What is passive voice for (do it as soon as you reach home)

Answer 1

From the Internet:

The passive voice is a grammatical "voice". The noun or noun phrase that would be the object of a corresponding active sentence (such as "Our troops defeated the enemy") appears as the subject of a sentence or clause in the passive voice ("The enemy was defeated by our troops")

Possibilities:

It was done as soon as you reached home.

It will be done as soon as you reach home.