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If I made a solution with 50g KI and 25g I2 dissolved in 500ml H2O and I used a 100ml of the 500ml solution, what is the molarity of the 100ml?

User Shatiz
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2 Answers

6 votes

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.

User VenVig
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6 votes

Answer:

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User Shome
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