2016年11月IB化学SL真题下载-Paper1
1. Which change of state is exothermic?
A. CO2 (s) → CO2 (g)
B. H2O (l) → H2O (g)
C. NH3 (g) → NH3 (l)
D. Fe (s) → Fe (l)
2. Which volume, in cm3, of 0.20 mol dm-3 NaOH (aq) is needed to neutralize 0.050 mol of H2S (g)?
H2S (g) + 2NaOH (aq) → Na2S (aq) + 2H2O (l)
A. 0.25
B. 0.50
C. 250
D. 500
3. The complete combustion of 15.0 cm3 of a gaseous hydrocarbon X produces 60.0 cm3 of carbon dioxide gas and 75.0 cm3 of water vapour. What is the molecular formula of X? (All volumes are measured at the same temperature and pressure.)
A. C4H6
B. C4H8
C. C4H10
D. C6H10
4. 5.0 mol of Fe2O3 (s) and 6.0 mol of CO (g) react according to the equation below. What is the limiting reactant and how many moles of the excess reactant remain unreacted?
5. Which is correct for the line emission spectrum for hydrogen?
A. Line M has a higher energy than line N.
B. Line N has a lower frequency than line M.
C. Line M has a longer wavelength than line N.
D. Lines converge at lower energy.
6. What is the condensed electron configuration of the Fe2+ ion?
A. [Ar]3d6
B. [Ar]3d44s2
C. [Ar]3d54s1
D. [Ar]3d64s2
7. Which equation represents the first electron affinity of chlorine?
A. Cl (g) + e- → Cl- (g)
B.1/2Cl2 (g) + e- → Cl- (g)
C. Cl+ (g) + e- → Cl (g)
D. Cl (g) → Cl+ (g) + e-
8. Which solution forms when phosphorus(V) oxide, P4O10, reacts with water?
9. Which pair of molecules has the same bond angles?
A. PCl3 and BCl3
B. SO2 and CO2
C. H2O and NH3
D. CCl4 and SiH4
10. The C=N bond has a bond length of 130 pm and an average bond enthalpy of 615 kJ mol-1.Which values would be most likely for the C-N bond?
2016年11月IB化学SL真题余下省略！
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