Question

17) An ethanol solution has a concentration of 0.500M. What volume in liters of this solution

would contain 8.0 moles of ethanol?

Answer 1

Examples:

Convert 750 mL to liters:

• Liters of solution = mL of solution x (1 L/1000mL)

• Liters of solution = 750 mL x (1 L/1000 mL)

• Liters of solution = 0.75 L

The Answer:

• Divide the mass of the solute by the total volume of the solution. Write out the equation C = m/V, where m is the mass of the solute and V is the total volume of the solution. Plug in the values you found for the mass and volume, and divide them to find the concentration of your solution.

To calculate the Molar Concentration, we will find the molar concentration by dividing the moles by liters of water used in the solution. For example, the acetic acid here is completely dissolved in 1.25 L of water. Then divide 0.1665 moles by 1.25 L to get the molar concentration, which will be 0.1332 M.

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