Calculating Empircal Formula: Flashcards

1
Q

What is the empirical formula?

A

= simplest whole number ratio of the atoms of each element in a compound.

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2
Q

How do we work out the empirical formula?

A

= from the molecular formula
= dividing all the numbers by the smallest

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3
Q

How do we calculate the empirical formula?

A

= calculate the number of moles
= divide the moles by the smallest number
= gives us the ratio
=

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4
Q

How do we calculate the empirical formula when it is a percentage?

A

= find the moles
= divide by the smallest number of moles
=

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5
Q

How do we produce a whole number ratio?

A

= times all the ratio by 2

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5
Q

How do we calculate the molecular formula from the empirical formula?

A

= divide molecular formula mass of the compound by the relative molecular mass of the empirical formula
= tells us the multiplier
=

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