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The Bomb Calorimeter

Extracts from this document...

Introduction

The Bomb Calorimeter

What is it used for?

The bomb calorimeter is used to determine the HV (heating value) of a solid or liquid fuel by burning the sample and transferring the heat produced into a known mass of water.  From the mass of the fuel and the temperature rise of the water, we can

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Middle

•An oxygen cylinder is connected to the bomb

•The precision thermometer and stirrer are fixed in place

•Exactly 2000cm³ of distilled water is placed into the container

•The container is sealed

•A large current is passed through the sample

Why is the Bomb Calorimeter so accurate?

1.        Exactly 2000cm³ of distilled water is used in the

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Conclusion

5.        A precision balance (accurate to 0.001g) is used to provide an accurate mass rather than weighing the sample on a top-pan balance

6.        The calorimeter is sealed in one unit to prevent heat loss that otherwise would occur

7.        Using electricity to heat the sample prevents heating of the water by the Bunsen Burner and ensures all of the sample is combusted

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This student written piece of work is one of many that can be found in our AS and A Level Probability & Statistics section.

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