Determination of specific heat in a reaction

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Discussion Overview

The discussion revolves around the determination of specific heat in chemical reactions, particularly focusing on whether it is possible to estimate the heat released in a reaction before it occurs. The scope includes theoretical calculations and practical considerations related to chemical reactions.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Homework-related

Main Points Raised

  • One participant inquires about the possibility of determining the specific heat of a reaction prior to its occurrence.
  • Another participant suggests that it is possible to calculate specific heat or use experimental results from similar reactions to make predictions.
  • A participant asks for clarification on whether there is a specific reaction in question.
  • The original poster provides an example of a baking soda and vinegar reaction, questioning how to estimate the heat produced without conducting the experiment.
  • One response proposes using the standard enthalpy of formation for the involved substances to calculate the heat difference before and after the reaction.
  • A participant shares their background in alternative methods for steam-powered turbines and expresses a desire to avoid trial and error in their home project, seeking a formula for estimating heat release.
  • Another participant acknowledges the clarification provided by a previous contributor.
  • A question is raised about the relationship between standard enthalpy of formation and the heat released in a reaction.

Areas of Agreement / Disagreement

Participants express differing views on the feasibility of estimating specific heat before a reaction occurs, with some suggesting calculations based on enthalpy and others focusing on the need for experimental data. The discussion remains unresolved regarding the best approach to estimate heat release.

Contextual Notes

Limitations include the lack of specific reactions discussed and the dependence on the accuracy of standard enthalpy values. There are also unresolved questions about the applicability of theoretical calculations to practical scenarios.

Who May Find This Useful

This discussion may be useful for individuals interested in chemistry, particularly those exploring thermodynamics, reaction energetics, or conducting home experiments related to chemical reactions.

thisguy
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Is there a way to determine the specific heat of a reaction before said reaction is introduced. thanks in advance for all of your inputs.
 
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What do you mean with "before"? You can calculate it. Or run an experiment somewhere else and use this result to predict what will happen.
 
Do you have a specific reaction you're wanting to know about?
 
No, I don't have a specific reaction in mind. But, for instance, a baking soda and vinegar volcano. My question is without ever have mixed the ingredients, can I determine the approximate amount of heat given off? Thank you for your comments.
 
My research is in alternative methods for steam powered turbines on a very small scale. This project is purely educational as I am not currently in school nor do I have a job demanding this expertise. As I can easily make sodium hydroxide at home I will probably try to use that as 1 ingredient. I wish not for trial and error, as I said, home project, may not even get off the ground. I am looking for a formula that can measure the approx. heat given off by the reaction before I cause the reaction. thank you for your comments.
 
Ok, now I understand. Thank you mfb for helping me.
 
Do you know anything about chemistry and how to find the amount of heat given off by a reaction when given the standard ethalpy of formation for each substance?
 

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