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pH and pOH Solutions Library

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162 solutions

pH and pOH

Q. Modify the following molecules so that they show the form that is dominant at physiological PH. a) cadaverine (b) octopamine

Solved • Jun 16, 2020

pH and pOH

Q. What is the pH of a 3.0 M solution of HClO4?

Solved • Apr 30, 2020

pH and pOH

Q. What is the pH of 8 x 10-8 M HCl?

Solved • Apr 30, 2020

pH and pOH

Q. Calculate pH for each H3O+ concentrationa) [H3O+] = 1 x 10-8 Mb) [H3O+] = 0.1 Mc) [H3O+] = 1 x 10-12 M

Solved • Apr 29, 2020

pH and pOH

Q. Calculate the H3O+ concentration for each pH:a) pH = 11b) pH = 3c) pH = 5

Solved • Apr 29, 2020

pH and pOH

Q. Calculate pH for each H+ concentration:a) [H+] = 1 x 10-7 Mb) [H+] = 0.001 Mc) [H+] = 1 x 10-12 M

Solved • Apr 29, 2020

pH and pOH

Q. a. What is the pH of a 0.100 M HI solution? Is that neutral, acidic, or basic?  b. What is the pOH of a 0.100 M HI solution? Is that neutral, acidi...

Solved • Apr 29, 2020

pH and pOH

Q. Complete this table of values for three aqueous solutions at 25 °C 

Solved • Apr 22, 2020

pH and pOH

Q. Calculate [H+] for each of the following solutions.[OH-] = 4.8x10-4 M[OH-] = 8.3x10-9 MA solution in which [OH-] is 140 times greater than [H+].

Solved • Apr 21, 2020

pH and pOH

Q. What is the pH of a 3.4 x 10-8 M HClO4 solution at room temperature?A. 7.1B. 7.0C. 5.3D. 6.9

Solved • Apr 21, 2020

pH and pOH

Q. In a 1 M solution of NH3(aq), identify the relative molar amounts of these species: H2O, NH3, H3O+, NH4+ = OH-

Solved • Apr 14, 2020

pH and pOH

Q. Complete this table of values for four aqueous solutions at 25  °C.

Solved • Mar 25, 2020

pH and pOH

Q. A solution in which [OH?] is 100 times greater than [H+]. Express your answer using two significant figures.

Solved • Mar 25, 2020

pH and pOH

Q. The Kw for water at 0 C is 0.12 x 10^-14 . Calculate the pH of a neutral aqueous solution at 0°C?

Solved • Mar 13, 2020

pH and pOH

Q. Find the pH of a solution at 25°C in which [OH–] = 2.5 × 10–9 M.A) 6.50B) 8.60C) 7.40D) 2.50E) 5.40

Solved • Feb 18, 2020

pH and pOH

Q. What is the [H+] of a solution with a pOH = 11.5?a. 2.22x10-2 Mb. 6.12x10-4 Mc. 1.25x10-4 Md. 9.86x10-3 Me. 1.41x10-3 M

Solved • Jan 24, 2020

pH and pOH

Q. Calculate the hydronium ion ([H3O]+) concentration in an aqueous solution that contains 2.50 × 10-4 M in hydroxide ion. Enter your answer in expone...

Solved • Dec 17, 2019

pH and pOH

Q. What is the [OH-] in a solution that has a pH of 11.70?a. 5.0x10-3 Mb. 2.0x10-12 Mc. 1.0x10-7 Md. 2.0x102 Me. 5.0x1011 M

Solved • Dec 16, 2019

pH and pOH

Q. What is the [OH-] in a solution that has a pH of 12.80?

Solved • Dec 12, 2019

pH and pOH

Q. What is the [OH-] in a solution that has a pH of 11.50?

Solved • Dec 11, 2019

pH and pOH

Q. Calculate the hydronium ion concentration for a solution with a pH of 6.8.(A) 6.3 × 10−8 M (B) 1.6 × 10−7 M (C) 6.8 M (D) 0.83 M (E) 6.3 × 106 M

Solved • Nov 28, 2019

pH and pOH

Q. Calculate the concentration of hydroxide ions in an acidic solution with pH of 4.47.a. 3.39 x 10-5 Mb. 0 Mc. 2.95 x 104 Md. 1 x 10-14 Me. 2.95 x 10...

