The optically active tartaric acid is named as D-(+)-tartaric acid because it has a positive.

The optically active tartaric acid is named as D-(+)-tartaric acid bec

1.	The optically active tartaric acid is named as D-(+)-tartaric acid because it has a positive.
Answer» optical rotation and is DERIVED from D-glucose PH in organic SOLVENT optical rotation and is derived from D-(+)-glyceraldehyde optical rotation only when SUBSTITUTED by deuterium Solution :In D-(+)-tartaric acid (+) INDICATES optical rotation & .D. indicates the configuration that is derived from D-glyceraldehyde.