Find the Amount of Diluent Needed when Preparing a Solution of Lower Strength
✔ https://StudyForce.com
✔ https://Biology-Forums.com
✔ Ask questions here: https://Biology-Forums.com/index.php?...
Follow us:
▶ Facebook: / studyforceps
▶ Instagram: / biologyforums
▶ Twitter: / studyforceps
When given the quantity and strength of a solution, it is possible to determine how much diluent should be added to reduce its strength as desired by first calculating the quantity of weaker solution that can be made and then subtracting from this the original quantity.
Q1. How much water (in milliliters) should be added to 300 mL of a 1 : 750 w/v solution of benzalkonium chloride to make a 1 : 2500 w/v solution?
Q2. How much water (in milliliters) should be added to 1 pt. of a 5% w/v solution of boric acid to make a 2% w/v solution?
Q3. How much water (in milliliters) should be added to 375 mL of a solution containing 0.5 g of benzalkonium chloride to make a
1 : 5000 solution?