Solved • Nov 12, 2019

pH and pOH

Q. A change in pH of 1.0 unit indicates that: 1. the volume of H+ in a solution changes by an order of magnitude.2. the acid or base content decreases...

Solved • Aug 25, 2019

pH and pOH

Q. What is the pH of a .025 M HCl solution?

Solved • Aug 7, 2019

pH and pOH

Q. Trimethylamine, (CH3)3N, is a weak base (Kb = 6.4 × 10–5) that hydrolyzes by the followingequilibrium: (CH3)3N + H2O → (CH3)3NH+ + OH– What is the ...

Solved • Aug 7, 2019

pH and pOH

Q. Calculate [OH-] for each of the following solutions, and indicate whether the solution is acidic, basic, or neutral. A solution in which [H+] is 10...

Solved • Aug 2, 2019

pH and pOH

Q. The probe of the pH meter shown here is sitting in a beaker that contains a clear liquid.Why is the temperature given on the pH meter?

Solved • Dec 13, 2018

pH and pOH

Q. Carbon dioxide in the atmosphere dissolves in raindrops to produce carbonic acid (H2CO3), causing the pH of clean, unpolluted rain to range from ab...

Solved • Dec 13, 2018

pH and pOH

Q. If the pOH for a solution is 3.00, what is the pH?

Solved • Dec 13, 2018

pH and pOH

Q. Complete the following table by calculating the missing entries. In each case indicate whether the solution is acidic or basic. ...

Solved • Dec 13, 2018

pH and pOH

Q. Complete the following table by calculating the missing entries. In each case indicate whether the solution is acidic or basic.pHpOH[H+][OH-]Acidic...

Solved • Dec 13, 2018

pH and pOH

Q. The binding of oxygen by hemoglobin in the blood involves the following equilibrium reaction: HbH+(aq) + O2(aq) ⇌ HbO2(aq) + H+(aq)In this equation...

Solved • Dec 13, 2018

pH and pOH

Q. Environmental engineers use alkalinity as a measure of the capacity of carbonate buffering systems in water samples: Alkalinity (mol/L) = [HCO3−] +...

Solved • Nov 21, 2018

pH and pOH

Q. The molecular scene depicts the relative concentrations of H 3O+ (purple) and OH (green) in an aqueous solution at 25°C. (Counter ions and solvent ...

Solved • Nov 20, 2018

pH and pOH

Q. The molecular scene depicts the relative concentrations of H3O+ (purple) and OH (green) in an aqueous solution at 25°C. (Counter ions and solvent m...

Solved • Nov 20, 2018

pH and pOH

Q. How many moles of H3O+ or OH− must you add to a liter of strong base solution to adjust its pH from 9.33 to 9.07? Assume a negligible volume change.

Solved • Nov 19, 2018

pH and pOH

Q. How many moles of H3O+ or OH− must you add to a liter of strong acid solution to adjust its pH from 3.15 to 3.65 ?  Assume a negligible volume change.

Solved • Nov 19, 2018

pH and pOH

Q. (a) What are [H3O+], [OH−], and pOH in a solution with a pH of 8.97?

Solved • Nov 19, 2018

pH and pOH

Q. At 25°C, a saturated solution of benzoic acid (K a = 6.4 X 10 -5) has a pH of 2.80. Calculate the water solubility of benzoic acid in moles per liter.

Solved • Nov 16, 2018

pH and pOH

Q. A solution is tested for pH and conductivity as pictured below:The solution contains one of the following substances: HCl, NaOH, NH4Cl, HCN, NH3, H...

