De or het kaliumverbinding?

The correct Dutch article is:

de kaliumverbinding

Rule Words ending in -ing: almost always de. See the rule

How to use kaliumverbinding

the kaliumverbindingde kaliumverbinding
this kaliumverbindingdeze kaliumverbinding
that kaliumverbindingdie kaliumverbinding
our kaliumverbindingonze kaliumverbinding
your kaliumverbindingjouw kaliumverbinding
every kaliumverbindingelke kaliumverbinding
which kaliumverbinding?welke kaliumverbinding?
a big kaliumverbinding / the big kaliumverbindingeen grote kaliumverbinding, de grote kaliumverbinding