How can I plot concentration as a function of time on my TI-84 Plus calculator?

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SUMMARY

This discussion focuses on plotting concentration as a function of time using the TI-84 Plus calculator. The user has successfully entered time (t) and volume (V) data into the calculator's STAT menu but struggles to derive concentration (C) as a function of time. The concentration is calculated using the formula C = (8 - (12 / V))/10. The user seeks a method to plot C against t without manually creating a function for V in terms of t.

PREREQUISITES
  • Understanding of basic chemistry concepts, specifically concentration calculations.
  • Familiarity with the TI-84 Plus calculator's STAT and Y= functions.
  • Knowledge of how to manipulate equations and functions in graphing calculators.
  • Ability to interpret data tables and perform substitutions in mathematical expressions.
NEXT STEPS
  • Research how to create parametric equations on the TI-84 Plus to plot V as a function of t.
  • Learn about using the TI-84 Plus's "Table" feature to derive values for concentration over time.
  • Explore methods for fitting curves to data points in graphing calculators.
  • Investigate the use of regression analysis on the TI-84 Plus to model the relationship between V and t.
USEFUL FOR

Chemistry students, educators, and anyone utilizing the TI-84 Plus for plotting functions related to concentration and reaction kinetics.

ArjenB
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Hi,

I wasn't sure where to post this. I have a chemistry homework problem, which is not necessarily that hard, but it wants me to put values into my TI-84 Plus. I will not explain the problem too deeply, but it's about reaction time, volume, and concentration (mol/L).

I am given a table of the volume of gas, at certain time intervals.

t (s) V (cm^3)
10 12
20 22
30 34
... ...And so on... It is a long table with 20 time intervals and 20 volume values.

From volume, I have to calculate the concentration.

Eventually, the concentration C can be calculated with:

C = (8 - (12 / V))/10

(I had to find this equation myself)

I can easily plot C as a function of V. But the book wants me to plot C as a function of time (t) into my graphing calculator.

I have already added all the t and V values into a table, using the STAT option. t in L1, and V into L2. I have entered C as a function of V, into the "Y=" menu, with C as Y1 and V as x. I could of course get C as a function of time, if I could write V as a function of time, and then substitute V for t. But there is no definitive function that describes the shape of the V/t curve.

Then I tried to insert L2 for X, for the Y1 function, but that didn't work either.

I know I can always manually look up all the values and make a function of time myself, but that would take forever. I can do this once, but problems like these come back in the future, I'd father find a quicker way.

Is there a way to plot Concentration as a function of time, using the table that is given?Thank you in advance.
 
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