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1 | |
Which one of the following compounds is most likely to be ionic? |
| | A) | HNF2 |
| | B) | H2CO |
| | C) | N2H4 |
| | D) | CaCl2 |
| | E) | ICl |
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2 | |
Based on ionic radii and charges, which of the following solids would have the greatest lattice energy? |
| | A) | SrO |
| | B) | CsI |
| | C) | MgCl2 |
| | D) | KF |
| | E) | NaF |
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3 | |
In Ba(CN)2, the bonding is |
| | A) | essentially ionic. |
| | B) | essentially covalent. |
| | C) | both ionic and covalent. |
| | D) | neither ionic nor covalent. |
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4 | |
Which of the following represents the most polar bond? |
| | A) | B-C |
| | B) | S-O |
| | C) | C-O |
| | D) | B-O |
| | E) | C-C |
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5 | |
Which of the Lewis structure(s) is(are) incorrect? |
| | A) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072512644/17477/ch9quizaq5a.gif','popWin', 'width=120,height=116,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (1.0K)</a>]]> |
| | B) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072512644/17477/ch9quizaq5b.gif','popWin', 'width=121,height=119,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (1.0K)</a>]]> |
| | C) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072512644/17477/ch9quizaq5c.gif','popWin', 'width=135,height=114,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (1.0K)</a>]]> |
| | D) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072512644/17477/ch9quizaq5d.gif','popWin', 'width=131,height=99,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> |
| | E) | C and D. |
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6 | |
All of the following molecules contain only single bonds except |
| | A) | H2O2 |
| | B) | Cl2 |
| | C) | CH4 |
| | D) | H2O |
| | E) | SO2 |
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7 | |
The formal charge on the nitrogen atom in the nitrate ion is |
| | A) | +2 |
| | B) | +1 |
| | C) | 0 |
| | D) | -1 |
| | E) | -2 |
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8 | |
The sulfate ion is tetrahedral with four equal S-O distances of 149 pm. Which of the following is the most reasonable structure consistent with these facts? |
| | A) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072512644/17477/ch9quizaq8a.gif','popWin', 'width=189,height=188,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> |
| | B) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072512644/17477/ch9quizaq8b.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> |
| | C) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072512644/17477/ch9quizaq8c.gif','popWin', 'width=185,height=182,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> |
| | D) | None of the above. |
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9 | |
In which of the following species does the central atom violate the octet rule? |
| | A) | CH4 |
| | B) | SF4 |
| | C) | PCl4+ |
| | D) | CCl3+ |
| | E) | NH3 |
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10 | |
Estimate the enthalpy change for the reaction below given the following bond energies: C2H4(g) + H2(g) ----> C2H6(g) BE(H-H) = 436 kJ/mol; BE(C-H) = 414 kJ/mol; BE(C-C) = 347 kJ/mol; BE(C=C) = 620 kJ/mol. |
| | A) | -119 kJ |
| | B) | +119 kJ |
| | C) | -392 kJ |
| | D) | +392 kJ |
| | E) | None of the above. |
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