1. What is Equivalent Mass of Metal?

Definition: Equivalent Mass of Metal is the no. of parts by mass of element which can displace/combine with 1.008 parts by mass of hydrogen or 8 parts by mass of oxygen or 35.5 parts by mass of chlorine.

Purpose: This calculator helps determine the equivalent mass of a metal using the hydrogen displacement method, important in chemistry and metallurgy.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( E.M_{Metal} \) — Equivalent Mass of Metal (kg)
• \( W \) — Mass of Metal (kg)
• \( M_{displaced} \) — Mass of Hydrogen Displaced (kg)
• \( E.M_{Hydrogen} \) — Equivalent Mass of Hydrogen (1.008g or 0.001008kg)

Explanation: The mass of metal is divided by the mass of hydrogen displaced, then multiplied by the equivalent mass of hydrogen.

3. Importance of Equivalent Mass Calculation

Details: Calculating equivalent mass is crucial for understanding chemical reactions, stoichiometry, and determining atomic weights of metals.

4. Using the Calculator

Tips: Enter the mass of metal, mass of hydrogen displaced, and equivalent mass of hydrogen (default 0.001008 kg). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the standard equivalent mass of hydrogen?
A: The standard equivalent mass of hydrogen is 1.008 grams (0.001008 kg).

Q2: How is hydrogen displacement measured?
A: Hydrogen displacement is typically measured by the volume of hydrogen gas displaced at STP and converted to mass.

Q3: What metals can be analyzed with this method?
A: This method works for metals that react with acids to produce hydrogen gas (e.g., zinc, magnesium, aluminum).

Q4: Why is equivalent mass important?
A: Equivalent mass helps determine combining ratios of elements and is fundamental in stoichiometric calculations.

Q5: How accurate is this method?
A: Accuracy depends on precise measurement of hydrogen volume and proper STP conditions. Typically accurate to ±5%.