Answer:
The molarity of the 100ml solution is 3.984 M.
Step-by-step explanation:
The molarity of the 100ml solution can be calculated using the formula:
Molarity = (moles of solute) / (volume of solution in liters)
First, we need to calculate the moles of solute present in the original 500ml solution:
Moles of KI = (50g / 166.0028 g/mol) = 0.300 mol Moles of I2 = (25g / 253.808 g/mol) = 0.0984 mol
Total moles of solute = 0.300 + 0.0984 = 0.3984 mol
Next, we need to calculate the volume of the 100ml solution in liters:
Volume of 100ml solution = 100ml / 1000ml/L = 0.1 L
Finally, we can use the formula to calculate the molarity of the 100ml solution:
Molarity = 0.3984 mol / 0.1 L = 3.984 M
Therefore, the molarity of the 100ml solution is 3.984 M.