Solving Reaction Rates in Lab Experiments

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SUMMARY

This discussion focuses on calculating the concentrations of reactants in a lab experiment involving reaction rates. The specific reactions include mixing 7.50 mL of 0.200 M KI and 7.5 mL of 0.100 M S2O8^-2, with a total volume of 20.0 mL. The key equation utilized is M1V1 = M2V2, which is essential for determining the final concentrations of KI, (NH4)2S2O8, and Na2S2O3 after mixing. Participants emphasize the importance of correctly applying dilution principles to solve for unknown concentrations.

PREREQUISITES
  • Understanding of molarity and concentration calculations
  • Familiarity with the dilution equation M1V1 = M2V2
  • Basic knowledge of chemical reactions and stoichiometry
  • Ability to perform mass balance calculations
NEXT STEPS
  • Study the application of the dilution equation in various chemical contexts
  • Explore stoichiometry in chemical reactions for accurate reactant calculations
  • Learn about reaction kinetics and factors affecting reaction rates
  • Investigate the role of indicators, such as starch, in titration experiments
USEFUL FOR

Chemistry students, lab technicians, and educators involved in teaching or learning about reaction rates and concentration calculations in laboratory settings.

natash
Messages
3
Reaction score
0

Homework Statement



okay so I am going to do a lab on reaction rates, there's a table given (effects of varying concentration)

there are 9 reactions, I will just give one, ( if i can figure this out ill figure out the rest on my own)

so reaction #1 flask A contains 7.50mL of .200M KI
none of .20 M KCI
.0050 M S2O3^-2
1 drop of starch
flask B contains 7.5 mL of .100M S2O8^-2

It says for each reaction determine the concentration of KI, (NH4)2S2O8, and Na2S2O3 that will be present when solution A and B are mixed together. the total volume for each reaction is 20.0 mL.

Homework Equations



M1V1=M2V2 ?

The Attempt at a Solution



I'm not sure how to begin this, would I have to use the M1V1=M2V2 ? how would I set it up ?
 
Physics news on Phys.org
Correct dillution equation (that's just mass balance) now you have to assign volumes and known concentration to symbols.
 

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