Complete the mechanism for the reaction of 2-butanol in sulfuric acid at 140 °c by adding any missing atoms, bonds, charges, nonbonding electrons, and curved arrows. note the use of a generic alcohol to represent another 2-butanol introduced in panel three.

2-Butene

Explanation:

The first step is the ionization of the acid to produce the hydronium ion. Then the OH will attack this ion to produce a charged species that can be stabilized when H2O is produced.

Then an elimination takes place to produce the more substituted alkene 2-butene and the hydronium ion is gain produced.

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).