Need help designing a lab to calculate delta H?

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SUMMARY

This discussion focuses on designing a laboratory experiment to calculate the delta H value for the enthalpy change of ice to liquid water at 0°C. The key equation involved is q = n(delta H), where n represents the molarity. The energy required to melt one mole of ice is established as 6.02 kJ, which is critical for the experiment's calculations. The discussion also explores the thermal dynamics of mixing known masses of water and ice to validate the enthalpy change.

PREREQUISITES
  • Understanding of thermodynamics, specifically enthalpy changes.
  • Familiarity with calorimetry and heat transfer concepts.
  • Knowledge of molarity and its application in chemical calculations.
  • Basic laboratory skills for conducting experiments involving phase changes.
NEXT STEPS
  • Research calorimetry techniques for measuring heat transfer in phase changes.
  • Study the concept of molar enthalpy and its calculations in thermodynamics.
  • Explore the effects of temperature on phase changes in water.
  • Learn about experimental design principles for conducting chemical experiments.
USEFUL FOR

Chemistry students, educators designing lab experiments, and anyone interested in thermodynamics and calorimetry principles.

RockenNS42
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Homework Statement


I have to design a lab to calculate the delta H value of the enthalpy change of ice to liquid water. It has to stay at 0*C


Homework Equations


Needs to be in lab format but possible q=n(delta H) where n is the molarity



The Attempt at a Solution


I know the energy need to melt one mole of water is 6.02 KJ (oh so my Chem teacher tells me). I know that the energy need to heat up water increases until it hits 0*C then it plateaus until all the ice has melted, then it starts to increase again. What I'm not sure of is how to prove that the energy need is 6.02 KJ per mole.
 
Physics news on Phys.org
What will happen if you mix known mass of water of known temperature with known mass of ice? What are possible outcomes? Which ones fit your problem?
 

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