Two solution of a substance (non-electrolyte) are mixed in the followi...
Molarity Calculation for Mixed Solutions
To calculate the molarity of the final solution, we need to consider the volumes and concentrations of the two initial solutions. Let's break down the calculation step by step.
Step 1: Calculate the amount of substance in each solution
The amount of substance can be calculated using the formula:
Amount of substance (in moles) = Concentration (in M) × Volume (in liters)
For the first solution:
Amount of substance in the first solution = 1.5 M × 0.480 L = 0.72 moles
For the second solution:
Amount of substance in the second solution = 1.2 M × 0.520 L = 0.624 moles
Step 2: Determine the total amount of substance in the final solution
To find the total amount of substance in the final solution, we simply add the amounts of substance from the two initial solutions:
Total amount of substance = Amount of substance in the first solution + Amount of substance in the second solution
= 0.72 moles + 0.624 moles
= 1.344 moles
Step 3: Calculate the final volume of the solution
The final volume of the solution is the sum of the volumes of the two initial solutions:
Final volume = Volume of the first solution + Volume of the second solution
= 480 mL + 520 mL
= 1000 mL
= 1 L
Step 4: Calculate the molarity of the final solution
The molarity of the final solution is given by the formula:
Molarity = Amount of substance (in moles) / Volume (in liters)
Molarity of the final solution = Total amount of substance / Final volume
= 1.344 moles / 1 L
= 1.344 M
Therefore, the molarity of the final solution is 1.344 M, which corresponds to option C.