glucose into a 1.0 - L volumetric flask, and adding water to the mark. Calculate the concentration of the glucose solution in terms of millimoles/Liter, mg/mL, and % (m/v). Ok, I think i'm

asked by Britt on September 7, 2009
5. ## Acids and Bases

NaOH was added to 1.0 L of HI(aq) 0.40 M. Calculate H3O in the solution after the addition of .14 mol of NaOH. Calculate H3O in the solution after the addition of 0.91 mol of NaOH.

asked by Kaitlyn on March 23, 2011
6. ## Math

A 12% solution and a 24% solution are to be mixed to create 80 mL of a 16% solution. How much of each should be used? Is the correct answer 53 1/3 L of the 12% solution and 26 2.3 of the 24% solution?

asked by Alyonka on February 12, 2013
7. ## science (chem)

Aiieeee! Todays lab...good grief. I was supposed to dissolve 0.3g of impure sulfanilamide in enough ethyl alchohol (95%) and me and my partner did the lab together...sort of. She went and weighed 0.301g of impure sulfanilamide. Then she put some ethanol in

asked by ~christina~ on September 4, 2007
8. ## chemistry

what are the solute particles present in boric acid (H3BO3)?

9. ## chemistry

How many grams of solute are present in 785 mL of 0.480 M KBr?

asked by Kate on March 29, 2012
10. ## science

if you had 2.00 moles of solute dissolved into 1.00 of solvent.whats the molality?

asked by angela on September 15, 2008
11. ## chemistry

Why does a solute dissolve faster in hot water than cold?

asked by Michelle on March 29, 2009
12. ## chemistry

Whats the solvent and solute in water vapor in air?

asked by ying on February 25, 2010
13. ## Chemistry II

What is the process that occurs when solvent molecules surround a solute?

asked by Lindsay on September 9, 2009
14. ## Chemistry

Why is a small amount of solute added in the electrolysis of water?

asked by Chemo on March 12, 2012
15. ## chemistry

how many moles of solute is present in 40.0mL of 1.000 M of HNO3

asked by Lauren on September 14, 2010
16. ## anatomy/biology

what substance passes through a cell membrane using a solute pump?

asked by julie on September 10, 2009
17. ## chemistry

Mass (g) of solute in 179.8 mL of 0.267 M calcium acetate

asked by Anonymous on October 7, 2014
18. ## Chemistry

How many grams of solute are present in 875 mL of 0.180 M KBr?

asked by Katie on February 20, 2013
19. ## Chemistry

How many grams of solute are present in 795 ml of 0.130m KBr?

asked by Ray on May 4, 2016
20. ## Chemistry

What is the solute-solvent interaction between silver nitrate in water?

asked by Someone on November 11, 2016
21. ## Chemistry II

When dissolved in water, ammonium phosphate would have a value of __________ for i solute.

asked by Lindsay on September 9, 2009
22. ## Chemistry

If you are making 230.0 mL of 2.70% (m/m) CuSO45 H2O, how many grams of the solute should you use?

23. ## chemistry

Molality is a unit of concentration that measures the moles of solute per

asked by destiny on March 12, 2014
24. ## College: Chem 1

What would be the molar concentration of the solute in each of the following solutions? a. 0.50 L containing 38.6 g of NaClO4 b. 0.25 L containing 41.5 g of C4H8O

asked by Anonymous on October 8, 2013
25. ## chemistry

How many grams of solute are present in 205 mL of .340 M KBr?

asked by Jason on November 22, 2010
26. ## chemistry

2L of 2M solute of HCI must be diluted to an 1M concentration. What will the final volume be after ?

