Dilution calculator (C1V1 = C2V2)

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Result

Stock volume V₁62.5 mL
Water to add437.5 mL

Step-by-step solution

Moles stay the same

V1 = C2·V2/C1 = 0.25·500/2 = 62.5 mL
water = 500 − 62.5 = 437.5 mL

Key formulas

Dilution
c1V1 = c2V2
Molarity
c = n/V (mol/L)
Mixing
c = (c1V1 + c2V2)/(V1 + V2)

Practise Molarity & dilution

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