Can I get specific heat without a final temp? (heat of Rxn)

In summary, the speaker is trying to use the Dulong Petit method to find the molar mass of an unknown solid, but they need the specific heat of the solid. They only have the delta T for the water and are asking for help with finding the final temperature of the unknown solid. The speaker also mentions the heat exchange between two materials and a possible equation for calculating it.
  • #1
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Homework Statement


I have delta H _solution, and also the mass of the solitd and q_water and q_reaction.
Im using Dulong Petit to get MM but I need specific heat of the solid obviously.
I don't have a final temp of the unknown solid, just the delta T for the water
thanks for any help

Homework Equations


MM = 25 / specific heat, J/gdegC

The Attempt at a Solution

 
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  • #2
Not enough details. Can you state the complete problem as it was written for you?

On lots of these, if you only have two materials exchanging heat, then the heat lost by one is equal to the heat gained by the other.

If certain conditions are met, then m1*C1*delta T1 = - m2*C2* delta T2
 

FAQ: Can I get specific heat without a final temp? (heat of Rxn)

1. Can specific heat be calculated without knowing the final temperature?

Yes, specific heat can be calculated without knowing the final temperature. This can be done by measuring the initial temperature and using the heat of reaction equation, which takes into account the change in temperature and the amount of heat released or absorbed.

2. How is the heat of reaction related to specific heat?

The heat of reaction is a measure of the amount of heat released or absorbed during a chemical reaction. Specific heat, on the other hand, is a measure of the amount of heat required to raise the temperature of a substance by 1 degree Celsius. The two are related through the heat of reaction equation, which uses the specific heat of the substances involved in the reaction.

3. Can specific heat be used to determine the heat of reaction?

Yes, specific heat can be used to determine the heat of reaction. By measuring the initial temperature and using the heat of reaction equation, the heat of reaction can be calculated using the specific heat of the substances involved in the reaction.

4. What factors can affect the accuracy of calculating specific heat without a final temperature?

Some factors that can affect the accuracy of calculating specific heat without a final temperature include heat loss to the surrounding environment, incomplete mixing of reactants, and experimental errors in measuring temperatures and quantities of substances.

5. Are there any limitations to calculating specific heat without a final temperature?

Yes, there are limitations to calculating specific heat without a final temperature. This method assumes that the heat of reaction is the only source of heat in the system and neglects any heat loss or gain from the surrounding environment. Additionally, this method may not be accurate for reactions that have a high heat of reaction or involve multiple steps.

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