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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: ILoveISO on April 04, 2010, 04:07:10 PM

Title: Thermochemistry
Post by: ILoveISO on April 04, 2010, 04:07:10 PM

A 3.30g of glucose (C6H12O6) was burned in a bomb calorimeter to from CO2 and H2O. The temp of the water changed from 22.4 to 34.1 degrees C. If the calorimeter contained 850g of water and had a heat capacity of 847 J/C determine the change in enthalpy for the combustion reaction of glucose.

Super confused, how do I start this question? I used q = cmt

847J/C x 3.30g x (34.1 - 22.4) = 32702 Joules but not sure what next?

Title: Re: Thermochemistry
Post by: Borek on April 04, 2010, 05:18:56 PM

What was heated up?

Title: Re: Thermochemistry
Post by: Schrödinger on April 05, 2010, 01:11:22 AM

Quote from: Borek on April 04, 2010, 05:18:56 PM

What was heated up?

More importantly, why was it heated up?