3.1.2.4 Empirical Formula And Molecular Formula Flashcards Preview

AQA A Level Chemistry > 3.1.2.4 Empirical Formula And Molecular Formula > Flashcards

Flashcards in 3.1.2.4 Empirical Formula And Molecular Formula Deck (4)
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1
Q

What is the empirical formula?

A

The simplest whole number ratio of atoms of each element in a compound

2
Q

What is the molecular formula?

A

The actual number of each atoms in a compound

3
Q

How do you work out empirical formula?

A

Percent to mass, mass by mole, divide by small, multiply til whole

4
Q

What is combustion analysis?

A

Burn the compound in excess oxygen
Measure the amounts of water, carbon dioxide and sulfur dioxide
By knowing the products, you can work out the reactants

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