### Dilution Problem - Find Final Quantity

9. Altering Product Strength 9.1) Dilution 9.1.1) Dilution

9.1.1.1) Find initial concentration in dilution Easy 1

Total tried:       Correct:       Wrong:

If 21.5 mL of a 23.25 % solution is diluted to a concentration of 5.92 %, then what will be its final volume? Click on the button below to see the answer and explanations

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lb equals 84.5 mL kg

This is a volume expansion or concentration dilution type problem. The essential formula is Q_1C_1 = Q_2C_2.
Here,

Q_1 = initial quantity = 21.5\quadmL.
C_1 = initial concentration = 23.25\quad%
Q_2 = final quantity = ?\quad mL.
C_2 = final concentration = 5.92\quad %

Therefore, rearranging the formula, we get:
Q_2 = (Q_1 × C_1)/(C_2)

therefore Q_2 = (21.5 × 23.25) /5.92=84.5\quad mL (Ans.).

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