# How much would a dosage of 12ml 10% Potassium Iodide (KI) w/v solution increase Iodide levels in a total voluve of 800 liters?

##### 1 Answer

0.009 mM.

#### Explanation:

The concentration of iodide, or

First, start by figuring out exactly how much iodide you'll be adding to the tank. Use the given **12 mL**.

A

In your case, a **10% w/v solution** would have **10 g** of potassium iodide for every **100 mL** of solution. As a result, the **12-mL** sample will contain

Use potassium iodide's molar mass to determine how many moles you get from that mass

Now, because potassium iodide fully dissociates in aqueous solution into

It is safe to assume that the added

Therefore, the added concentration of iodide in the tank will be

Rounded to one sig fig, the number of sig figs in 800 L, the answer will be

**SIDE NOTE**. *Keep in mind that the concentration is milimolar, not molar*.