# 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 69
1. ## Chemistry

Posted by Hannah on Saturday, April 18, 2009 at 3:05pm. Find the pH of a 0.010M solution of NH4ClO4 and the pH of a 0.010M solution of NH4C2H3O2. Responses * chemistry - Anonymous, Saturday, April 18, 2009 at 3:36pm after finding the ph of the

asked by Anonymous on April 18, 2009
2. ## Chemistry

A chemist dissolves 0.095 g of CuSO4 · 5H2O in water and dilutes the solution to the mark in a 500-mL volumetric flask. A 39.7-mL sample of this solution is then transferred to a second 500-mL volumetric flask and diluted. What is the molarity of CuSO4 in

asked by Neftali on March 23, 2013
3. ## Chemistry, Math

A chemist dissolves 0.091 g of CuSO4 · 5 H2O in water and dilutes the solution to the mark in a 500-mL volumetric flask. A 31.8-mL sample of this solution is then transferred to a second 500-mL volumetric flask and diluted. What is the molarity of CuSO4

asked by Ethan Boersig on February 21, 2019
4. ## Chemistry

Hydrogen peroxide solution, H2O2(aq), is available with a concentration of 1.667mol/L. When diluted to a concentration of 0.25mol/L, the solution is used as a disinfectant. What volume of water should be added to 100 mL of the concentrated hydrogen

asked by Lori on February 21, 2013
5. ## chemistry

You extract the iron from a tablet and dilute that to 600.0 ml in a volumetric flask. You transfer 0.600 ml of this solution to a 75.0 ml volumetric flask and dilute this to volume. When you measure the concentration of this solution, you find that it is

asked by leigh on March 28, 2012
6. ## achem

1L of a .2M solution of butanoic acid is altered by adding 5.00g of sodium butanoate. what is the pH of the new solution?

asked by Lana on April 8, 2013
7. ## Chemistry

why do crystals from in solutions once removed from the heat e.g. copper sulphate solution or a alum solution

asked by Dhara on November 11, 2007
8. ## chemistry

If you dilute 27.0$${\rm mL}$$ of the stock solution to a final volume of 0.460$${\rm L}$$ , what will be the concentration of the diluted solution?

asked by hilllary on July 18, 2013
9. ## Chemistry

If 38.33 mL of a standard 0.1667 M Ba(OH)2 solution is required to neutralize exactly 52 mL of H2SO4, what is the molarity of the acid solution?

asked by Beatriz on February 12, 2012
10. ## chemistry

What is the quantity of material of NH4Cl that should be added to a solution 0.1 of NH3 to form 1L of a solution with ph 8? Kb = 1, 8x10 ^-5

asked by william on June 5, 2018
11. ## Chemistry

True or False? A solution made from NaCl and HCl will act as a buffer solution.

asked by Heather on June 2, 2010
12. ## chemistry

how many millimeters of a 2.0M NaOH solution are needed to neutralize 20.0ml of a 2.5M CH3COOH solution? How do I figure this out?

asked by Anonymous on October 9, 2011
13. ## Chemistry

What is the molarity of a sucrose solution that contains 76.7 g of C12H22O11 (342.34 g/mol) dissolved in 138.2 mL of solution

asked by Linzy on April 8, 2013
14. ## pharmacy tech.

In what proportion should you combine a 2:5 soaking solution and distilled water to create a 300 ml of a 1:20 solution?

asked by blackpearl07 on August 5, 2012
15. ## dav

determine the concentrated of mohrs salt solution with the help of supplied n/10 kmno4 solution preparred?

asked by rohit on May 4, 2011
16. ## precalculus

Find all solutions of the system of equations. (If there is no solution, enter NO SOLUTION.) 4x^2− 27y^3 = 35 8x^2+54y^3= 74

asked by amaa on December 1, 2012
17. ## Chemistry

Please sir solve this... 6.3 gm of oxalic acid (eq. Wt.=63) is dissolved in 500 ml solution what will be the normality of the solution?