Solved • Nov 16, 2018

pH and pOH

Q. The pOH of a sample of baking soda dissolved in water is 5.74 at 25ºC. Calculate the pH, [H +], and [OH -] for this sample. Is the solution acidic ...

Solved • Nov 8, 2018

pH and pOH

Q. The pH of a sample of gastric juice in a person’s stomach is 2.1. Calculate the pOH,    [H +], and [OH -] for this sample. Is gastric juice acidic ...

Solved • Nov 8, 2018

pH and pOH

Q. Calculate [H +] and [OH -] for each solution at 25ºC. Identify each solution as neutral, acidic, or basic.d. pH = 3.20

Solved • Nov 7, 2018

pH and pOH

Q. Calculate [H +] and [OH -] for each solution at 25ºC. Identify each solution as neutral, acidic, or basic.b. pH = 15.3

Solved • Nov 7, 2018

pH and pOH

Q. Calculate the [H+] of each of the following solutions at 25ºC. Identify each solution as neutral, acidic, or basic.a. [OH -] = 1.5 M

Solved • Nov 7, 2018

pH and pOH

Q. Calculate the [OH -] of each of the following solutions at 25ºC. Identify each solution as neutral, acidic, or basic.b. [H+] = 8.3 x 10 -16 M 

Solved • Nov 7, 2018

pH and pOH

Q. The hydroxide ion concentration in household ammonia is 3.2 × 10 −3 M at 25 °C. What is the concentration of hydronium ions in the solution?

Solved • Nov 5, 2018

pH and pOH

Q. The hydronium ion concentration in a sample of rainwater is found to be 1.7 X 10 −6 M at 25 °C. What is the concentration of hydroxide ions in the ...

Solved • Nov 5, 2018

pH and pOH

Q. What are the hydronium and hydroxide ion concentrations in a solution whose pH is 6.52?

Solved • Nov 5, 2018

pH and pOH

Q. A solution is made by mixing 15.0 g of Sr(OH)2 and 60.0 mL of 0.210 M HNO3.You may want to reference (Pages 149 - 153) Section 4.6 while completing...

Solved • Oct 31, 2018

pH and pOH

Q. Calculate the pOH of a 0.0448 M HCIO4 solution at the following temperatures. a) 5°Cb) 45°C

Solved • Oct 23, 2018

pH and pOH

Q. Calculate the pH of a 0.0477 M KOH solution at the following temperatures.a) 10°Cb) 50°C

Solved • Oct 23, 2018

pH and pOH

Q. What are [H3O+], [OH-], and pOH in a solution with a pH of 3.22? 

Solved • Oct 8, 2018

pH and pOH

Q. Complete this table of values for three aqueous solutions at 25°C.

Solved • Sep 19, 2018

pH and pOH

Q. Calculate the pH and the pOH of an aqueous solution that is 0.050 M in HCl(aq) and 0.060 M in HBr(aq) at 25°C.

Solved • Sep 12, 2018

pH and pOH

Q. Calculate the pH of each of the following strong acid solutions. Part C5.00 mL of 1.50 M HCl diluted to 0.530 L. Express your answer using three de...

Solved • Sep 11, 2018

pH and pOH

Q. Calculate the pH of each of the following strong acid solutions. Part A8.90 x 10-3 M HNO3. Express your answer using three decimal places.Part B0.6...

Solved • Sep 11, 2018

pH and pOH

Q. The hydronium ion concentration of an aqueous solution of 0.348 M formic acid, HCOOH (Ka = 1.80 x 10-4) is 

Solved • Aug 30, 2018

pH and pOH

Q. What is the pH of a solution that has a [H +] = 0.0045 M? a. 2.35 b. None of these c. 1.35 d. 7.0045 e. 3.35

Solved • Aug 30, 2018

pH and pOH

Q. Determine the concentration of H+ in the following solutions at 25°C: a) a solution with pH = 2.0 [H+] =  b) a solution  [H+] =  c) a solution with...

