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H3O+ Preferred over H+

1. Explain why some authors never write H+, but always write H3O+.

2. Any + ion in solution is attracted to the polar water molecules, but we often write Na+ ignoring the water. What is different about H+ that many chemists never write it alone?

3. Explain why choloracetic acid is a stronger acid than acetic acid.

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1. Explain why some authors never write H+, but always write H3O+.

H3O+ is hydronium ion (sometimes abbreviated as H+ by chemists). It is the basis of pH measurement. It is present in water at a concentration of 10^-7 per liter, and much higher if a strong acid (such as HCl) is added to water.
Actually H+ is a short hand way of writing H+ in water. H+ in water is found bonded to a water molecule and therefore it is written as H3O+.

It is not terribly ...

Solution Summary

This solution explains why some authors never write H+, but always write H3O+. It then explains why H+ is never written alone by many chemists. Lastly, it provides reason for choloracetic acid being a stronger acid than acetic acid.

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