Question

How many equivalent hydrogens does benzene have?

Answer 1

Benzene has one set of six equivalent hydrogens.

One way to identify equivalent hydrogens is to replace each H with a different group and see if you get a different compound.

The structure of benzene is

If I replace any of the six H atoms with a Cl, I'll always get the same compound: chlorobenzene.

So every H atom in benzene is equivalent to every other H atom.