Aug '11
27
MCAT Question of the Day | MCAT Course


  • Q:

    A coffee-cup calorimeter is a simple contraption which utilizes a styrofoam coffee-cup (relatively well-insulated) filled with water, and a thermometer. The cup is filled with 250 g of water and sits at a temperature of 20 °C. A sample is placed in the calorimeter and the heat of the reaction is measured via a thermometer. Which of the following holds true regarding this set up?

     

    A

    Volume is held constant in such a calorimeter

    B

    Less energy is needed to raise the current setup 1 °C than heating 150 g of water 2 degrees

    C

    A bomb calorimeter does not require the utilization of a thermometer

    D

    None of the above - knowledge of the specific heat capacity of water needs to be given to understand the dynamics of the calorimeter set up




    Tags: Thermochemistry | Suggest a tag
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