Bomb Calorimeter – Problem

Bomb Calorimeter

Bomb calorimeter determination  molar enthalpy  combustion. If you have missed your introduction into calorimetery, then this video is for you. The video gets into the introductory concepts of specific heat capacity, heat capacity, and methods to determine the enthalpy changes associated with the combustion of fuels in a calorimeter or a closed system, Calculations can also be used to determine the calorific value of fuels, if you determine the energy released when 1 gram of the fuel is undergoing combustion as opposed to one mole of the substance. Bomb calorimeter determination molar enthalpy combustion

The problem being solved in this video.

A 3.12 gram sample of glucose is allowed to undergo combustion in a bomb Calorimeter containing 775 grams of water. Initial temperature of water is 23.8 degrees Celsius and final temperature is 35.6 degree Celsius. Heat capacity of the calorimeter is 893J/degree C. Specific heat of water is 4.18 J/g.degree C. Calculate Molar Enthalpy of Glucose.

Here is a sample problem for you to solve.

A 0.500 gram sample of naphthalene C10H8 is burned in a bomb calorimeter containing 650 grams of water at an initial temperature t1 of 20oC. After the reaction, the final temperature t2 of water is 26.4oC. The heat capacity of the Calorimeter is 420J/0C. Using these data, calculate the heat of combustion of naphthalene in kJ/mol.

Bomb Calorimeter Quiz

Bomb calorimeter questions

The internal energy of a system is increased by

 
 
 
 

Which of the following is an exothermic process

 
 
 
 

The reaction

4 Al (s) + 3 O2 (g) → 2 Al2O3 (s) ΔH° = -3351 kJ
causes the temperature of its surroundings to increase.
This reaction is __________, and therefore heat is __________ by the reaction.

 
 
 
 

What is the equation used to determine the amount of heat absorbed just by water, in a bomb calorimeter?

 
 
 
 

What is the specific heat of a substance if 373 J is required to raise the temperature of a 312 g sample by 15°C?

 
 
 
 

The specific heat capacity of lead is 0.13 J/(g•°C). How much heat (in J) is required to raise the temperature of 15 g of lead from 22°C to 37°C?

 
 
 
 

The specific heat of liquid bromine is 0.226 J/(g•°C). How much heat (J) is required to raise the temperature of 31.2 g of bromine from 25.00°C to 27.30°C?

 
 
 
 

Hot Coffee is poured into a cold stream of water. Which of the following is true?

 
 
 
 

Question 1 of 8

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