18. ## Math

solve using the substitution method. If the system has no solution or infinite number of solution state this 4x+4y=-36 4x+4y=12

asked by Tammy on February 16, 2011
19. ## Chem II

Find the a) % solution, b) molality and c) mole fraction of the acid 16.0 M H2SO4 d = 1.634 g/ml for the solution

asked by Ken on February 5, 2008
20. ## Chemistry

If you dilute 19.0 mL of the stock solution to a final volume of 0.350 L , what will be the concentration of the diluted solution?

asked by Victoria on November 14, 2017
21. ## Chemistry

Hi, can you help me with this question: "you have 25.00 mL of a 0.1000 M sugar solution. How much water must be added to make a 0.025 M solution? Thank you.

asked by Cassandra on March 29, 2015
22. ## College Chem

I need to be able to describe how to prepare 20 mL of a 0.0050 M KIO3 solution from a stock solution with a concentration of 0.020 M.

asked by Kelli on October 3, 2010
23. ## chemistry

In what proportion should you combine a 2:5 soaking solution and distilled water to create a 300 ml of a 1:20 solution

asked by Kill on July 21, 2014
24. ## chemistry

when 0.50 L of a 1.0 M solution of Pb (No3)2 is mixed with 0.50 L of a 1.0 M solution of KI, how many moles of lead (III) iodide are formed?

asked by strid on May 27, 2010
25. ## algerbra

Identify the solution(s) of the system of equations, if any. -4x - 4y = 4 12y = -12x - 12 no solution (0, -1) (-1, 0) infinitely many solutions

asked by robert on September 8, 2014
26. ## Chemistry

What volume (in mL) of 0.55 M Na2SO4 solution is needed to precipitate all the barium, as BaSO4(s), from 15.5 mL of 0.25 M Ba(NO3)2 solution?

asked by john on April 16, 2015
27. ## Chemistry

A beaker contains 50.0 mL of 0.952 M solution of a diprotic acid. How many grams of Mg(OH)2 are required to neutralize this solution?

asked by Monica on June 12, 2010
28. ## chemistry

Suppose you wanted to dissolve 40.0 g of NaOH in enough H20 to make 6.00 L of solution and what is the molarity of the solution?

asked by Servando on February 22, 2011
29. ## Algebra

To reduce 32 grams of a 25% solution of antiseptic to a 10% solution, how much distilled water should a pharmacist add?

asked by Chelsea on March 2, 2010
30. ## chemistry

269 mL of a 0.2089 M sodium carbonate (Na2CO3) solution is prepared and labelled "Solution A".

asked by B on March 22, 2015
31. ## chemistry

In what proportion should you combine a 2:5 soaking solution and distilled water to create a 300 ml of a 1:20 solution?

asked by Kill on July 21, 2014
32. ## chemistry

In what proportion should you combine a 2:5 soaking solution and distilled water to create a 300 ml of a 1:20 solution?

asked by cham on July 21, 2014
33. ## chemistry

At 20°C, a solution contains 120 g of NaNO3 in 100 g of water. Is this solution saturated, unsaturated, or supersaturated?

asked by rocky on July 14, 2011
34. ## chemistry

What will happen if ammonium chloride solution is used to standardize the potassium tetraoxomangate(vii)solution?

asked by Stephen on May 20, 2017
35. ## chemistry

What is the pH of a solution prepared by dissolving 12.2 g of benzoic acid in enough water to produce a 500 mL solution?

asked by Andrea on May 13, 2012
36. ## chemistry

I also have a question on making oxalic acid solution. What is the appearance of the solution should be? including transparency?

asked by blast on July 1, 2011
37. ## chemistry

A 0.100 m K2SO4 solution has a freezing point of -0.43°C. What is the van't Hoff factor for this solution? Kf = 1.86°C/m

asked by Anonymous on February 5, 2012
38. ## chemistry

A beaker contains 50.0 mL pf 0.953 M solution of a diprotic acid. How many grams of Mg(OH)2 are required to neutralize this solution?

asked by Monica on June 12, 2010
39. ## chemistry

If you were given an unknown solution, write the steps that would be needed to prove that a solution contained phosphate.

