Concept explainers
Interpretation:
The amount of water added to 6.0 mL of a 0.050M stock solution to dilute it to 0.020M needs to be determined.
Concept introduction:
Process of decreasing concentration of solute in a solution is dilution. It means addition of more solvent without solvent.
Answer to Problem 5STP
B. 9mL is correct option.
Explanation of Solution
Dilution equation is as follows:
Here
Given,
Put this values in equation (1) is as follows:
Thus volume of dilute solution is 1.5 mL.
Given that stock solution has volume 6.0 mL. From the calculation diluted solution has volume 15 mL. Thus in order to to dilute it water is added to stock solution is
- 15 mL
- 6.0 mL
- 2.4 mL
Subtract diluted solution from given stock solution.
Dilution equation is
Dilution equation is
Chapter 16 Solutions
Chemistry: Matter and Change
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