17. We know two different compounds may have the same empirical formula. Can you identify the pair with the same emperical formula? * 1 point C2H4 and C4H6 NO2 and N2O5 NO2 and N2O4 C2H4 and C3H8
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17. We know two different compounds may have the same empirical formula. Can you identify the pair with the same emperical formula? * 1 point C2H4 and C4H6 NO2 and N2O5 NO2 and N2O4 C2H4 and C3H8
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Answer: NO2 and N2O4
both have empirical formula as NO2
Explanation:
As per the formula,
Molecular formula = n(empirical formula)
In order to find the empirical formula of the compound we need to remove the common no from the compound
(1)
In C 2 H 4 we can take 2 as the common no
C 2 H 4 = 2( C H 2)
The empirical formula of C 2 H 4 is C H 2
C 4 H 6
In C 4 H 6 we can take 2 as the common no
C 2 H 4 = 2( C2 H 3)
The empirical formula of C 4H 6 is C 2H 3
(2)
In N 20 nothing can be taken as common so empirical formula = molecular formula
In N 2 O 5 also nothing can be taken as common so empirical formula = molecular formula
(3)
In N 20 nothing can be taken as common so empirical formula = molecular formula
In N 2 O 4 we can take 2 as the common no
N 2 O 4= 2( N 2O )
The empirical formula is N 2 O
N 20 and N 2 O 4 have similar empirical formulas