⚗ Aliquot

Acid / base dilution

From a concentrated reagent label this derives the stock molarity, then the aliquot and water for a safe target dilution.

Stock molarity from label

C_{1} = \frac{10 \cdot % _{w / w} \cdot ρ}{MW}

C_1	Stock molarity	mol/L
\%_{w/w}	Label percent weight per weight	%
\rho	Density	g/mL
\text{MW}	Molar mass of pure solute	g/mol

37% HCl → 1 M, 100 mL

Measure 8.281 mL of the 37% stock (≈ 12.08 M) and dilute to 100 mL total.

_canon.md §9

V_{1} = \frac{C _{2} \cdot V _{2}}{C _{1}}

_canon.md §9

V_{d} = V_{2} - V_{1}

_canon.md §9