Concept explainers
8-41 What is the [OH-] and pOH of each solution?
(a) 0.10 M KOH,
(b) 0.10 M Na2CO3,
(c) 0.10 M Na3PO4,
(d) 0.10 M NaHCO3,
(a)
Interpretation:
The hydroxide ion concentration and pOH of KOH to be identified.
Concept Introduction:
Dissociation of water results in production of hydronium and hydroxide ion. The dissociation constant of water is denoted by Kw and can be represented as follows:
[H3 O+ ] [OH- ] = kw.
Where, kw is dissociation constant of water = 10-14.
[H3 O+ ] is the concentration of hydronium ion.
[OH- ] is the concentration of hydroxide ion.
Answer to Problem 8.41P
pOH of solution is 1.
Explanation of Solution
Hydronium ion concentration can be determined as:
Now, hydroxide ion concentration can be determined as:
pOH can be determined as:
Thus, pOH of solution is 1.
(b)
Interpretation:
The hydroxide ion concentration and pOH of Na2 CO3 to be identified.
Concept Introduction:
Dissociation of water results in production of hydronium and hydroxide ion. The dissociation constant of water is denoted by Kw and can be represented as follows:
[H3 O+ ] [OH- ] = kw.
Where, kw is dissociation constant of water = 10-14.
[H3 O+ ] is the concentration of hydronium ion.
[OH- ] is the concentration of hydroxide ion.
Answer to Problem 8.41P
pOH of solution is 2.4.
Explanation of Solution
Hydronium ion concentration can be determined as:
Now, hydroxide ion concentration can be determined as:
pOHcan be determined as:
Thus, pOH of solution is 2.4.
(c)
Interpretation:
The hydroxide ion concentration and pOH of Na3 PO4 to be identified.
Concept Introduction:
Dissociation of water results in production of hydronium and hydroxide ion. The dissociation constant of water is denoted by Kw and can be represented as follows:
[H3 O+ ] [OH- ] = kw.
Where, kw is dissociation constant of water = 10-14.
[H3 O+ ] is the concentration of hydronium ion.
[OH- ] is the concentration of hydroxide ion.
Answer to Problem 8.41P
pOH of solution is 2.0.
Explanation of Solution
Hydronium ion concentration can be determined as:
Now, hydroxide ion concentration can be determined as:
pOHcan be determined as:
Thus, pOH of solution is 2.0.
(d)
Interpretation:
The hydroxide ion concentration and pOH of NaHCO3 to be identified.
Concept Introduction:
Dissociation of water results in production of hydronium and hydroxide ion. The dissociation constant of water is denoted by Kw and can be represented as follows:
[H3 O+ ] [OH- ] = kw.
Where, kw is dissociation constant of water = 10-14.
[H3 O+ ] is the concentration of hydronium ion.
[OH- ] is the concentration of hydroxide ion.
Answer to Problem 8.41P
pOH of solution is 5.6.
Explanation of Solution
Hydronium ion concentration can be determined as:
Now, hydroxide ion concentration can be determined as:
pOH can be determined as:
Thus, pOH of solution is 5.6.
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Chapter 8 Solutions
Bundle: Introduction To General, Organic And Biochemistry, 11th + Owlv2, 1 Term (6 Months) Printed Access Card
- 8-33 Write an equation for the reaction of HCI with each compound. Which are acid—base reactions? Which are redox reactions? (a) Na2CO3 (b) Mg (c) NaOH (d) Fe2O3 (e) NH3 (f) CH3NH2 (g) NaHCO3 (h) AIarrow_forward8-50 The usual concentration of HCO3- ions in blood plasma is approximately 24 millimoles per liter (mmol/L). How would you make up 1.00 L of a solution containing this concentration of HCO3- ions?arrow_forward8-110 A concentrated hydrochloric acid solution contains 36.0% HCI (density 1.18 = g/mL). How many liters are required to produce 10.0 L of a solution that has a pH of 2.05?arrow_forward
- 8-17 For each of the following, tell whether the base is strong or weak. (a) NaOH (b) Sodium acetate (c) KOH (d) Ammonia (e) Waterarrow_forward8-51 What is the end point of a titration?arrow_forward8-39 What is the pH of each solution given the following values of [H3O+)? Which solutions are acidic, which are basic, and which are neutral? (a) M (b) M (c) M (d) Marrow_forward
- 8-35 Given the following values of [H3O+), calculate the corresponding value of [OH-] for each solution. (a) 10-11 M (b) 10-4 M (c) 10-7 M (d) 10 Marrow_forward8-60 How is the buffer capacity affected by the ratio of the conjugate base to the conjugate acid?arrow_forward8-107 Following are pH ranges for several human biological materials. From the pH at the midpoint of each range, calculate the corresponding [H3O+]. Which materials are acidic, which are basic, and which are neutral? (a) Milk, pH 6.6-7.6 (b) Gastric contents, pH 1.0-3.0 (c) Spinal fluid, pH 7.3-7.5 (d) Saliva, pH 6.5-7.5 (e) Urine, pH 4.8-8.4 (f) Blood plasma, pH 7.35-7.45 (g) Feces, pH 4.6-8.4 (h) Bile, pH 6.8-7.0arrow_forward
- 8-111 The volume of an adult's stomach ranges from 50 mL when empty to 1 L when full. On a certain day, its volume is 600. mL and its contents have a pH of 2.00. (a) Determine the number of moles of present. (Chapter 4) (b) Assuming that all the H+ is due to HCl(aq), how many grams of sodium hydrogen carbonate, NaHCO3, will completely neutralize the stomach acid? (Chapter 4)arrow_forward8-34 When a solution of sodium hydroxide is added to a solution of ammonium carbonate and then heated, ammonia gas, NH3 is released. Write a net ionic equation for this reaction. Both NaOH and (NH4)2CO3 exist as dissociated ions in aqueous solution.arrow_forward8-14 Write an equation for the reaction that takes place when each acid is added to water. (a) HNO3 (b) HBr (c) HCO3- (d) NH4+arrow_forward
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage Learning