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CD ROM Paradise Collection 4
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CD ROM Paradise Collection 4 1995 Nov.iso
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IS_FILES.EXE
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REDOXCAL.ISD
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1994-08-15
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ETC■■■THE OXIDATION/REDUCTION CALCULATOR
■0100
│ ƒ4 RedOx Combine and balance half-reactions. │
The Reduction-Oxidation calculator allows you to select any two half-
reactions from a library of more than 280 and combine them to yield a
complete reaction. If the resulting potential is positive, the combined
reaction is graphically depicted on the screen and the total reaction
potential and equilibrium constant are displayed.
If the reaction has a negative potential you can reverse the reduction and
oxidation half-reactions with a press of a key. You can advance either the
reductant or oxidant through the list of available half- reactions, either
in absolute order of increasing or decreasing potential of all reactions or
for a particular species (element).
The two lower boxed sections of the screen show the currently selected
half-reactions. Selection focus is indicated by the highlighted word
[SELECT]. The number above each box is the index number in the library
list for that half-reaction.
To start the "RedOx" half-reaction function from the main menu, press "R"
or [ƒ4] or select with the highlight bar and press [enter] or with your
mouse, double-click the menu line.
________________________________________________________________________________
■5505
REDOX CALCULATIONS
THE REDOX FUNCTION SCREEN
The screen display for the reduction-oxidation calculator function consist
of a reaction display area at the top of the screen. Total reactions with a
positive potential are displayed in the top section of the screen along
with the potential and the equilibrium constant.
The two lower boxed sections of the screen show the currently selected
half-reactions. Selection focus is indicated by the highlighted word
[SELECT]. The number above each box is the index number in the library
list for that half-reaction.
SELECTING HALF-REACTIONS
Half-reaction selection applies to the reaction type which currently has
the focus. Default focus is the Oxidant half-reaction. The down arrow
moves in the direction of decreased potential and the up arrow in the
direction of reduced potential.
~
~> Press the down arrow key to select the half-reaction with the next <
~> lower potential. After several presses notice the message which <
~> explains that a reaction cannot occur because the total potential <
~> has fallen negative. <
CHANGING FOCUS
To change focus to the other half of the reaction pair, press the [ƒ5] key.
~
~> Press [ƒ5] to change the selection focus to Reductant. Now press <
~> the up arrow key several times. Soon the reaction potential will <
~> again become positive and the total reaction is displayed in the <
~> upper screen area. <
SWAPPING REACTION TYPES
You can swap reactions between oxidation and reduction, thus inverting the
reaction calculation and turning a negative sum potential positive by
pressing the [ƒ6] key. The current half-reactions and relative positions
in the ordered list are swapped.
~
~> Press the down arrow key until the reaction potential again becomes <
~> negative. (Press at least once past the null pairing of identical <
~> half-reactions.) Now press the [ƒ6] key. The half-reactions are <
~> swapped between oxidant and reductant and the potential is again <
~> positive. <
FINDING A SPECIFIC ELEMENT
To locate the first half-reaction in the list of a specific element, press
[ƒ10]. The Element search dialog box will open. Enter an element symbol,
number or name and press [enter]. If a half-reaction exist for the element
entered, the focus selection will display the first available half-reaction.
~
~> Press [ƒ10] and enter Fe followed by the [enter] key. The <
~> half-reaction in the window with the focus will be the Iron reaction <
~> with the lowest potential in list. <
SELECTING BY SPECIES
Most likely you will be primarily interested in looking at the various
potential reactions for a species. To limit the selection to additional
half-reactions for the currently selected element, press the left and right
arrow keys instead of the up and down arrow keys.
~
~> Press the right arrow key to see the next highest potential <
~> half-reaction for Iron. <
BROWSING THE LIST
To view the entire list of half-reactions press [ƒ8]. The display will
change to an ordered list of half-reactions according to the current focus.
The current half-reaction will be highlighted. Press the up and down arrow
keys to move the highlight one item at a time, or press [pgup] or [pgdn] to
move forward or back one screen at a time.
~> Press [ƒ8] to view the list of half-reactions. The highlight will be <
~> on the Iron half-reaction you last had selected. Change the <
~> selection highlight by pressing the up or down arrow key. <
You can return to the half-reaction selected when you selected list view by
pressing [del] or return to RedOx calculation view with the currently
selected half-reaction placed in the focus box by pressing [enter].
~> Press [enter] to return to the normal screen view and your new <
~> selection will appear in the focus window. <
________________________________________________________________________________
■0505
REDOX CALCULATOR COMMANDS
Commands available at the RedOx calculator main screen allow you to quickly
select the desired half-reactions.