asked by AJ on January 5, 2011
40. ## algebra

Solve the inequality graph the solution set 26+6b>2(3b+4) answers are all real numbers, b1 1/2,, no solution

asked by toby on February 22, 2014
41. ## algebra

Solve the inequality graph the solution set 26+6b>2(3b+4) answers are all real numbers, b1 1/2,, no solution

asked by toby on February 22, 2014
42. ## chemistry

1L of a .2M solution of Ethanoic acid is altered by adding 5.00g of sodium butanoate. what is the pH of the new solution

asked by Lana on April 8, 2013
43. ## chemistry

200 ml of h2o is added to 400ml (m/10) of hcl solution. Find the pH of final solution?

asked by pinku kr on March 25, 2015
44. ## Chemistry

Determine the pH of a solution made by diluting 25mL of 6.0 M HCl until the final volume of the solution is 1.75 L

asked by Dylan on April 21, 2016
45. ## Biochem

What is the pH and pOH a solution that was made by adding 400 mL of water to 350 mL of 5.0 x 10^-3 M NaOH solution?

asked by Max on September 2, 2011
46. ## chemistry

I also have a question on making oxalic acid solution. What is the appearance of the solution should be? including transparency?

asked by blast on July 1, 2011
47. ## Engineering

For what values of (¢ belongs to R) the following system of equations has (1)no solution (2)a unique solution (3)infinitely many solutions? (5-¢)x+4y+2z=4 4x+(5-¢)y+2z=4 2x+2y+(2-¢)z=2

asked by Edward on August 2, 2015
48. ## AP Chemistry- Acids

What is the pH of a solution obtained by adding 145mL of 0.575M HCl to 493mL of a HNO3 solution with a pH of 1.39?

asked by franny on February 12, 2014
49. ## Chemistry- Dr.Bob222

Determine [H30+], [OH-], and pH. A solution that is 0.655% HNO3 by mass (assume a density of 1.01 g/ mL for the solution).

asked by Nevaeh on April 20, 2016
50. ## Chemistry

what would be the molarity of a KOH solution if 15 mL of the solution required 22.3 mL of 0.085 M HCl to react with the base?

asked by Anonymous on March 15, 2011
51. ## Science

what is the molarity of a solution made by dissolving 7.5 g of magnesium nitrate in enough water to make 25.o mL of solution

asked by Matt on June 1, 2010
52. ## chemistry

What is the molarity of a solution prepared by dissolving 8.5 g NaCl in enough H2O to give 600 ml of solution?

asked by mica on October 27, 2010
53. ## chemistry

what is the molarity of a solution prepared by dissolving 63.0 g NaF in enough water to make 250.0 mL of solution?

asked by Gloria on October 16, 2012
54. ## Chemistry

The pH of a solution is 11.30. In order to find the concentration of H+, wouldn't I simply take the pH of the solution and plug it into the formula 10^-pH?

asked by Anonymous on September 16, 2009
55. ## Chemistry

How many millimeters of this solution should be diluted with water to produce 650 mL of a solution with pH= 11.50? 6.8% ammonia (d= 0.97g/ml)

asked by Raj on February 14, 2009
56. ## Chem

How many moles of NaOH would you need to add to 800 ml of a 0.4 M H2CO3 solution in order to bring the pH of the solution to 10.5?

asked by Roger on February 6, 2011
57. ## mcckc.edu

A 0.10MNaCl solution is blank (iso/hypo/hypertonic) to a 0.10M glucose solution

asked by paulina on January 29, 2011
58. ## Chem

How many moles of NaOH would you need to add to 800 ml of a 0.4 M H2CO3 solution in order to bring the pH of the solution to 10.5?

asked by Roger on February 6, 2011
59. ## chemistry

A solution contains 0.100 mg of NaOH dissolved in enough water to make 10.0 L of solution. whats the concentration

asked by byu on November 2, 2016
60. ## chemistry

if 24.25 mL of a standard M NaOH solution is required to neutralize 26.00 mL of H2SO4, what is the molarity of the acid solution?