asked by denice on July 30, 2010
27. ## chemistry

how many grams of solute are in 135 mL of 0.100 M potassium bromide

asked by Anonymous on March 4, 2010
28. ## Biochemistry

Can someone help me calculate protein concentration using the Bradford Assay? If you could show me how to do tube 2, that'd be great. Tube 1: 0 ul Protein Stock Solution, 800 ul Water, 0 ug Protein, Absorbance @595nm = 0 Tube 2: 10 ul Protein Stock

asked by OR on October 7, 2013
29. ## chemistry

A student prepares a solution of hydrochloric acid that is approximately 0.1 M and wanted to determine its precise concentration. A 25.00 mL portion of the HCl solution is transferred to a flask, and after a few drops of indicator are added, the HCl

asked by walter on June 14, 2015
30. ## Chemistry

A solution is prepared by mixing 0.12 L of 0.12 M sodium chloride with 0.22L of a 0.19M MgCl2 solution.What volume of a 0.22 M silver nitrate solution is required to precipitate all the Cl- ion in the solution as AgCl ?

asked by Abril on March 13, 2010
31. ## medicine

What is final concentration of a mixed solution combining 50ml of 20% solution, 150 ml of a 15% solution and 200 ml of a 35% solution?

asked by Lisa on July 20, 2010
32. ## Chemistry

If solution A had a pH of 8, and solution B had 1,000 times this hydrogen ion concentration what would be the pH of solution B, and would solution B be acidic or basic?

asked by Kristin on November 14, 2011
33. ## Science

Three acids solutions have the following pH: Solution A: pH = 2 Solution B: pH = 5 Solution C: pH = 3 Which solution is made with the acid that has the smallest ionization constant?

asked by Megan on June 30, 2011
34. ## chemistry

Help with Beer's Law lab experiment question! So we were told to calculate the concentration of 5 standard solutions but I don't know how to do that exactly. The Concentration of the solution in flask B was .0024 M and our lambda max (max absorption) was

asked by Anonymous on September 6, 2010
35. ## Chemistry

At a certain temperature the vapor pressure of pure benzene is measured to be 322. torr . Suppose a solution is prepared by mixing 138.g of benzene and 91.2g of heptane . Calculate the partial pressure of benzene vapor above this solution. 3 sig figs!

asked by Elizabeth L. on April 11, 2012
36. ## chemistry

calculate the molarity of a g NaCl in 250 ml solution.

asked by Zach on November 25, 2014
37. ## chemistry

Calculate the pH of a 0.063 M (C2H5)2NH solution (Kb = 1.3 10-3).

asked by melissa on November 24, 2011
38. ## chemistry

Calculate the pH after 0.15 mol of NaOH is added to 1.00 L of the solution that is 0.50 M HF and 1.01 M KF

asked by kyle on March 25, 2011
39. ## General chemistry

Calculate the molarity of 500.0 ml solution containing 26.5g Na2CO3

asked by Chin on January 23, 2017
40. ## Chemistry help plz

How to calculate the hydronuim ion cencentration of solution with a pH of 2.5?

asked by Tarkan on December 23, 2010
41. ## Chemistry

calculate [H] and [OH] for a .01M calcium hydroxide solution?

asked by Morgan on May 20, 2012
42. ## chemistry

Calculate the pH of a saturated solution of Sr(OH)2. The Ksp for Sr(OH)2 is 3.2x10^-4.

asked by Aly on February 15, 2015
43. ## chemistry

The pH of a solution is measured to be 5.4. Calculate the following: a) [H3O^+] b)pOH c)[OH^-]

asked by Jay on June 28, 2010
44. ## Chemistry

Calculate the pH of a 0.053 M (C2H5)2NH solution (Kb = 1.3 10-3).

asked by Kaleen on November 23, 2011
45. ## Chemistry

Calculate the concentration of all species in a 0.240 solution.

asked by Anonymous on March 27, 2012
46. ## chemistry

Calculate the molarity of each of the following solutions. 1. 61.9 g of C2H6O in 3.4 L of solution

asked by Abby on March 9, 2011
47. ## chemistry

calculate the % m/m concentration of 2g sugar in 80g solution

asked by faye on November 26, 2010
48. ## Chemistry

Calculate the mass percent of a solution containing 10.5 of and 91.5 of H2O.