╔══════════════════════════════════════════════════════════╗
║ up/dn arrows previous/next half-react by potential ║ ü Select half-
║ lft/rt arrows previous/next half-react for species ║ │ reactions.
║ [home] half-reaction of least potential ║ │
║ [end] half-reaction of greatest potential ║ ┘
║ [ƒ10] search for half-reaction for an element ║ é Search.
║ [ƒ5] toggle reduction/oxidation ║ â Switch types.
║ [ƒ6] swap reaction between reduction/oxidation ║ ┘
║ [ƒ8] browse a list of half-reactions ║ ä See the list.
║ [alt∙ƒ5] print report ║ α Print or save.
╚══════════════════════════════════════════════════════════╝
_______________________________________________________________________________
ȟSelecting Half-Reactions
Select among the library of half-reactions with the arrow keys. The
[uparrow] key selects among all half-reactions that with the next higher
potential. The [downarrow] key selects that with the next lower potential.
The [left-arrow] key select the half-reaction of the same element with the
next higher potential; the [right-arrow] that for the next lower of the
same element. The [home] and [end] keys go to the extremes of the list.
________________________________________________________________________________
ȎSearch By Element
Press [ƒ10] to enter an element symbol or number and find the first
reaction in the list for that element. The input prompt is the same as
that in the periodic table. Use the left and right arrow keys to view the
remainder of the half-reactions for the selected element.
________________________________________________________________________________
ȉToggle And Swap
The [ƒ5] toggle key changes the selection focus between reduction and
oxidation. The focus determines which half-reaction will change when the
selection commands are used. The [ƒ6] swap key exchanges the two
half-reactions between oxidation and reduction expression. Focus stays
with the selected half-reaction.
________________________________________________________________________________
ȊNernst Equation Calculator
At the initial design phase, the Nernst equation calculator was planned for
inclusion in version 2.0. Since time constraints have prevented its
inclusion in version 2.0, all references to it will be removed prior to the
final release of 2.0.
The Nernst Equation Calculator will be implemented in version 2.1 of The
Integral Scientist. With it you will be able to manipulate the variables
of the Nernst Equation given the currently selected full reaction.
________________________________________________________________________________
ȧThe Report Utility
≈1310 ÷IS_INTRO.ISD
The [@ƒ5] report generator creates a printed or file report complete with a
representation of the reaction. To turn to the section covering use of the
Report Generator, press Y or click on YES. Otherwise, press any other key
to close this link.
________________________________________________________________________________
»αThe List View of Half-Reactions
≈510
To view the half-reactions in a list, press the [ƒ7] key. To turn to the
subject of the RedOx List function, press Y or click on YES. Press any
other key to close this link.
________________________________________________________________________________
■0510
REDOX LIST VIEW
When you press [ƒ7] to open the list view of half-reactions, the screen
shows 20 half-reactions at a time, although they are displayed in symbolic
form rather than expanded graphically. The list is ordered either as
reductant or oxidant half-reactions depending on the focus when the list
function was invoked. The highlighted half-reaction when you press [enter]
to return to the regular screen will become the selected half-reaction.
╔════════════════════════════════════════════════════════╗
║ pgup/pgdn up/down one screen in list ║ ü Navigate
║ up/down arrows up/down in list ║ │ the list.
║ [home] goto beginning of list ║ │
║ [end] goto end of list ║ ┘
║ [ƒ10] goto first reaction by element ║ é Search.
║ [del] restore position to default ║ â Start over.
║ [enter] return to RedOx with selected reaction ║ ä Use selection.
╚════════════════════════════════════════════════════════╝
________________________________________________________________________________
ȟSelect A Half-Reaction
The up and down arrow keys move the selector bar through the list. The
[pgup] and [pgdn] commands scroll the list view a page at a time. [home]
and [end] go to the beginning and end of the list.
________________________________________________________________________________
ȎSearch By Element
Press [ƒ10] to enter an element symbol or number and find the first
reaction in the list for that element. The input prompt is the same as
that in the periodic table. To select within an element's list of half-
reactions, press [enter] to return to the calculator screen and use the
left and right arrow keys.
________________________________________________________________________________
ȉRestore Default Position
Press [del] to restore the selector to the half-reaction which was selected
when you invoked the list function.
________________________________________________________________________________
ȊReturn With Selection
With the highlight bar on the half-reaction you wish to use, press [enter]
to return to the regular screen. The selected reaction will be entered as
the current selection in the focus box.
________________________________________________________________________________
■■