asked by james on November 3, 2008
61. ## Math

determine weather 10 is the solution of the equation x+10=36 is 10 the solution no use multiplcation principle 10x=-90 -9 3[7-9{6-2)]= -87 find -x when x=-62/83*= 62/83

62. ## Math

determine weather 10 is the solution of the equation x+10=36 is 10 the solution no use multiplcation principle 10x=-90 -9 3[7-9{6-2)]= -87 find -x when x=-62/83*= 62/83

63. ## Math

determine weather 10 is the solution of the equation x+10=36 is 10 the solution no use multiplcation principle 10x=-90 -9 3[7-9{6-2)]= -87 find -x when x=-62/83*= 62/83

64. ## chemistry

What is the molarity of a saline solution that contains 0.900 g NaCl (58.44 g/mol) dissolved in 100.0 ml of a solution?

65. ## chemistry

What is the pH of a solution if 100.0 mL of the solution is 0.23 M with respect to acetic acid and contains 1.71 g of sodium acetate, NaCH3CO2?

asked by Sam on March 18, 2012
66. ## ap chemistry

If 4.50 g of (NH4)2SO4 is dissolved in enough water to form 250. mL of solution, what is the molarity of the solution?

asked by mary on September 29, 2010
67. ## chemistry

a solution is prepared by dissolving 02.50 mole of Ba(OH)2 in enough water to get 4.00 L of solution. What are the OH- and H3O+ molar concentrations?

asked by tara on July 28, 2011
68. ## chemistry

What is the volume of solution prepared when 6g of acetic acid is dissolved to prepare 0.25M solution

69. ## Biochemistry

A buffer solution is prepared by mixing 80.0 mL of 0.20 M NaH2PO4 and 120.0 mL of 0.20 M Na2HPO4.What is the pH of the resulting solution?

asked by Ella on December 2, 2018
70. ## Chemistry

Consider a 0.70 M solution of Al(NO3)3 in water. What is the nitrate ion concentration in this solution, in units of moles/L?

asked by Diana on September 8, 2010
71. ## Chemistry

The density of a 22.0% by mass ethylene glycol (C2 H6 O2) solution in water is 1.03 .Find the molarity of the solution.

72. ## chemistry

Consider a 0.70 M solution of Al(NO3)3 in water. What is the nitrate ion concentration in this solution, in units of moles/L?

asked by Susy on September 7, 2010
73. ## Chemistry

If 3.5 mL of distilled water is added to 1.5 mL of 0.280 M CoCl2 solution, what is the concentration of the resulting solution

asked by Tashawna on June 23, 2011
74. ## Chemistry

To what volume should you dilute 25mL of a 12.0M H2SO4 solution to obtain a 0.170M H2S04 solution?

asked by Candice on September 29, 2010
75. ## chemistry

if I dilute 250 of mL of 2.4 M lithium hydroxide solution so that it's new volume is 750 mL, what is the concentration of the solution?

asked by Emma on February 20, 2014
76. ## Chemistry

A solution of acetic acid, CH3COOH, has a concentration of 0.218 M and a density of 1.00 g mL-1. What is the molality of this solution?

asked by Luke on July 14, 2014
77. ## Chemistry-Confused!!

You have 10mL of a 1.0 M Ba(OH)2 solution and add it to 2.5L of water. What is the concentration of hydroxide ions in the diluted Ba(OH)2 solution?

