Dilution Calculator Molecular Weight

Concentration Formula:

\[ C_2 = \frac{m}{MW \times V_2} \]

Concentration (C₂):

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1. What is the Dilution Formula?

The dilution formula calculates the molar concentration of a solution when you know the mass of solute, its molecular weight, and the final volume of the solution. This is essential for preparing solutions with precise concentrations in chemistry and biology.

2. How Does the Calculator Work?

The calculator uses the concentration formula:

\[ C_2 = \frac{m}{MW \times V_2} \]

Where:

\( C_2 \) — Final concentration (Molarity, M)
\( m \) — Mass of solute (grams)
\( MW \) — Molecular weight of solute (g/mol)
\( V_2 \) — Final volume of solution (Liters)

Explanation: The formula converts mass to moles using molecular weight, then divides by volume to get molar concentration.

3. Importance of Concentration Calculation

Details: Accurate concentration calculation is crucial for preparing solutions in laboratory work, pharmaceutical preparations, and chemical experiments where precise molarity is required.

4. Using the Calculator

Tips: Enter mass in grams, molecular weight in g/mol, and final volume in liters. All values must be positive numbers. For best results, use precise measurements.

5. Frequently Asked Questions (FAQ)

Q1: What units should I use for this calculator?
A: Mass should be in grams (g), molecular weight in grams per mole (g/mol), and volume in liters (L). The result will be in molarity (M).

Q2: Can I use this for diluting existing solutions?
A: This calculator is for preparing solutions from solid solutes. For diluting existing solutions, use \( C_1V_1 = C_2V_2 \) formula.

Q3: How precise should my measurements be?
A: For most laboratory work, measure mass to at least 3-4 significant figures and use analytical balance for best results.

Q4: What if my molecular weight has more decimal places?
A: You can enter molecular weight with as many decimal places as needed for your precision requirements.

Q5: Can I calculate mass or volume if I know concentration?
A: This calculator solves for concentration. Rearrange the formula to solve for mass (\( m = C_2 \times MW \times V_2 \)) or volume (\( V_2 = \frac{m}{MW \times C_2} \)) as needed.