1. What is Equivalent Mass of Base?

Definition: Equivalent mass of bases is defined as the mass which reacts with one mole of hydrogen cations (H⁺).

Purpose: This calculator helps determine the equivalent mass of a base through neutralization reaction with a known acid.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( E.M_{base} \) — Equivalent mass of base (kg)
• \( W_b \) — Weight of base used (kg)
• \( V_{acid} \) — Volume of acid required for neutralization (m³)
• \( N_a \) — Normality of acid used (mol/m³)

Explanation: The weight of base is divided by the product of acid volume and normality to determine the equivalent mass that reacts with one equivalent of acid.

3. Importance of Equivalent Mass Calculation

Details: Determining equivalent mass is crucial for stoichiometric calculations in acid-base reactions, titration analysis, and understanding chemical reactivity.

4. Using the Calculator

Tips: Enter the weight of base in kg, volume of acid in cubic meters, and normality of acid in mol/m³. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What units should I use for the inputs?
A: Weight should be in kilograms (kg), volume in cubic meters (m³), and normality in moles per cubic meter (mol/m³).

Q2: How do I convert from grams to kilograms?
A: Divide gram values by 1000 to convert to kilograms (1 kg = 1000 g).

Q3: What if I have volume in liters?
A: Convert liters to cubic meters by dividing by 1000 (1 m³ = 1000 L).

Q4: How is normality different from molarity?
A: Normality accounts for reactive capacity (equivalents per liter), while molarity is simply moles per liter. For monoprotic acids, they are equal.

Q5: Can I use this for polyprotic bases?
A: Yes, but the equivalent mass will represent the mass that reacts with one equivalent of acid, not necessarily one mole.