78. ## Chemistry

When Zn(OH)2(s) was added to 1.00 L of a basic solution, 1.24×10−2 mol of the solid dissolved. What is the concentration of OH− in the final solution?

asked by Amber on October 29, 2015
79. ## chemistry

The reasons why copper dissolves in AgNO3 solution but remain insoluble in Pb(No3)2 solution.help me.thank you

asked by gbemisola on November 17, 2011
80. ## Algebra 2

What is the solution for the determinant? |1 7 | |0 -3| How do you find the solution? I'm probably going to feel really stupid because it's probably simple but I'm just having some problems. Okay, a lot.

asked by Nikki on July 17, 2017
81. ## chemistry

A solution of acetic acid, CH3COOH, has a concentration of 0.201 M and a density of 1.00 g mL-1. What is the molality of this solution?

asked by austin on December 7, 2010
82. ## Chemistry

if 5.00 ml of 1.66x10^-1 M HCl solution is diluted to exactly 250.0 ml with water, what is the concentration of the resulting solution?

asked by Alex on November 16, 2014
83. ## chemistry

if i wanted to disolve 106 g of Na2CO3 in enough h20 to make 6.00 L of solution....what is the molarity of this solution?

asked by lynda smith on November 16, 2009
84. ## chemistry

If 40 mL of a 6 {\rm M} \;{\rm NaOH} solution is diluted to a final volume of 200 mL, what is the resulting concentration of the solution?

asked by warla on December 6, 2010
85. ## Chemistry

What volume of a 0.125 M solution of NaOH is needed to neutralize 25.0 mL of a 0.285 M solution of HCL

asked by Beth on April 23, 2018
86. ## Chemistry

You know the solution forms a precipitate when? (A) when it changes color (B) when you can’t see through it (C) because it bubbles (D) you have stirred it for more than 5 minutes (E) the solution thickens

asked by Ivy on December 7, 2010
87. ## math

solve by the substitution method 3x + 6y = 27 -2x + y = 12 what is the solution of the system..(type an ordered pair, or N if there is no solution) has to be like (3,5)please help me

asked by mikey123 on November 8, 2008
88. ## Chemistry-Help!!

If I have 10mL of 1.0 M Ba(OH)2 solution and add it to 2.5L of water. What is the concentration of hydroxide ions in the diluted Ba(OH)2 solution?

89. ## Maths

Find the particular solution of the differential equation from: dy/dx = 2/27(x-3)ã(x^2-6x+23) / (y) (y>0. For which y=2 when x =1, and then give this particular solution in explicit form. regards Claire

asked by Claire on April 6, 2011
90. ## science

6.025*10^20 molecules of acetic acid are present in 500 ml of its solution .What is the concentration of the solution?

asked by Kanchan on July 14, 2016
91. ## chemistry

3. What is the ka for a solution of choloracetic acid (C2H5ClO2) which has a pH of 1.52 in a 0.112M solution? Please reply me as soon as possible sir Thank you George.

asked by George on June 15, 2010
92. ## chemistry

how can I find the Liters of solution. the solution is salt (NaCl) mixed in water (H20) ?

asked by kezinch on March 25, 2013
93. ## chemistry

what is the PH of a solution prepared by adding enough water to 15.00g of NaNO2 to make 275ml of solution

asked by Chuck on April 15, 2008
94. ## Chemistry

a 0.250 mol sample of HX is dissolved in enough water to form 655mL of solution. If the pH of the solution is 3.44, what is the Ka of HX.

asked by ken on March 19, 2012
95. ## Applied chem

What is the molality of a 30.0% by mass hydrochloric acid solution ? The density of the solution is 1.0980g/mol.

asked by Trish on October 30, 2016
96. ## math

solve by the substitution method 3x + 6y = 27 -2x + y = 12 what is the solution of the system..(type an ordered pair, or N if there is no solution)

asked by mikey123 on November 7, 2008
97. ## Chemistry

What volume in milliters of calcium chloride stock solution would you use to make .50 L of 3.00 M of CaCl solution?

asked by Sue on March 1, 2013
98. ## chemistry

What is the pH of a solution prepared by dissolving 1.533 g HCl in water to make 420 mL of solution

asked by Nancy on December 17, 2012
99. ## Chemistry 3A

compute the molarity of a solution consisting of 2.0 moles of calcium chloride in 500mL of solution.

asked by Gurjot on December 10, 2012
100. ## Chemistry

The pH of a nitric acid solution is 1.2. What is the concentration of nitrate ion in the solution? Any help would be greatly appreciated, Thank you!!

asked by Dani on September 14, 2009