Question

What are the names of these binary acids: `HCl` and `H_2S`?

Answer 1

See explanation below:

Explanation:

Binary acid number `1`: Hydrochloric acid
Binary acid number `2`: Hydrosulfuric acid
This is a great source: http://www.sciencegeek.net/Chemistry/chempdfs/NamingAcids.pdf

All the best!