What volume of dm 3 of water will be added to 1... - JAMB Chemistry 2022 Question
What volume of (dm\(^3\)) of water will be added to 10dm\(^3\) of 2.0 mol/dm\(^3\) HCL acid solution to give a final solution of 0.5 mol/dm\(^3\)?
A
30
B
40
C
20
D
50
correct option: b
For a fixed amount of a dilute solution from a stock solution: C1V1 = C2V2
where:
- V1 = Volume of stock solution needed to make the new solution
- C1 = Concentration of stock solution
- V2 = Final volume of the new solution
- C2 = Final concentration of the stock solution
2 x 10 = 0.5 x V2
20 = 0.5V2
\(\frac{20}{0.5}\) = V2
= 40dm\(^3\)
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