Multiple Choice
A compound consists of molecules containing 2 nitrogen atoms and 4 oxygen atoms. What are the molecular and empirical formulas of this compound?
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3. Chemical Reactions
Empirical Formula
Multiple Choice
Which pair of compounds has the same empirical formula?
A
C2H2 and C6H6
B
C2H6 and C3H8
C
CH4 and C2H2
D
C2H4 and C3H6
Verified step by step guidance1
Understand that the empirical formula represents the simplest whole-number ratio of atoms of each element in a compound.
For each compound, determine the ratio of carbon (C) atoms to hydrogen (H) atoms by dividing the subscripts by their greatest common divisor (GCD).
Calculate the empirical formula for C2H2: divide both 2 (C) and 2 (H) by 2, resulting in CH.
Calculate the empirical formula for C6H6: divide both 6 (C) and 6 (H) by 6, resulting in CH.
Compare the empirical formulas of the pairs to identify which have the same empirical formula, focusing on the pair C2H4 and C3H6 by simplifying their subscripts similarly.
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