Solved • Aug 29, 2018

pH and pOH

Q. Calculate the hydronium ion, H3O+, and hydroxide ion, OH-, concentrations for a 0.0244 M HCI solution. [H3O+] = [OH-] = 

Solved • Aug 29, 2018

pH and pOH

Q. Calculate [H+] for each of the following solutions, and indicate whether the solution is acidic, basic, or neutral. Part A[OH-] = 5.5 x 10-4 M. Exp...

Solved • Aug 23, 2018

pH and pOH

Q. What are the concentrations of OH- and H+ in a 0.00052 M solution of Ba(OH)2 at 25°C? Assume complete dissociation. [OH-] = [H+] =

Solved • Aug 22, 2018

pH and pOH

Q. Calculate the H3O+ concentration for each pH: a) pH = 13b) pH = 2 c) pH = 8 

Solved • Aug 21, 2018

pH and pOH

Q. Complete this table of values for four aqueous solutions at 25°C.

Solved • Aug 21, 2018

pH and pOH

Q. What are the H3O+ and OH- concentrations of solutions that have the following pH values? Part ApH3 Express your answer using one significant figure...

Solved • Aug 21, 2018

pH and pOH

Q. A solution of NaOH(aq) contains 6.6 g of NaOH(s) per 100.0 mL of solution. Calculate the pH and the pOH of the solution at 25°C. pH = pOH = 

Solved • Aug 14, 2018

pH and pOH

Q. Calculate [H3O+] for the following solutions:a. 3.44 x 10-3 M HBr[H3O+] = b. 1.50 x 10-2 M KOH[H3O+] =  

Solved • Aug 14, 2018

pH and pOH

Q. Calculate the pH of an aqueous solution that is 0.020 M in HCl (aq) at 25°C.  

Solved • Aug 14, 2018

pH and pOH

Q. What is the concentration of OH- and pOH in a 0.00058 M solution of Ba(OH)2 at 25°. Assume complete dissociation. [OH-] =pOH =  

Solved • Aug 14, 2018

pH and pOH

Q. Calculate the pH of a 0.03 M solution of Ca(OH)2. Select one: a. 1.48 b. 12.52 c. 1.18 d. 12.82 e. None of these

Solved • Aug 13, 2018

pH and pOH

Q. Question 2Calculate the pH of a solution with [OH-] equal to 2.9 x 10-4 M. 

Solved • Aug 9, 2018

pH and pOH

Q. [OH-] = 5.5 x 10-9 M Express the molarity to two significant figures. 

Solved • Aug 9, 2018

pH and pOH

Q. Part AIf the [H3O+] is 4.950 x 10-12, what is the pH? (i) -11.305 (ii) 11.3 (iii) 2.020 x 10-12 (d) 11.305

Solved • Aug 8, 2018

pH and pOH

Q. Calculate the pH of a 0.0279 M HCl solution. Your answer should be to the nearest tenth.

Solved • Aug 7, 2018

pH and pOH

Q. Calculate either [H3O+] or [OH-] for the solutions below. a) [OH-] = 3.21 x 10-7 M b) [H3O+] = 9.73 x 10-9 M c) [H3O+] = 0.000551 M Which of these ...

Solved • Jul 17, 2018

pH and pOH

Q. A solution has a pH of 3 and another has a pH of 7. What is true? (a) The pH 3 has more Hydrogen ions than the pH7 and is an acid. (b) The pH 7 is ...

Solved • Jul 17, 2018

pH and pOH

Q. Complete this table of values for three aqueous solutions at 25°C.

Solved • Jul 17, 2018

pH and pOH

Q. Calculate pH for each H3O+ concentration: a) [H3O+] = 1 x 10 -6 M b) [H3O+] = 0.001 M c) [H3O+] = 1 x 10 -12 M

Solved • Jul 17, 2018

pH and pOH

Q. Carbonated cola is more acidic than coffee or even orange juice because cola contains phosphoric acid. What is the molar concentration of H3O+ in a...

