Question

If you were to resolve an unknown complex, M(en)3 3+, how would you know whether or not your resolved products are optically pure?

Answer 1

An optically active compound will rotates the plane polarised light passed throgh a polarimeter either to the right or to left side( dextro rotatory and leavo rotatory). That particular mixture contain both dextro and leavo is called recimic mixture. So, if the plane polarised light does't rotated by the sample means which optically inactive or pure.

Here the central metal connected to the same type of ligand, bulkiest ethylene diammine. so to check the recimic mixture formation, you should conduct the polarimeter experiment.