Effects of different starting Temperatures on sulfuric acid dilution

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  • Thread starter Thread starter LEO31
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SUMMARY

This discussion focuses on the effects of varying starting temperatures on the dilution of sulfuric acid (H2SO4) solutions. The user has developed a spreadsheet to analyze temperature changes based on final H2SO4 concentrations, specifically when both the 98% acid and water are at ambient temperature. They seek methods to accurately account for different starting temperatures of the acid and water, particularly for 98% and 70% (w/w) concentrations at 323.15 °K. The user expresses a desire for a more precise calculation method beyond graphical estimations.

PREREQUISITES
  • Understanding of sulfuric acid (H2SO4) concentration and dilution principles
  • Familiarity with temperature measurement in Kelvin (°K)
  • Proficiency in spreadsheet software for data analysis
  • Knowledge of thermodynamic principles related to solution mixing
NEXT STEPS
  • Research the thermodynamic properties of sulfuric acid solutions at varying temperatures
  • Explore mathematical models for calculating heat transfer during acid dilution
  • Investigate software tools for simulating chemical reactions and temperature changes
  • Learn about the use of empirical data versus graphical methods in chemical analysis
USEFUL FOR

Chemists, chemical engineers, laboratory technicians, and anyone involved in the preparation and analysis of sulfuric acid solutions will benefit from this discussion.

LEO31
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Homework Statement
Show the effects of different water temperatures on the dilution of 98% (w/w) H2SO4.
Relevant Equations
spreadsheet attached
I've been able to make a spreadsheet showing how the temperature changes depending on the final H2SO4 concentration in the diluite solution, but only if both the starting 98% acid and water are at ambient temperature. I'd like to figure out how to account for the difference in temperature of the starting acid (at different concentrations) and water.

For example: by starting with 98% (w/w) Acid at 323.15 °K and adding ambient temperature water
but also: by starting with 70% (w/w) Acid at 323.15 °K and adding water (@T≠ambient temperature)

The only way I've found so far is to rely on some sort of graph such as the ones attached, which I know to be correct but I'd like know if there's a way to get a more accurate result without point guessing at a graph. Thanks !

1713824653896.png
1713824714651.png
 

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