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Laabri

IMF Free Response Question

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Last updated almost 6 years ago
9 Nsɛmmisa
5

Answer the following questions in terms of principles of chemical bonding and intermolecular forces. In each explanation where a comparison is to be made, a complete answer must include a discussion of both substances. The following complete Lewis electron-dot diagrams may be useful in answering parts of this question.

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Asemmisa {{asɛmmisaAhyɛnsode}}
1.

Group Members Names:

Asemmisa {{asɛmmisaAhyɛnsode}}
2.

At 1 atm and 298 K, pentane is a liquid whereas propane is a gas. Explain.

Asemmisa {{asɛmmisaAhyɛnsode}}
3.

At 1 atm and 298 K, methanol is a liquid whereas propane is a gas. Explain.

Asemmisa {{asɛmmisaAhyɛnsode}}
4.

Indicate the hybridization of the carbon atom in methanol

Asemmisa {{asɛmmisaAhyɛnsode}}
5.

Indicate the hybridization of the carbon atom in methanoic (formic) acid

Asemmisa {{asɛmmisaAhyɛnsode}}
6.

Draw the complete Lewis electron-dot diagram for a molecule of propanoic acid, HC3H5O2 .

Asemmisa {{asɛmmisaAhyɛnsode}}
7.

Explain the following observations about the two carbon-oxygen bonds in the methanoate (formate) anion, HCO2−. You may draw a Lewis electron-dot diagram (or diagrams) of the methanoate ion as part of your explanations.

Observation 1: The two carbon-oxygen bonds in the methanoate (formate) anion, HCO2−, have the same length.

Asemmisa {{asɛmmisaAhyɛnsode}}
8.

Explain the following observations about the two carbon-oxygen bonds in the methanoate (formate) anion, HCO2−. You may draw a Lewis electron-dot diagram (or diagrams) of the methanoate ion as part of your explanations.

Observation 2: The length of the carbon-oxygen bonds in the methanoate (formate) anion, HCO2−, is intermediate between the length of the carbon-oxygen bond in methanol and the length of the carbon-oxygen bond in methanal.

Asemmisa {{asɛmmisaAhyɛnsode}}
9.

What is one question you still have about intermolecular forces?