Midterm Winter 2011 #1

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Midterm Winter 2011 #1

Postby KaylaH » Sun Feb 07, 2016 1:01 pm

I don't understand how they got the equation to solve this question. Shouldn't the correct equation to solve for Ccal be
. So, why did they write it differently? Also, for the units, shouldn't it be kJ/degrees C...not kJ.C?

Emma Edmond 3E
Posts: 29
Joined: Fri Sep 25, 2015 3:00 am

Re: Midterm Winter 2011 #1

Postby Emma Edmond 3E » Tue Feb 09, 2016 5:21 pm

The equation to solve for heat capacity of a calorimeter is . So to solve for q we must use the equation
q=nDeltaH and plug in moles of benzoic acid (found by dividing by the molecular weight) and the H that they gave us. We can then plug that in to q and divide by the change in temp to find the heat capacity of the calorimeter.

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