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In a bomb calorimeter, the volume is not constant; it is typically operated under constant volume conditions. This means that the reaction occurs in a rigid, sealed container where the volume does not change during the combustion process. The constant volume allows for accurate measurement of the heat released during the reaction, which is essential for calculating the calorific value of the substance being tested.
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Why condensation of water is not included in bomb calorimeter?
In a bomb calorimeter, the primary focus is on measuring the heat released during a chemical reaction at constant volume. The condensation of water is not included because it occurs at a constant temperature and pressure, which can introduce additional heat exchanges and complicate the measurements. Including condensation would also affect the accuracy of the specific heat calculations, as it involves phase changes that do not directly relate to the reaction's heat release. Therefore, the system is designed to minimize such factors for precise calorimetric measurements.
Why bomb calorimeter is called by that name?
In conducting a calorimetric test using a bomb calorimeter, the substance or object to be studied is placed inside the combustion crucible and ignited. The resulting reaction usually occurs so quickly that it resembles the explosion of a bomb-hence, the name "bomb calorimeter."
Function of calorimeter?
A bomb calorimeter is a type of constant-volume calorimeter used in measuring the heat of combustion of a particular reaction. Bomb calorimeters have to withstand the large pressure within the calorimeter as the reaction is being measured. Electrical energy is used to ignite the fuel; as the fuel is burning, it will heat up the surrounding air, which expands and escapes through a tube that leads the air out of the calorimeter. When the air is escaping through the copper tube it will also heat up the water outside the tube. The temperature of the water allows for calculating the calorie content of the fuel.[ or kilojoules if using those units]
What is the principle of Bunsen calorimeter?
The Bunsen calorimeter principle is based on the law of conservation of energy, where the heat released or absorbed in a chemical reaction is equal to the heat gained or lost by the surrounding water in the calorimeter. By measuring the temperature change of the water, one can calculate the heat exchanged in the reaction.
Difference between isothermal and isoperibol calorimeter?
In an isothermal calorimeter, the temperature inside the calorimeter remains constant during the measurement, preventing any heat exchange with the surroundings. In an isoperibol calorimeter, the calorimeter is well-insulated and allows heat exchange with the surroundings, but the heat loss or gain is accurately measured and compensated for.
What are the differences between simple calorimeter and bomb calorimeter?
A simple calorimeter measures heat changes in a substance through temperature changes in water surrounding it, while a bomb calorimeter measures the heat of combustion of a substance by igniting it in a sealed chamber under high pressure. Bomb calorimeters are more precise and accurate than simple calorimeters, but they are also more complex and expensive to operate.
What is the difference between a bomb calorimeter and a coffee cup calorimeter?
A bomb calorimeter is a sealed device used to measure the heat of combustion of a substance under constant volume, typically in a controlled environment, allowing for high-pressure reactions. In contrast, a coffee cup calorimeter is an open system that measures heat changes in reactions occurring at constant pressure, making it suitable for simpler experiments like neutralization or dissolution in aqueous solutions. The bomb calorimeter is designed for high-energy reactions, while the coffee cup calorimeter is more suited for less intense reactions.
What instrument measures the heat released at constant volume?
a calorimeter
What is principle of working of bomb calorimeter?
A bomb calorimeter is a type of constant-volume calorimeter used in measuring the heat of combustion of a particular reaction. Bomb calorimeters have to withstand the large pressure within the calorimeter as the reaction is being measured. Electrical energy is used to ignite the fuel; as the fuel is burning, it will heat up the surrounding air, which expands and escapes through a tube that leads the air out of the calorimeter. When the air is escaping through the copper tube it will also heat up the water outside the tube. The temperature of the water allows for calculating calorie content of the fuel
Why 1000c thermometer is used in bomb calorimeter why not 100c?
bcoz of space in the calorimeter....
What is the bomb calorimeter formula used to calculate the heat released during a chemical reaction?
The bomb calorimeter formula used to calculate the heat released during a chemical reaction is: q C x T where: q heat released (in joules) C calorimeter constant (in joules per degree Celsius) T change in temperature (in degrees Celsius)
Who invented bomb calorimeter?
French scientist and statesman, Berthelot (1827-1907) in 1881
What is the conclusion of the bomb calorimeter experiment to determine the calorific values of fuel by means of a bomb calorimeter?
it is for determining gross calorific value of any coal
Why condensation of water is not included in bomb calorimeter?
In a bomb calorimeter, the primary focus is on measuring the heat released during a chemical reaction at constant volume. The condensation of water is not included because it occurs at a constant temperature and pressure, which can introduce additional heat exchanges and complicate the measurements. Including condensation would also affect the accuracy of the specific heat calculations, as it involves phase changes that do not directly relate to the reaction's heat release. Therefore, the system is designed to minimize such factors for precise calorimetric measurements.
What is bomb caloriemeter?
A bomb calorimeter is a device used to measure the heat of combustion of a substance. It consists of a sealed container (the bomb) where the substance is burned, surrounded by a known amount of water. The heat released during combustion raises the temperature of the water, allowing the calculation of the heat of combustion of the substance.
How do you calculate the heat capacity of a bomb calorimeter?
To calculate the heat capacity of a bomb calorimeter, you can use the formula Q C x T, where Q is the heat absorbed or released, C is the heat capacity of the calorimeter, and T is the change in temperature. By measuring the heat absorbed or released and the change in temperature, you can determine the heat capacity of the bomb calorimeter.
Why bomb calorimeter is called by that name?
In conducting a calorimetric test using a bomb calorimeter, the substance or object to be studied is placed inside the combustion crucible and ignited. The resulting reaction usually occurs so quickly that it resembles the explosion of a bomb-hence, the name "bomb calorimeter."
