6-3: Bomb Calorimetry
Chapter 6

Dr. Robert Belford & Rebekah Reinhart




Question 1
2.75 grams of ethanol, C2H5OH(l) was combusted in a bomb calorimeter whose specific heat was 5.126 kJ/oC. The temperature increased from 25.00oC to 32.85oC. Calculate the heat of combustion per gram of ethanol.

(A)  -40.239 kJ/g
(B)  -14.6 kJ/g
(C)  -110.7 kJ/g
(D)  NOTA
 
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Question 2
2.75 grams of ethanol, C2H5OH(l) was combusted in a bomb calorimeter whose specific heat was 5.126 kJ/oC. The temperature increased from 25.00oC to 32.85oC. Calculate the heat of combustion per mole of ethanol.

(A)  -40.239 kJ/mol
(B)  -680. kJ/mol
(C)  -14.6 kJ/mol
(D)  NOTA
 
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Question 3
2.500 grams of benzoic acid, C7H6O2(s) was combusted in a bomb calorimeter whose specific heat was 5.763 kJ/oC. The temperature increased from 25.00oC to 37.15oC. Calculate the heat of combustion per gram of benzoic acid.

(A)  -27.99 kJ/g
(B)  -69.98 kJ/g
(C)  -175.0 kJ/g
(D)  NOTA
 
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Question 4
2.500 grams of benzoic acid, C7H6O2(s) was combusted in a bomb calorimeter whose specific heat was 5.763 kJ/oC. The temperature increased from 25.00oC to 37.15oC. Calculate the heat of combustion per mole of benzoic acid.l

(A)  -27.99 kJ/mol
(B)  -2.5000 * 103 kJ/mo
(C)  -3.4181 * 103 kJ/mo
(D)  NOTA
 
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Question 5
Calculate the heat of a reaction of 5.000g of glucose, C6H12O6(s), in a bomb calorimeter whose specific heat is 6.173 kJ/oC. The temperature increased from 23.60oC to 29.80oC.

(A)  -38.3 kJ
(B)  -69.8 kJ
(C)  26.4 kJ
(D)  NOTA
 
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Question 6
Are the previous reactions in this quiz exothermic or endothermic?

(A)  Endothermic
(B)  Exothermic
(C)  Both
(D)  Neither
 
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