
Interpretation:
Write the importance of maintaining pressure in gas electrode cells.
Concept introduction:
The volume and density of a gas alters with changing physical conditions like pressure and temperature.

Answer to Problem 77A
In a cell where gases are involved as reactants or products, the pressure of gas is critical because the concentration of gas at a particular place of cell can change with change in pressure which can affect the measurement of standard potential.
Explanation of Solution
The concentration of a gas depends on its density at a particular space which depends on the volume of gas which in turn depends on the pressure of gas (temperature remaining constant). If the pressure were to be changed during the measurement of potential, the composition of gas will change which will lead to inaccurate measurement of potential.
The pressure of the cell is kept critical so that the concentration of its gaseous components remain the same.
Chapter 20 Solutions
Glencoe Chemistry: Matter and Change, Student Edition
Additional Science Textbook Solutions
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
Biology: Life on Earth (11th Edition)
Microbiology: An Introduction
Applications and Investigations in Earth Science (9th Edition)
Human Anatomy & Physiology (2nd Edition)
Microbiology: An Introduction
- Using iodometry I want to titrate a sodium thiosulfate solution and I use 15 mL. If I have 50 mL of a 0.90 M copper solution and KI, what will be the molarity of sodium thiosulfate?arrow_forwardDraw the product formed when the following pair of compounds is treated with NaOEt in ethanol. + i CNarrow_forwardI need help with the followingarrow_forward
- I need help with the followingarrow_forwardFor Raman spectroscopy/imaging, which statement is not true regarding its disadvantages? a) Limited spatial resolution. b) Short integration time. c) A one-dimensional technique. d) Weak signal, only 1 in 108 incident photons is Raman scattered. e) Fluorescence interference.arrow_forwardUsing a cell of known pathlength b = 1.25115 x 10-3 cm, a water absorption spectrum was measured. The band at 1645 cm-1, assigned to the O-H bending, showed an absorbance, A, of 1.40. a) Assuming that water density is 1.00 g/mL, calculate the water molar concentration c (hint: M= mole/L) b) Calculate the molar absorptivity, a, of the 1645 cm-1 band c) The transmitted light, I, can be written as I= Ioexp(-xb), where x is the absorption coefficient (sometimes designated as alpha), Io is the input light, and b is the cell pathlength. Prove that x= (ln10)*x*c. (Please provide a full derivation of the equation for x from the equation for I). d) Calculate x for the 1645 cm-1 bandarrow_forward
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY





