If you have 200ml of 25% aqueous solution of ethanol, what volume of ethanol and water are in the solution?
200mL*(.25)=volume of ethanol in mL
200mL- volume of ethanol=volume of H2O mL
To determine the volume of ethanol and water in the solution, we can use the concept of percent concentration.
Given:
Total volume of solution (V) = 200 mL
Percent concentration of ethanol (C) = 25%
Step 1: Calculate the volume of ethanol in the solution.
The percent concentration represents the amount of solute (ethanol) per 100 mL of solution. So, for a 25% ethanol solution, there is 25 mL of ethanol in 100 mL of solution.
Using this information, we can calculate the volume of ethanol in 200 mL of solution as follows:
Volume of ethanol = (percent concentration / 100) * Total volume of solution
= (25 / 100) * 200 mL
= 0.25 * 200 mL
= 50 mL
Therefore, the volume of ethanol in the solution is 50 mL.
Step 2: Calculate the volume of water in the solution.
Since the total volume of the solution is given as 200 mL and we now know the volume of ethanol is 50 mL, we can find the volume of water by subtracting the volume of ethanol from the total volume:
Volume of water = Total volume of solution - Volume of ethanol
= 200 mL - 50 mL
= 150 mL
Therefore, the volume of water in the solution is 150 mL.
In summary, for a 200 mL solution with a 25% concentration of ethanol, there are 50 mL of ethanol and 150 mL of water.