# What is the concentration (M) of sodium ions in 4.57 L of a 1.25 M #Na_3PO_4# solution?

##### 1 Answer

#### Explanation:

When asked to find the concentration of sodium ions in a given concentration, you need to first find the ratio of ions per molecule.

We see that for every **formula unit** of **ions** of

**Step 1**

We are given

we can derive that

**Step 2**

With the two pieces of information, we can solve straight across;