asked by Dax on November 24, 2012
49. ## chemistry

Calculate the pH of a 0.87 M NaCN solution. Solve it exactly (no assume x=0.1)

asked by Justin on March 20, 2012
50. ## Chemistry

Calculate the concentration of OH¯ ions in a 1.4*10^-3 M HCl solution

asked by Sara on February 15, 2011
51. ## Chemistry

Calculate the pH of a buffer solution that contains 0.60 M NaH2PO4, and 0.26 M Na2HPO4.

52. ## chemistry

Calculate the pH of a 0.35 M solution of dimethylamine, (CH3)2NH.

asked by donna on December 7, 2009
53. ## Science

calculate the solubility of NaCl in a solution which contains 0.1 M CaCl2

asked by Tejpal Chandrakar on October 12, 2012
54. ## chemistry

Calculate the hydroxide ion concentration of a solution with pH = 8.25.

asked by Ciaria on March 11, 2015
55. ## Science

Calculate the molarity of 10 % HNO3 (w/w) solution if its density is 2.0 g/cc at 25° C.

asked by satyam kar on October 2, 2016
56. ## chemistry

im so confused about this question Calculate the pH of a solution that has [H3O+] = 5.5 x 10-3.

asked by joe on April 29, 2013
57. ## CHEMISTRY

CALCULATE THE MOLARITY OF 50.0g OF NaCL IN 7820mL OF SOLUTION

58. ## Chemistry 151

Calculate the concentration in g/dm3 of HNO3 in solution A. (H=1; N=14; O=16; Na=23)

asked by Esther on April 10, 2017
59. ## ap chemistry

Calculate the ratio of [NH3]/[NH4+] that gives a solution of pH = 10.60.

asked by gabriella on February 4, 2014
60. ## Ap chem-Bases

Calculate the pH of a 0.2M solution of Triethylamine, (C2H5)3N, with a Kb of 4.0x10^-4

asked by Jessica on February 17, 2014
61. ## Chemistry

A 0.39 M solution of a weak acid is 3.0% dissociated. Calculate Ka.

asked by Kaleen on November 23, 2011
62. ## Chemistry

A solution of NH3 in water has a pH of 11.17. Calculate it's molarity

asked by Rita on October 18, 2015
63. ## science

Calculate pH of 0.01 M CH3COONa solution if pKa of CH3COOH is 4.74.

asked by kartikaya on January 7, 2013
64. ## chemistry

Calculate the molarity of 2.05 L of a solution containing 1.51 g of dissolved KBr

asked by jessica on February 9, 2012
65. ## Chemistry

Calculate the [H], [OH], pH and the pOH of this solution; 0.0025 M NaOH

asked by Shane on June 19, 2013
66. ## Chemistry

Calculate the molarity of 17.g of NaCl in 881 ml of solution

asked by Alexa on April 13, 2014
67. ## Chemistry

Calculate the[OH-] of a solution of 0.1861M CH3CH2CH2NH3CL if Kb= 5.1*10-4 for CH3CH2CH2NH2

asked by Jude on April 16, 2011
68. ## Chemistry

Calculate [H3O] for a solution of hydrochloric acid that is: pH=2.00 pH=3.00

asked by Gayla on April 26, 2009
69. ## Ap chem-Bases

Calculate the pH of a 0.2M solution of Triethylamine, (C2H5)3N, with a Kb of 4.0x10^-4

asked by Jessica on February 16, 2014
70. ## chemistry

1)Calculate the pH of a 0.10 M NaHX salt solution. Ka (H2X) = 2.1 x 10-2 Ka (HX-) = 4.5 x 10-8 2)Calculate the pH of a 0.10 M NaHX salt solution. Ka (H2X) = 5.3 x 10-5 Ka (HX-) = 5.3 x 10-11

asked by yahn on October 21, 2011
71. ## chemistry

Calculate the pH of a solution containing 10 g / L of NH4Cl (Kb NH3 = 1.8x10-5

asked by Anonymous on July 5, 2016
72. ## Chemistry

Calculate the molarity of 15.4 g of ethanol (C12H22O11) in 71.0 mL of solution

asked by Kiana on February 27, 2011
73. ## chemistry

Calculate the molality of a 10% H3PO4 solution in water.

