A solution has [OH¯] = 4.0 × 10-. What is the value of [H*] for the solution?

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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X X
Sun Aug 8 7:40 PM
Theodore E. Brown, H. Eugene H LeMay, Bruce E. Bursten, Cather...
Page 719 of 1,246 – Shared
Q
Search
[Un ]- [ j
Ch
Theodore E. Brown, H. Eu...
Is
(1.0 × 10¬14)
1.0 X 10-14
(b) In this instance
[H*]
5.6 X 10-6 M
R aIn N
[OH¯]
1.8 × 10-9
N
This solution is acidic because
[H*] > [OH¯]
16.3|The Autoionization of Water
Practice Exercise 1
Practice Exercise 2
Cell m
A solution has [OH¯] = 4.0 × 10-8. What is the value of [H*]
for the solution?
Calculate the concentration of OH¯(ag) in a solution in which
(a) [H*] = 2 x 10–6 M;
(c) [H*] = 200 × [OH¯].
оpert
W
i the mld d
ugl . delg M
(b) [H*] = [OH¯];
I pa
(a) 2.5 × 10¬8 M
(d) 2.5 × 10
(b) 4.0 × 10
(e) 4.0 × 10'
M
(c) 2.5 × 10¬7 M
-6
9-
M
M
678
rON I e
16.4 | The pH Scale
The len Prodsct of Water
The twer
The n
e
JE nur e t
The molar concentration of H(aq) in an aqueous solution is usually very small. For
convenience, we therefore usually express [H*] in terms of pH, which is the negative
logarithm in base 10 of [H*]:*
r d en .c wdte t
T ounag e
rigger Feel
Love Within
S ema nc g t
pH = -log[H*]
[16.17]
Ne
If you need to review the use of logarithms, see Appendix A.
In Sample Exercise 16.4, we saw that [H*]
solution at 25 °C. We can now use Equation 16.17 to calculate the pH of a neutral solution
ari-
Derefe
BAMPLE
CE 4 Cdg h Witr
S e
= 1.0 × 10-7 M for a neutral aqueous
erie I
-XI-sr-
at 25 °C:
Male
Еxp
pH
-log(1.0 X 10-7) = -(-7.00) = 7.00
679
By: Jam
*Because [H*] and [H3O*] are used interchangeably, you might see pH defined as -log [H;O*].
indne
syser
d.e om r
MIRKISTM MM
eNIN N
w ud e l
M ES Crng m O
BOUTON
SECTION 16.4 The pH Scale
681
NHIT E
16.4 The pH Scale
The I f
air n
PDF
Table 16.1 Relationships among [H*], [OH¯], and pH at 25 °C
Light
Solution Type
[H*](M)
[OH-](M)
pH
680
Acidic
>1.0 × 10–7
<1.0 × 10-7
<7.00
Neutral
10 X 10-7
10 X 10-7
7.00
AUG
8.
étv
Transcribed Image Text:Safari File Edit View History Bookmarks Window Help X X Sun Aug 8 7:40 PM Theodore E. Brown, H. Eugene H LeMay, Bruce E. Bursten, Cather... Page 719 of 1,246 – Shared Q Search [Un ]- [ j Ch Theodore E. Brown, H. Eu... Is (1.0 × 10¬14) 1.0 X 10-14 (b) In this instance [H*] 5.6 X 10-6 M R aIn N [OH¯] 1.8 × 10-9 N This solution is acidic because [H*] > [OH¯] 16.3|The Autoionization of Water Practice Exercise 1 Practice Exercise 2 Cell m A solution has [OH¯] = 4.0 × 10-8. What is the value of [H*] for the solution? Calculate the concentration of OH¯(ag) in a solution in which (a) [H*] = 2 x 10–6 M; (c) [H*] = 200 × [OH¯]. оpert W i the mld d ugl . delg M (b) [H*] = [OH¯]; I pa (a) 2.5 × 10¬8 M (d) 2.5 × 10 (b) 4.0 × 10 (e) 4.0 × 10' M (c) 2.5 × 10¬7 M -6 9- M M 678 rON I e 16.4 | The pH Scale The len Prodsct of Water The twer The n e JE nur e t The molar concentration of H(aq) in an aqueous solution is usually very small. For convenience, we therefore usually express [H*] in terms of pH, which is the negative logarithm in base 10 of [H*]:* r d en .c wdte t T ounag e rigger Feel Love Within S ema nc g t pH = -log[H*] [16.17] Ne If you need to review the use of logarithms, see Appendix A. In Sample Exercise 16.4, we saw that [H*] solution at 25 °C. We can now use Equation 16.17 to calculate the pH of a neutral solution ari- Derefe BAMPLE CE 4 Cdg h Witr S e = 1.0 × 10-7 M for a neutral aqueous erie I -XI-sr- at 25 °C: Male Еxp pH -log(1.0 X 10-7) = -(-7.00) = 7.00 679 By: Jam *Because [H*] and [H3O*] are used interchangeably, you might see pH defined as -log [H;O*]. indne syser d.e om r MIRKISTM MM eNIN N w ud e l M ES Crng m O BOUTON SECTION 16.4 The pH Scale 681 NHIT E 16.4 The pH Scale The I f air n PDF Table 16.1 Relationships among [H*], [OH¯], and pH at 25 °C Light Solution Type [H*](M) [OH-](M) pH 680 Acidic >1.0 × 10–7 <1.0 × 10-7 <7.00 Neutral 10 X 10-7 10 X 10-7 7.00 AUG 8. étv
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