Question

How to make 0.1m perchloric acid from 60% solution?

Answer 1

Perchloric Acid is oily liquid at room temperature. take 10.046 g p(6.0155 ml) and dissolve it into 1000 ml water. If you have azeotropic mixure of perchloric acid with water than it's concentration is around 70-72%. 
i.e., 100 ml pechloric acid contains 70-72% contains 70- 72 g Pechlric acid. 
so, that becomes 11.63-11.98M. 
If you want to make 100 ml 0.1 M then take 1.163 ml (70%) Perchloric acid and dilute it with 100 ml water.

Answer 2

I hope this helps you