What is the molarity of a solution containing 5. 035 grams of FeCl3 in enough water to make 500 ml of solution?
To calculate the molarity of the solution, we need to know the number of moles of FeCl3 and the volume of the solution in liters.
Step 1: Calculate the number of moles of FeCl3.
molar mass of FeCl3 = 162.2 g/mol
moles of FeCl3 = mass / molar mass
moles of FeCl3 = 5.035 g / 162.2 g/mol
moles of FeCl3 = 0.031 moles
Step 2: Convert the volume to liters.
500 ml = 0.5 liters
Step 3: Calculate the molarity.
molarity = moles / volume (in liters)
molarity = 0.031 moles / 0.5 liters
molarity = 0.062 M
Therefore, the molarity of the solution containing 5.035 grams of FeCl3 in enough water to make 500 ml of solution is 0.062 M.
To calculate the molarity of a solution, you need to know the number of moles of solute and the volume of the solution in liters.
Let's first find the number of moles of FeCl3.
The molar mass of FeCl3 (iron(III) chloride) can be calculated by adding the atomic masses of its elements:
Fe = 55.845 g/mol
Cl = 35.453 g/mol (x3 as there are three chloride ions in FeCl3)
Molar mass of FeCl3 = 55.845 g/mol + (35.453 g/mol * 3) = 162.204 g/mol
Next, we can calculate the number of moles of FeCl3 using the given mass and molar mass:
Number of moles = Mass / Molar mass
Number of moles = 5.035 g / 162.204 g/mol
Now, we need to convert the volume of the solution from milliliters (mL) to liters (L).
Volume of solution = 500 mL = 500 mL / 1000 mL/L = 0.5 L
Finally, we can calculate the molarity of the solution using the formula:
Molarity (M) = Number of moles / Volume of solution in liters
Molarity = (5.035 g / 162.204 g/mol) / 0.5 L
Now, let's substitute the values and calculate:
Molarity = 0.0310 mol / 0.5 L
Molarity = 0.062 M
Therefore, the molarity of the solution is 0.062 M.