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Work out a solution's concentration as % w/v, % w/w, % v/v, ppm, ppb, g/L, and molarity from the amounts of solute and solution.
Also covers: Percent concentration calculator ยท ppm calculator ยท % w/v calculator ยท Mass percent calculator
% w/v (g per 100 mL)
2%
5 g of solute in 250 mL of solution.
g/L
20
mg/L
20,000
โ ppm for dilute water solutions
Molarity
0.342233 M
NaCl, 58.4398 g/mol
The amount of solution is the total after mixing (solute + solvent), not the solvent alone.
Measured by mass for a solid (g, mg, kg) or by volume for a liquid (mL, L).
The total volume or mass of the finished solution, solute included.
The matching percentage (w/v, w/w, or v/v) plus ppm, ppb, g/L, and molarity when you give the solute's formula.
% w/v is grams of solute per 100 mL of solution; % w/w is grams per 100 g of solution; % v/v is millilitres per 100 mL of solution. Saline at 0.9% w/v is 0.9 g of salt in every 100 mL.
For dilute solutions in water, practically yes, because 1 L of water weighs about 1 kg. For other solvents or concentrated solutions, ppm by mass (mg/kg) differs.
Concentrations are defined per amount of solution. Dissolving 5 g of salt in 250 mL of water gives slightly more than 250 mL of solution.
No. Every calculation runs in your browser.
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