5.1.23

Experiment for Empirical Formula

Test yourself

Experiment for Calculating Empirical Formula

We can devise experiments to calculate the mass of elements that make up a compound.

Illustrative background for StepsIllustrative background for Steps ?? "content

Steps

  • Measure the mass of the solid that is going to be reacted (e.g. magnesium ribbon).
  • React the solid with the oxygen in the air by heating.
  • Find out the mass of the product (magnesium oxide).
  • Calculate the mass of oxygen gained (final mass - initial mass).
  • Use the mass of magnesium and oxygen to calculate the empirical formula.
Illustrative background for ExampleIllustrative background for Example ?? "content

Example

  • Magnesium + oxygen → magnesium oxide.
  • 1.2g + mass of oxygen → 2.0g (data collected from practical).
  • 1.2g + 0.8g → 2.0g (mass of oxygen can be calculated).
Illustrative background for Empirical formulaIllustrative background for Empirical formula ?? "content

Empirical formula

  • Calculate empirical formula, as shown in the image.

Jump to other topics

1States of Matter

2Elements, Compounds & Mixtures

3Atomic Structure

4The Periodic Table

5Chemical Formulae, Equations & Calculations

6Bonding

7Electrolysis

8Groups of the Periodic Table

9The Atmosphere

10Reactivity Series

11Metal Extraction

12Acids & Alkalis

13Chemical Tests

14Physical Chemistry

15Organic Chemistry

Unlock your full potential with Seneca Premium

  • Unlimited access to 10,000+ open-ended exam questions

  • Mini-mock exams based on your study history

  • Unlock 800+ premium courses & e-books

Get started with Seneca Premium