Chemistry

Solution Dilution Calculator

Find how much stock solution to dilute to a target concentration.

Calculated Output

Stock volume needed (V1) (mL) 100

Solvent to add (mL) 400

Formula: C1·V1 = C2·V2 → V1 = C2·V2 ÷ C1

Step-by-Step Breakdown

1. Values used:

2. Stock concentration (C1) = 5 M

3. Final concentration (C2) = 1 M

4. Final volume (V2) = 500 mL

6. Stock volume needed (V1) = 100mL

7. Solvent to add = 400mL

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The math behind it

The dilution equation C1·V1 = C2·V2 rearranges to V1 = C2·V2 ÷ C1. Add solvent up to the final volume V2.

5 M stock to 1 M in 500 mL → V1 = 1 × 500 ÷ 5 = 100 mL stock + 400 mL solvent.

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