When would I use this?

When you know how many moles of reagent you need and want to know what volume of stock solution to measure.

Can I use other concentration units?

This works with molarity (mol/L). Convert other units to molarity first.

What if I need a mass instead of moles?

Convert mass to moles first by dividing by molar mass, then use this calculator.

Free Volume from Molarity Calculator

Calculate the volume of solution needed to obtain a specific number of moles given the molarity.

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Moles Needed

mol

Molarity of Solution

Volume Needed

0.2000 L

Volume Needed200.00 mL

Volume Needed vs Moles Needed

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How to Calculate Volume from Molarity

Formula

V = n / M

Rearrangement of M = n/V. V is in liters when M is mol/L and n is mol.

Example Calculation

How much 0.5 M NaOH to get 0.1 mol?

01V = n / M
02V = 0.1 / 0.5
03V = 0.2 L = 200 mL

Frequently Asked Questions

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Understanding Molarity

Learn what molarity is, how to calculate it, and why it matters in chemistry. Covers moles, liters, dilution, and step-by-step examples for preparing solutions.

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