What is the molarity of 0.2 moles of iron (III) chloride dissolved in 0.5 L of the solution?

Explanation

To find the molarity of iron (III) chloride in the solution, we can follow these steps:

### Step 1: Understand the formula for molarity
Molarity (M) is defined as the number of moles of solute divided by the volume of the solution in liters. The formula is:
\[ \text{Molarity (M)} = \frac{\text{Number of moles of solute}}{\text{Volume of solution in liters}} \]

### Step 2: Identify the given values
From the question, we have:
- Number of moles of iron (III) chloride (FeCl₃) = 0.2 moles
- Volume of the solution = 0.5 liters

### Step 3: Substitute the values into the formula
Now, we can substitute the given values into the molarity formula:
\[ M = \frac{0.2 \text{ moles}}{0.5 \text{ L}} \]

### Step 4: Perform the calculation
Now, we calculate the molarity:
\[ M = \frac{0.2}{0.5} = 0.4 \text{ M} \]

### Step 5: State the final answer
The molarity of the iron (III) chloride solution is:
\[ \text{Molarity} = 0.4 \text{ M} \]

---