The Bond Energy Quiz! Chemistry Trivia!
(175).jpg "The Bond Energy Quiz! Chemistry Trivia!")
Are you familiar with bond energy, and do you think you know enough to pass this quiz? When a bond is strong, there is superior bond energy because it takes more energy to break a strong bond. This strength is associated with bond order and bond length. The shorter the bond interval, the greater bond energy because it ignited increased electric attraction. Try this quiz and find out how much you know about bond energy.
- 1.Calculate the quantity of released heat of combustion of 5.76g of methane gas (CH4) in an excess amount of oxygen gas at constant pressure CH4(g)+2O2(g)→ CO2(g)+2H2O(l) , ∆H°= -890kj/mol ,(C=12,H=1)
- A.
320.4
- B.
-2472
- C.
-320.4
- D.
2472
- 2.Calculate ∆H for the reaction of SO2 with O2 , SO2(g)+2O2(g)→2SO3(g) , ∆H°f(SO2)= -296.8kj/mol , ∆H°f(SO3)=-395.7kj/mol
- A.
-98.9
- B.
197.8
- C.
none of them
- D.
-197.8
- 3.∆H°f for the formation of the rust (Fe2O3) is -826 kj/mol, how much energy is involved in the formation of 5 gm of rust?
- A.
25.9 kj
- B.
66 kj
- C.
25.9 j
- D.
66 j
- 4.To calculate the amount of heat absorbed as a substance melts, which of the following information is not needed?
- A.
The mass of the substance
- B.
The change in temperature
- C.
The specific heat of the substance
- D.
The density of the sample
- 5.If one energy level diagram shows a much larger fall from the reactants to the products when compared with another energy level diagram what would these tell you?
- A.
Less exothermic
- B.
More energy is released
- C.
Endothermic reaction
- 6.In the following reaction : CH4(g)+Br2(g)→CH3Br(g)+HBr(g) Bond - energy Br-Br=193kj/mol C-Br =276kj/mol C-H =413kj/mol H-Br =366kj/mol Is these reaction exothermic or endothermic reaction ?
- A.
Exothermic reaction
- B.
Endothermic reaction
- 7.Calculate the molar enthalpy for water vapour from the following reaction CH4(g)+H2O(l)→CH3OH(g)+H2(g)+78 , the molar enthalpy for CH4 &CH3OH are 75 kj/mol , 239 kj/mol respectively
- A.
86 kj/mol
- B.
239kj/mol
- C.
-239kj/mol
- D.
-86kj/mol
- 8.When 80 gm of ammonium nitrate are dissolved in an amount of water to form 1 L of solution ,then temperature decrease from 20°C to 14°C , calculate the enthalpy for the reaction(N=14,O=16,H=1)
- A.
- 25080
- B.
2580
- C.
25080
- D.
None of them
- 9.
![Calculate the energy change required to produce 3 mol of glucose
Bond
Energy (kj/mol)
C-C
C=C
C-O
C=O
C-H
O-H
347
602
358
799
413
464
- ProProfs]( "Calculate the energy change required to produce 3 mol of glucose
Bond
Energy (kj/mol)
C-C
C=C
C-O
C=O
C-H
O-H
347
602
358
799
413
464")
Calculate the energy change required to produce 3 mol of glucose Bond Energy (kj/mol) C-C C=C C-O C=O C-H O-H 347 602 358 799 413 464- A.
-8148
- B.
12440
- C.
8148
- D.
-12440
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