Dilution & Molarity

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Any one of C1V1 = C2V2, molarity from mass and molar mass, and percent w/v — the arithmetic for making up solutions

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Enter the values

What to work out

Stock volume (V1)

Final concentration (C2)

Final volume (V2)

Result

C1 (answer)

C1V1 = C2V2 works in any units as long as each side uses the same ones.

Working

Formulas

Assumptions

The amount of solute is unchanged by dilution and volumes add (volume contraction on mixing ignored).
No chemical data is built in; the preset mass and molar mass are only examples.

Sources: Raymond Chang, Chemistry · Vogel's Textbook of Quantitative Chemical Analysis

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