asked by Keva on October 11, 2011
74. ## Chemistry

Calculate the pH of a solution that is 2.00 M HF, 1.00 M NaOH, and 0.704 M NaF. (Ka = 7.2 E -4)

asked by Schanee on December 17, 2008
75. ## chemistry

these is 0.1M HCl of 100ml of that solution in a beaker,calculate pH?

asked by kabelo on February 12, 2011
76. ## AP Chemistry

calculate the ph of a 0.10 M CoCl3 solution. The ka value for Co(H20)6 is 1.0x10^-5

asked by Anonymous on February 25, 2010
77. ## chemistry

Calculate the pH of a 0.10 M NaHX salt solution. Ka (H2X) = 2.1 x 10-2 Ka (HX-) = 7.3 x 10-8 Calculate the pH of a 0.10 M NaHX salt solution. Ka (H2X) = 9 x 10-5 Ka (HX-) = 5.3 x 10-11

asked by Anonymous on March 11, 2012
78. ## Chemistry

What is the osmolality of 1.1% NaCl salt solution? How can I calculate this?

asked by Mirza on April 27, 2016
79. ## chemistry

calculate the concentration of ammonium nitrate solution.

asked by Anonymous on August 17, 2014
80. ## chemistry

Calculate the pH of a 2.5x10-5 M lithium hydroxide solution.

asked by Liz on May 2, 2012
81. ## chemistry

Calculate the H3O^+ and OH^- ion concentrations in a solution that has a pH of 3.72.

asked by Maria on February 26, 2011
82. ## chemistry 12u

how do i calculate this.. a solution of nitrous acid has a pH of 2.73 what is the [H3O+] ?

asked by julie on May 10, 2016
83. ## chemistry

I am doing a home lab experiment about acid-base neutralization. I just need a little help to see if I am doing it correctly. I completed the experiment and recorded the data. We were to add 25 ml of vinegar and the 1 ml of cabbage indicator, the add i ml

asked by Lynn on March 6, 2010
84. ## Chemistry

7.5 g of a solid are added to 87.6g of water at 23.7 degrees C. When the solid has all been dissolved and thoroughly mixed with the water, the temperature of the solution is decreased by 6.2 degrees C. Calculate the heat of the solution in joules per gram

asked by Anonymous on July 15, 2008
85. ## chemistry HELP

a flask containing 50ml of 0.128M sodium acetate is titrated with 0.138M nitric acid. Calculate the initial ph of the acetate solution and calculate the ph after the addition of 24.9ml of nitric acid. pKa for acetate 4.757

asked by amy on April 27, 2017
86. ## Chemistry

A 0.1873 g sample of a pure, solid acid, H2X was dissolved in water and titrated with 0.1052 M NaOH solution. The balanced equation for the neutralization reaction occurring is H2X(aq) + 2NaOH(aq) ¨ Na2X(aq) + 2H2O(l) If the molar mass of H2X is 85.00

asked by Lauren on May 11, 2011
87. ## Chemistry

When a concentrated NaCl aqueous solution is electrolyzed, what is the reason for the stabality of the products to be lesser stable as of thermodynamically, with respect to the reactants? Is it because the products are gasses? H20(l) +4e--->H2(g) +

