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起止时间:2021-04-10到2021-07-26
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Chapter 1 The reaction heat
1、 Which term is not the state function?
A:enthalpy
B:internal energy
C:heat
D:mass
答案: heat
2、 Which term is not the state function?
A:work
B:volume
C:entropy
D:Gibbs free energy
答案: work
3、 Which processe is exothermic?
A:boil water
B:melt ice
C:evaporate water
D:freeze water
答案: freeze water
4、 Which processes is endothermic?
A:C(s) + O2(g)=CO2(g)
B:2H2(g) + O2(g)=2H2O(l)
C:2NH3(g)=3H2(g) + N2(g)
D:2C(s) + O2(g)=2CO(g)
答案: 2NH3(g)=3H2(g) + N2(g)
5、 For a system, suppose it adsorb 100 kJ of heat from the surroundings and do 50 kJ of work to the surroundings, how much is its internal energy change?
A:+150kJ
B: -150 kJ
C:50 kJ
D:-50 kJ
答案: 50 kJ
6、 Which standard molar enthopy of formation is zero?
A:CO2
B:C (diamond)
C:NH3
D:O2
答案: O2
7、 In the following reactions, which ΔrHmΘ is equal to the ΔfHmΘ?
A:1/2N2 (g) + 3/2H2(g) = NH3(g)
B: CaCO3(s) = CaO(s) + CO2(g)
C:NaOH (aq) + HCl(aq) = NaCl(aq) + H2O(l)
D:CO(g) + 1/2O2(g) = CO2(g)
答案: 1/2N2 (g) + 3/2H2(g) = NH3(g)
8、 Which item is equal to the reaction heat in the constant volume process of closed system?
A:∆S
B:-PV
C:∆U
D:∆G
答案: ∆U
9、 Which item is equal to the enthalpy?
A:U+PV
B:U-PV
C: U-TV
D:U+TV
答案: U+PV
10、 For the reaction, CO(g)+1/2O2(g)=CO2(g) ∆H= -280.0 kJ/mol and C(s)+O2(g)=CO2(g) ∆H= -393.5 kJ/mol, how much is the reaction heat of C(s)+1/2O2(g)=CO(g)?
A:113.5 kJ/mol
B:-113.5 kJ/mol
C:-673.5 kJ/mol
D:673.5 kJ/mol
答案: -113.5 kJ/mol
11、 For a reaction, if it releases 398 kJ/mol of heat in the forward process, how much is the heat of its reverse process?
A:398 kJ/mol
B:-398 kJ/mol
C: 0 kJ/mol
D:unknown
答案: 398 kJ/mol
12、 In which case the reaction heat is equal to the enthalpy change?
A:The process of constant pressure for a closed system
B:The process of constant volume for a closed system
C:The process of constant pressure for an opened system
D:The process of constant volume for an opened system
答案: The process of constant pressure for a closed system
13、 Under standard state，the enthalpy change of △rHmΘ for the reaction C(graphite) + O2(g) =CO2(g) is equal to the △fHmΘ of CO2.
A:正确
B:错误
答案: 正确
14、 The change of work in any process can be calculated by ΔW=W2-W1
A:正确
B:错误
答案: 错误
15、 The following item of △H, H, S and T are all state function.
A:正确
B:错误
答案: 错误
16、 According to the Hess law, the reaction heat is state function.
A:正确
B:错误
答案: 错误
17、 The internal energy of a system is state function.
A:正确
B:错误
答案: 正确
Chapter 2 The direction and equilibrium of reaction
1、 Which substance has the biggest entropy?
A:H2O(l)
B:NaCl (s)
C:N2 (g)
D:CaCO3(s)
答案: N2 (g)
2、 Which value is zero at standard state?
A:SmΘ (standard entropy)
B:GmΘ (standard Gibbs free energy)
C:ΔfHmΘ (standard enthalpy of formation)
D:UmΘ (internal energy)
答案: ΔfHmΘ (standard enthalpy of formation)
3、 Which entropy change is positive?
A:O2(g)+2H2(g)=2H2O(g)
B:CaCO3(s)=CaO(s)+CO2(g)
C:N2(g)+3H2(g)=2NH3(g)
D:2Mg(s)+O2(g)=2MgO(s)
答案: CaCO3(s)=CaO(s)+CO2(g)
4、 Which reaction is spontaneous under the standard state?
A:1/2N2 (g) + 3/2H2(g) = NH3(g) ΔrGmΘ= -16.5kJ/mol
B:CaCO3(s) = CaO(s) + CO2(g) ΔrGmΘ=130.4kJ/mol
C:H2O(l) = H2(g) +1/2O2(g) ΔrGmΘ=237.2kJ/mol
D:CO2(g) = C(s) + O2(g) ΔrGmΘ=394.4kJ/mol
答案: 1/2N2 (g) + 3/2H2(g) = NH3(g) ΔrGmΘ= -16.5kJ/mol
5、 Which case is favored for the reaction occurred spontaneouly with temperature increasing?
A:ΔrHmΘ＞0, ΔrSmΘ＜0
B: ΔrHmΘ＞0, ΔrSmΘ＞0
C:ΔrHmΘ＜0, ΔrSmΘ＜0
D:uncertain
答案: ΔrHmΘ＞0, ΔrSmΘ＞0
6、 Which function is affected by the temperature obviously?
A:ΔrHmΘ
B:ΔrSmΘ
C:ΔrGmΘ
D:QP
答案: ΔrGmΘ
7、 For the reaction 2SO3(g)=2SO2(g)+O2(g), it’s KpΘ is 32，if the equilibrium concentration of [SO3]=[O2]=2.0mol·L-1 , how much is the equilibrium concentration of SO2?
A: 0.032 mol·L-1
B:8.0 mol·L-1
C:0.25 mol·L-1
D:2.7 mol·L-1
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