Review questions

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Review questions

Postby sarahtang4B » Fri Dec 07, 2018 8:30 pm

Discuss the forces present in H2S and H2Se, explain why H2Se has a higher boiling point.

Can somebody help me understand how to do this, I am confused how to know which one gets a higher boiling point because of forces.

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Re: Review questions

Postby spark99 » Fri Dec 07, 2018 9:01 pm

H2Se has a higher boiling point because it has a larger London dispersion force. You can figure this out because Se is larger than S, and the bigger the molecule, the bigger the dispersion force. The larger the intermolecular forces, the higher the boiling point will be.

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