2013年11月IB化学SL真题下载-Paper1
1. What is the total number of oxygen atoms in 0.200 mol of glucose, C6H12O6 ?
A. 1.20
B. 6.00
C. 1.20×1023
D. 7.22×1023
2. Which represents an empirical formula?
A. C2H4
B. B2H6
C. Al2O3
D. C6H6
3. What are the coefficients of H2SO4 (aq) and H3PO4 (aq) when the following equation is balanced using the smallest possible whole numbers?
4. What is the pressure, in Pa, if 3 mol of gas occupies 500 cm3 at 25C°?
5. 7.102 g of Na2SO4(142.04gmol-1)M−= is dissolved in water to prepare 0.5000 dm3 of solution. What is the concentration of Na2SO4 in mol dm–3?
A. 2.500×10–2
B. 1.000×10–1
C. 1.000×10
D. 1.000×102
6. What are the numbers of neutrons and electrons in the iodine ion, 125I+?
7. In the emission spectrum of the hydrogen atom, which electronic transition would produce a line in the ultraviolet region of the electromagnetic spectrum?
A. n=1→n=3
B. n=3→n=1
C. n=3→n=2
D. n=10→n=2
8. Which statements are correct for magnesium?
- I. The electron arrangement of the atom is 2,8,2.
- II. The atom has two electrons in its outermost (valence) energy level.
- III. Its oxide is basic.
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
9. Which series is arranged in order of increasing radius?
A. F<Cl−<Cl
B. Rb<K<Na
C. Al3+<Mg2+<Na+
D. I-<Br−<Cl−
10. What is the formula of calcium nitride?
A. Ca3N2
B. Ca2N3
C. Ca(NO2)2
D. Ca(NO3)2
2013年11月IB化学SL真题余下省略！
你可能还关注