You have been asked to make 200ml of 50% detergent solution (v/v). How would you do it?
To make 200ml of a 50% detergent solution (v/v), you'll need to mix a certain amount of pure detergent with a certain amount of diluent (usually water). Here's how you can do it:
1. Determine the amount of pure detergent needed: Since you want a 50% solution, it means that half of the final volume (i.e., 100ml) will be detergent.
2. Calculate the amount of diluent (usually water) needed: The other half of the final volume will be the diluent. So, subtract the amount of detergent (100ml) from the total volume (200ml) to find the amount of diluent required. In this case, it would be 200ml - 100ml = 100ml.
3. Measure the required amounts: Use a graduated cylinder or measuring utensil to measure 100ml of the pure detergent and 100ml of diluent (such as water).
4. Mix the detergent and diluent: Pour the measured 100ml of pure detergent into a container, then add the 100ml of diluent. Mix the solution thoroughly so that the detergent and diluent are well combined.
Now you have a 200ml solution consisting of 100ml of the pure detergent and 100ml of diluent, resulting in a 50% detergent solution (v/v).