Strengths of H2S vs H2Se

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Madison Gil 3D
Posts: 32
Joined: Fri Sep 28, 2018 12:23 am

Strengths of H2S vs H2Se

Postby Madison Gil 3D » Sat Dec 08, 2018 5:10 pm

In the final review session, it was said that H2Se has a greater boiling point (and therefore stronger bonds) because it has greater London dispersion forces than H2S does. However, in the chemistry textbook version 6 p.484, H2Se is expected to be a stronger acid than H2S because H2Se has weaker bonds. Does having more london dispersion forces make a molecule stronger, or more likely to ionize? And which explanation would be correct?

Lisa Werner 2F
Posts: 72
Joined: Fri Sep 28, 2018 12:17 am

Re: Strengths of H2S vs H2Se

Postby Lisa Werner 2F » Sat Dec 08, 2018 5:30 pm

London dispersion forces are intermolecular forces so they only affect how the molecule interacts with others, not affect bond strength.

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