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d. Metal oxides are usually basic.<br />
e. Acid anhydrides are molecular.<br />
____ 165. Which response includes all of the following oxides that are basic anhydrides and no others?<br />
I. N2O<br />
II. P4O6<br />
III. CaO<br />
IV. OF2<br />
a. I and II<br />
b. II<br />
c. III<br />
d. IV<br />
e. III and IV<br />
____ 166. Which of the following oxides does not give an acidic solution when dissolved in water?<br />
a. SO2<br />
b. CO2<br />
c. N2O5<br />
d. P4O10<br />
e. Na2O<br />
____ 167. One of the following oxides is insoluble in water. Which one?<br />
a. CO2<br />
b. N2O5<br />
c. SO2<br />
d. SiO2<br />
e. SO3<br />
____ 168. Arrange the following in order of increasing acidic character (most acidic at the right).<br />
Al2O3, Na2O, N2O5<br />
a. Al2O3 < Na2O < N2O5<br />
b. N2O5 < Al2O3 < Na2O<br />
c. Al2O3 < N2O5 < Na2O<br />
d. Na2O < Al2O3 < N2O5<br />
e. Na2O < N2O5 < Al2O3<br />
____ 169. Write the balanced formula unit equation for the reaction of rubidium, Rb, with oxygen use the major<br />
product). What is the sum of the coefficients?<br />
a. 3<br />
b. 7<br />
c. 8<br />
d. 4<br />
e. 5<br />
____ 170. Which of the following metal oxides would not be expected to form under conditions of limited oxygen?<br />
a. FeO<br />
b. PbO<br />
c. Cu2O
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