1. What is the Tocris Dilution Formula?

The Tocris dilution formula calculates the mass of compound needed to prepare a solution of specific molarity, volume, and molecular weight. It is widely used in laboratory settings for accurate solution preparation.

2. How Does the Calculator Work?

The calculator uses the Tocris formula:

Where:

• \( m \) — Mass in grams (g)
• \( M \) — Molarity in moles per liter (mol/L)
• \( V \) — Volume in liters (L)
• \( MW \) — Molecular weight in grams per mole (g/mol)

Explanation: The formula calculates the required mass by multiplying the desired molar concentration by the solution volume and the compound's molecular weight.

3. Importance of Accurate Mass Calculation

Details: Precise mass calculation is essential for preparing accurate concentrations in research experiments, drug development, and various laboratory applications where solution consistency is critical.

4. Using the Calculator

Tips: Enter molarity in mol/L, volume in liters, and molecular weight in g/mol. All values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: Why is molecular weight important in this calculation?
A: Molecular weight determines how much mass is needed to achieve a specific number of moles in the solution, making it fundamental to molar concentration calculations.

Q2: Can I use different volume units?
A: The calculator uses liters. Convert milliliters to liters (divide by 1000) or other volume units to liters before input.

Q3: What if my compound is a hydrate?
A: For hydrated compounds, use the molecular weight that includes the water molecules in the calculation.

Q4: How accurate should my measurements be?
A: Use analytical balances for mass measurement and precise volumetric equipment for the most accurate results in critical applications.

Q5: Can this calculator handle very small concentrations?
A: Yes, the calculator can handle micro and nanomolar concentrations, but ensure you use appropriate precision in your measurements.