I\'m working on a chemistry lab on calorimetry. I need help figuring how to calc

Question

I'm working on a chemistry lab on calorimetry. I need help figuring how to calculate the heat (in kj) released during the combustion of the unknown (see attached for data in the experiment).

17. DISCUSSION With the response factor of the calorimeter that you calculated, and the measured temperature change for the unknown run, calculate the heat (in kJ) released during the combustion of the unknown. You may use either of the two methods described in the Introduction section. Enter the value you obtain below. heat for Unk kJ

Explanation / Answer

Let the mass of calorimeter containing water is x grams

The specific heat of water is 4.18

The change in temperature = 375.4-21 = 324.4 0C

So Heat gained by calorimeter = Heat released due to combustion of compound

Heat gained by calroimeter = Mass of water X specific heat X change in temperature

Let the heat gained by calorimeter calculate is Q KJ

Then the heat released by 10.71g of unkonw compound will be Q KJ

so heat released by combustion of one gram of unknown compound = Q / 10.71

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---