1. What Is Molar Concentration From Percentage?

Molar concentration (M) represents the number of moles of a solute per liter of solution. This calculator converts percentage weight/volume (% w/v) to molar concentration using molecular weight.

2. How Does The Calculator Work?

The calculator uses the formula:

Where:

• \( M \) — Molar concentration (mol/L)
• \( \% \text{ w/v} \) — Percentage weight/volume
• \( MW \) — Molecular weight (g/mol)

Explanation: The factor of 10 converts % w/v (g/100mL) to g/L, which is then divided by molecular weight to get mol/L.

3. Importance Of Molar Concentration Calculation

Details: Accurate molar concentration calculation is essential for preparing chemical solutions, conducting experiments, pharmaceutical formulations, and various laboratory applications where precise concentrations are required.

4. Using The Calculator

Tips: Enter percentage weight/volume value and molecular weight. Both values must be positive numbers. The result will be displayed in mol/L (molar concentration).

5. Frequently Asked Questions (FAQ)

Q1: What is percentage weight/volume (% w/v)?
A: % w/v represents grams of solute per 100 mL of solution. For example, a 5% w/v solution contains 5g of solute in 100mL of solution.

Q2: Why multiply by 10 in the formula?
A: Multiplying by 10 converts from g/100mL to g/L, since molar concentration is defined as moles per liter.

Q3: Can this calculator be used for any solute?
A: Yes, as long as you know the molecular weight of the solute and the concentration is expressed as % w/v.

Q4: What are typical molar concentration ranges?
A: Molar concentrations can range from millimolar (mM) to molar (M) concentrations depending on the application and solubility of the compound.

Q5: How accurate is this calculation?
A: The calculation is mathematically exact. The accuracy depends on the precision of your input values for percentage concentration and molecular weight.