Answer :
To prepare 225mL of a 1.5M sodium dodecyl sulfate(SDS) solution, you will need 96.94g of SDS dissolved in 0mL of water.
Step 1: Calculate the amount of SDS needed
To prepare a 1.5M SDS solution using 225mL, you need to first calculate the number of moles of SDS required. The formula to calculate moles is:
Moles = Molarity x Volume (in liters)
Converting the given volume of solution to liters:
Volume = 225mL = 225/1000 L = 0.225 L
Substituting the values into the formula:
Moles = 1.5M x 0.225 L = 0.3375 moles
Step 2: Calculate the mass of SDS needed
The molar mass of SDS (sodium dodecyl sulfate) is approximately 288.38 g/mol. Calculating the mass of SDS required:
Mass = Moles x Molar mass
Substituting the values into the formula:
Mass = 0.3375 moles x 288.38 g/mol = 96.94 g
Step 3: Calculate the amount of water needed
To prepare the solution, you will need to dissolve the calculated mass of SDS in the appropriate amount of water. As the final volume of the solution should be 225mL, you can calculate the amount of water needed by subtracting the volume of SDS solution from the desired total volume:
Water volume = Total volume - SDS volume
Substituting the values into the formula:
Water volume = 225 mL - 225 mL = 0 mL
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