Skip to main content
Ch.2 - Atoms, Molecules, and Ions
Brown - Chemistry: The Central Science 14th Edition
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoBrown 14th EditionCh.2 - Atoms, Molecules, and IonsProblema 49b
Capitolo 2, Problema 49b

Write the empirical formula corresponding to each of the following molecular formulas: (b) C8H10

Guida verificata passo dopo passo
1
Identify the greatest common divisor (GCD) of the subscripts in the molecular formula C_8H_{10}.
Divide each subscript in the molecular formula by the GCD to simplify the ratio of atoms.
For C_8H_{10}, the GCD of 8 and 10 is 2.
Divide the subscript of carbon (8) by 2 to get 4, and the subscript of hydrogen (10) by 2 to get 5.
The empirical formula is the simplest whole number ratio of atoms, which is C_4H_5.

Risposta video verificata per un problema simile:

Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
1m

Concetti chiave

Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.

Empirical Formula

The empirical formula of a compound represents the simplest whole-number ratio of the elements present in that compound. It does not provide information about the actual number of atoms in a molecule but rather the relative proportions of each element. For example, the empirical formula for glucose (C6H12O6) is CH2O, indicating a 1:2:1 ratio of carbon, hydrogen, and oxygen.
Video consigliato:
Percorso guidato
02:26
Empirical vs Molecular Formula

Molecular Formula

The molecular formula of a compound indicates the actual number of atoms of each element in a molecule. It provides more specific information than the empirical formula and can be derived from it by multiplying the subscripts in the empirical formula by a whole number. For instance, the molecular formula C8H10 indicates that there are 8 carbon atoms and 10 hydrogen atoms in the molecule.
Video consigliato:
Percorso guidato
02:08
Determining Molecular Formulas

Dividing by the Greatest Common Factor

To derive the empirical formula from a molecular formula, one must divide the subscripts of the molecular formula by their greatest common factor (GCF). This process simplifies the ratio of the elements to its lowest terms. For the molecular formula C8H10, the GCF of 8 and 10 is 2, leading to the empirical formula C4H5.
Video consigliato:
Percorso guidato
02:38
Common Conversion Factors
Pratica correlata
Domanda del libro di testo

What are the molecular and empirical formulas for each of the following compounds? Write the molecular formula for the following compound.

532
views
Domanda del libro di testo

Write the empirical formula corresponding to each of the following molecular formulas: (c) C4H8O2

722
views
Domanda del libro di testo

Two substances have the same molecular and empirical formulas. Does this mean that they must be the same compound?

922
views
Domanda del libro di testo

Write the empirical formula corresponding to each of the following molecular formulas: (a) Al2Br6

776
views
Domanda del libro di testo

Determine the molecular and empirical formulas of the following: (a) the organic solvent benzene, which has six carbon atoms and six hydrogen atoms

877
views
Domanda del libro di testo

Write the empirical formula corresponding to each of the following molecular formulas: (d) P4O10 (e) C6H4Cl2 (f) B3N3H6.

660
views