asked by Shenaya on June 19, 2017
88. ## chemistry

hello, I have done a acid & base titration lab, with 0.1M vinegar (with unknown %tage acid) and 0.1 NaOH...I think the result came out ok, in avg, 25.21mL of NaOH have titrated w/ 30.0mL unknown %tage acid of vinegar. all I am given is Density of vinegar=

asked by J Kang on May 28, 2008
89. ## Chemistry

Calculate the pH after 0.016 mole of NaOH is added to 1.05 L of a solution consisting of 0.138 M HONH2 and 0.127 M HONH3Cl, and calculate the pH after 0.016 mole of HCl is added to 1.05 L of the same solution of HONH2 and HONH3Cl. (Assume that all

asked by Margaret on March 13, 2013
90. ## Chemistry

In aqueous solution, hypobromite ion, BrO-, reacts to produce bromate ion, BrO3 -, and bromide ion, Br-, according to the following chemical equation. 3BrO-(ag) → BrO3 -(ag)+2Br-(ag) A plot of 1/[BrO-] vs. time is linear and the slope is equal to 0.056

asked by Jason on February 19, 2011
91. ## Chemistry lab

A 1.340gram sample of an unknown acid, H3A, was placed in a 250.0 mL volumetric flask and diluted to volume with water. A 45.35 mL sample of this acid solution was titrated with 37.77 mL of a 0.1006M NaOH solution. A) Using one set - up dimensional

asked by Stacy on March 22, 2016
92. ## Chemistry

A zinc-copper battery is constructed as follows. Zn | Zn2+ (0.70 M) || Cu2+ (2.30 M) | Cu The mass of each electrode is 200. g. (a) Calculate the cell potential when this battery is first connected. 1 V (b) Calculate the cell potential after 10.0 A of

asked by Amy on March 29, 2009

A. lower than the freezing point of the solvent alone because higher temperature is required to accelerate solvent molecular motion enough to overcome obstructon by solute particles.. B. higher than the freezing point of the solvent alone because higher

asked by phys on April 1, 2010
94. ## ALGEBRA

A chemist is asked to make 10 liters of a a35% solution. She has only a 10% solution and a 50% solution to work with. how much of each solution must she mix to ge 10 liters of the 35% solution?

asked by jackie on January 28, 2012
95. ## Chemistry

A solution is prepared by dissolving 25.0 g of pure HC2H3O2 and 25.0 g of NaC2H3O2 in 700 mL of solution (the final volume). (a) What is the pH of the solution? (b) What would the pH of the solution be if 65.0 mL of 0.650 M NaOH were added? (c) What would

asked by Dean on February 21, 2015
96. ## chemistry

to find the molarity of an aqueous solution of an ionic solid what do you need to know? a... mass of solid, formula of solid, volume of water b...moles of solid, formula of solid, volume of water c....mass of solid, formula of solid, volume of solution

asked by Anna on November 30, 2010
97. ## science

solution A was prepared by dissolving 0.63g of HNO3 in 100cm3 solution. Solution B is a sodium calcium hydroxide solution of unknown concentration. state a balanced chemical equation for the reaction

asked by Zoe on August 25, 2015
98. ## CHEM

am lost. I have to create a buffer using NH4CL and 0.10 M NH3. I have to chose how much of the reagent to use in order to get a concentration between 0.01 and .5 M. Then after I come up with the recipe for that I have to calculate the pH based on the

asked by Erica on April 5, 2016
99. ## Chemistry

An aqueous solution of ammonium nitrite decomposes when heated to give off nitogen gas and water. This reaction can be used to prepare pure nitrogen gas. How many grams of ammonium nitrite must have reacted if 3.75 liters of nitrogen gas was colleced over

asked by Anonymous on October 20, 2014
100. ## chemistry

Calculate the pH from the addition of 10 mL of a 0.10 M NaOH solution to 90 mL of 0.10 M HCl. okay so i understand how to do most of it but i get messed up at one part.. so i made my equation: NaOH + HCl -> H2O + NaCl (strong base, strong acid= complete