Solved • Jul 17, 2018

pH and pOH

Q. A patient with respiratory alkalosis has a blood plasma pH of 7.59. What is the [H3O+] of the blood plasma? Express your answer to two significant ...

Solved • Jul 17, 2018

pH and pOH

Q. Calculate the pH and the pOH of an aqueous solution that is 0.040 M in HCl(aq) and 0.055 M in HBr(aq) at 25°C.

Solved • Jul 16, 2018

pH and pOH

Q. A patient with respiratory alkalosis has a blood plasma pH of 7.58. What is the [OH–] of the blood plasma? Express your answer to two significant f...

Solved • Jul 10, 2018

pH and pOH

Q. Calculate the pH of the following aqueous solutions at 25°C, K w at 25°C is 1.01e-14. (a) 3.2 x 10-11 M KOH ___________ (b) 7.6 x 10-7 M HNO3 _____...

Solved • Jul 4, 2018

pH and pOH

Q. You have a solution with a hydronium ion concentration of 1.0 times 10 -7 M. What is the hydroxide ion concentration in this beaker? a. 0.01 Mb. 1 ...

Solved • Jun 26, 2018

pH and pOH

Q. Calculate [H+], and [OH-] in an aqueous solution that is 0.115 M in HCLO 4(aq) at 25°C. Is the solution acidic, basic or neutral? 

Solved • Jun 19, 2018

pH and pOH

Q. Calculate either [H3O+] or [OH -] for the solution below. Which of these solutions are basic at 25°C?

Solved • Jun 19, 2018

pH and pOH

Q. Calculate [OH-] for each of the following solutions, and indicate whether the solution is acidic, basic, or neutral. [H+] = 6.5 x 10-10 M. Express ...

Solved • Jun 18, 2018

pH and pOH

Q. Be sure to answer all parts.What are [H3O+], [OH -], and pOH in a solution with a pH of 11.50? 

Solved • Jun 12, 2018

pH and pOH

Q. What is the pH of an aqueous solution with a hydrogen ion concentration of [H+] = 7.3 times 10-9 M?

Solved • Jun 12, 2018

pH and pOH

Q. What is the pH of a 3.0 M solution of HCIO4?

Solved • Jun 12, 2018

pH and pOH

Q. Calculate [H3O+] given [OH -] in each aqueous solution.  Express your answer using two significant figures. Part A[OH -] = 6.1 x 10 -11 M Part BCla...

Solved • Jun 11, 2018

pH and pOH

Q. The question has multiple parts. Work on all the parts to get the most points.Determine the [H+] value for solutions with the following characteris...

Solved • Jun 6, 2018

pH and pOH

Q. The pH scale was designed to make it convenient to express hydrogen ion concentrations that are small in aqueous solutions. The definition of pH is...

Solved • Jun 6, 2018

pH and pOH

Q. What are the concentrations of H 3O+ and OH- in oranges that have a pH of 3.76? 

Solved • Jun 6, 2018

pH and pOH

Q. Given that KN for water is 2.4 x 10-14 M2 at 37 °C, Compute the pH of a neutral aqueous solution at 37 °C, which is the normal human body temperatu...

Solved • Jun 6, 2018

pH and pOH

Q. Calculate either [H3O+] or [OH–] for the solutions below at 25°C. a) [OH–] = 1.21 × 10–7 M     [H3O+] =  b) [H3O+] = 8.05 × 10–9 M     [OH–] =c) [H...

Solved • Jun 6, 2018

pH and pOH

Q. What is the pH of a neutral solution at a temperature where Kw = 9.9 times 10-14? Express your answer numerically using two decimal places.

Solved • May 27, 2018

pH and pOH

Q. What is the concentration of OH - in a 0.1 M solution of HI? 1 x 10-12 M 0.1 M 1 x 10-13 M 0.00001 M

Solved • May 21, 2018

pH and pOH

Q. Complete this table of values for three aqueous solutions at 25 c.

Solved • May 21, 2018