Attractive forces in hydrocarbons and alcohols Based on your observations of the

Question

Attractive forces in hydrocarbons and alcohols Based on your observations of the hydrocarbon samples, what is the relationship between the number of carbon atoms and the strength of IMFs? Briefly explain. The higher the number of Carbon atoms the lower the resistance to flow or viscosity. Based on your observations of the OH-containing samples, what is the relationship between the number of OH groups and the strength of IMPs? Briefly explain. The smaller the number of OH groups the strongly the IMFS. Lab 10: Intermolecular Forces

Explanation / Answer

1.

We can see that viscosity is proportional to number of carbon

That is higher the number of carbon, higher will be the viscosity

Viscosity is high when intermolecular force (IMF) is high

So we can conclude that higher the number of carbon, higher will be the IMF

2.

Greater the number of OH group, greater will be hydrogen bonding and hence greater the IMF

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