empirical formula Flashcards

1
Q

how can the relative proportion in an element be expressed

A

a percentage, in terms of mass contributed by each element or a formula showing the ratio of atoms attributed by each element

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2
Q

what is an empirical formula

A

gives the simpilest who number ratio of each type of element in a compound

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3
Q

is an ionic compound as empirical formula

A

yes as it provides the simplest whole number ratio of ions in the ionic lattice

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4
Q

how to obtain empirical formula through known mass

A
  1. obtain the mass of each element in the compound 2. calculate the amount of moles of each element using mass/molar mass 3. convert the mole of each element calculated into a whole number ratio 4. write the empirical formula
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5
Q

what is molecular formula

A

the actual number of atoms of each element rather than a simplification whole number ratio

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6
Q

how to find molecular formula

A
  1. determine the empirical number 2. determine the molar mass of the compound and divide this by the molar mass of one empirical formula unit 4. times this number by the empirical formula
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7
Q
A
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