You are given one litre of 0.15 M HCl and one litre of 0.40 M HCl. What is the maximum volume of 0.25 M HCl which you can make from these solutions without adding any water ?

Explanation

To solve the problem of finding the maximum volume of 0.25 M HCl that can be made from 1 liter of 0.15 M HCl and 1 liter of 0.40 M HCl without adding any water, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Given Information**:
- You have 1 liter of 0.15 M HCl (let's call this Solution A).
- You have 1 liter of 0.40 M HCl (let's call this Solution B).
- You want to create a solution with a concentration of 0.25 M HCl.
...