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How many milliliters of 0.2560 M KCl solution will contain 20.00 g of KCl? Answer is 1048 mL solution but how do I get to the answer?
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Answers ( )
Answer:
1048 mL
Explanation:
Step 1: Given data
Step 2: Calculate the moles corresponding to 20.00 g of KCl
The molar mass of KCl is 74.55 g/mol.
20.00 g × 1 mol/74.55 g = 0.2683 mol
Step 3: Calculate the volume of the solution
Molarity is equal to moles of solute divided by liters of solution.
M = moles of solute / volume of solution
volume of solution = moles of solute / M
volume of solution = 0.2683 mol / (0.2560 mol/L)
volume of solution = 1.048 L = 1048 mL