3. What is the meaning of pH? Choose the "micro" screen Micro from the options at the bottom of the page. A. What are two quantities of the three molecules or ions measured by the scale on the left? B. Toggle the top scale to concentration. What are the units of concentration? C. The switch below the scale (on the bottom) should read logarithmic. What is the range of values for concentration (use scientific notation!)? Change these values to standard notation (without the exponent) Which is the largest number on the scale (in scientific notation)? Which is the smallest number on the scale (in scientific notation) D. The substances in the boxes are H₂O, H3O+ and OH. Relate these three substances in a balanced chemical equation. E. Change the solutions and look at the concentration values. Which concentration level always stays constant? F. How are the concentration values of the other two substances related? G. Now, pick out two acidic solutions and two basic solutions from the previous chart. Indicate which is higher, the H3O+ concentration or the OH- concentration. Acidic/basic/neutral solution Which is higher, H3O+ or OH-? Acidic Acidic Basic Basic H. Change the logarithmic scale to linear. What do you notice about the position of the boxes on the scale? Why is a logarithmic scale preferred when measuring the concentration of H3O+ and OH-?
3. What is the meaning of pH? Choose the "micro" screen Micro from the options at the bottom of the page. A. What are two quantities of the three molecules or ions measured by the scale on the left? B. Toggle the top scale to concentration. What are the units of concentration? C. The switch below the scale (on the bottom) should read logarithmic. What is the range of values for concentration (use scientific notation!)? Change these values to standard notation (without the exponent) Which is the largest number on the scale (in scientific notation)? Which is the smallest number on the scale (in scientific notation) D. The substances in the boxes are H₂O, H3O+ and OH. Relate these three substances in a balanced chemical equation. E. Change the solutions and look at the concentration values. Which concentration level always stays constant? F. How are the concentration values of the other two substances related? G. Now, pick out two acidic solutions and two basic solutions from the previous chart. Indicate which is higher, the H3O+ concentration or the OH- concentration. Acidic/basic/neutral solution Which is higher, H3O+ or OH-? Acidic Acidic Basic Basic H. Change the logarithmic scale to linear. What do you notice about the position of the boxes on the scale? Why is a logarithmic scale preferred when measuring the concentration of H3O+ and OH-?
Introduction to General, Organic and Biochemistry
11th Edition
ISBN:9781285869759
Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Chapter6: Solutions And Colloids
Section: Chapter Questions
Problem 6.21P: 6-21 Are mixtures of gases true solutions or heterogeneous mixtures? Explain.
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Question
Transcribed Image Text:Concentration
(mol/L)
1.0 x 10-7
H3O+
Logarithmic
10²
10⁰
10-²
10-4
10-6
10-8
10-10
10-12
10-14
10-16
Quantity
(mol)
55
H₂O
1.0 x 10-7
OH™
Linear
pH
7.00
Water
OH3O+ / OH* Ratio
Molecule Count
1 L
½ L
Water
0.50 L
Transcribed Image Text:3. What is the meaning of pH? Choose the "micro" screen Micro from the options at the
bottom of the page.
A.
What are two quantities of the three molecules or ions measured by the scale on the
left?
B.
Toggle the top scale to concentration.
What are the units of concentration?
C.
The switch below the scale (on the bottom) should read logarithmic. What is the
range of values for concentration (use scientific notation!)?
Change these values to standard notation (without the exponent)
Which is the largest number on the scale (in scientific notation)?__
Which is the smallest number on the scale (in scientific notation)
D.
The substances in the boxes are H₂O, H3O+ and OH-. Relate these three substances in
a balanced chemical equation.
E. Change the solutions and look at the concentration values. Which concentration
level always stays constant?
F.
How are the concentration values of the other two substances related?
G. Now, pick out two acidic solutions and two basic solutions from the previous chart.
Indicate which is higher, the H3O+ concentration or the OH- concentration.
Acidic/basic/neutral
solution
Which is higher, H3O+ or OH-?
Acidic
Acidic
Basic
Basic
H. Change the logarithmic scale to linear. What do you notice about the position of the
boxes on the scale? Why is a logarithmic scale preferred when measuring the concentration
of H3O+ and OH-?
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