Skip to main content
Ch.2 - Atoms, Molecules & Ions
McMurry - Chemistry 8th Edition
McMurry8th EditionChemistryISBN: 9781292336145Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoMcMurry 8th EditionCh.2 - Atoms, Molecules & IonsProblema 14
Capitolo 2, Problema 14

What is the correct formula for sodium phosphate? (LO 2.24) (a) Na3PO4 (b) Na3P (c) NaPO4 (d) Na(PO4)2

Guida verificata passo dopo passo
1
Identify the ions involved in forming sodium phosphate. Sodium (Na) is a cation with a +1 charge, and phosphate (PO4) is an anion with a -3 charge.
Determine the correct ratio of sodium ions to phosphate ions to balance the charges. Since sodium has a +1 charge and phosphate has a -3 charge, you need three sodium ions to balance one phosphate ion.
Write the chemical formula by placing the cation first followed by the anion. Include the necessary subscripts to indicate the number of each ion in the formula.
Check the chemical formula to ensure that the total charge is zero, indicating that the charges are balanced.
Compare the formula you derived with the options given in the problem to find the correct answer.

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.

Ionic Compounds

Ionic compounds are formed when metals transfer electrons to nonmetals, resulting in the formation of positively charged cations and negatively charged anions. In the case of sodium phosphate, sodium (Na) is a metal that forms a cation (Na+), while phosphate (PO4) is a polyatomic anion. Understanding the nature of these ions is crucial for determining the correct formula of the compound.
Video consigliato:
Percorso guidato
02:11
Ionic Compounds Naming

Polyatomic Ions

Polyatomic ions are ions composed of two or more atoms covalently bonded together, which carry a net charge. The phosphate ion (PO4) carries a -3 charge, which is essential for balancing the charges when combined with sodium ions. Recognizing the charge of polyatomic ions helps in writing the correct chemical formulas for compounds.
Video consigliato:
Percorso guidato
01:20
Polyatomic Ion Variations

Chemical Formula Writing

Writing chemical formulas involves combining the symbols of the elements or ions in a compound while ensuring that the overall charge is neutral. For sodium phosphate, three sodium ions (Na+) are needed to balance the -3 charge of one phosphate ion (PO4). This results in the formula Na3PO4, which reflects the correct stoichiometry of the compound.
Video consigliato:
Percorso guidato
00:46
Writing Formulas
Pratica correlata
Domanda del libro di testo
How many protons, neutrons, and electrons are in 107Ag+? (LO 2.21) (a) protons = 47, neutrons = 60, electrons = 46 (b) protons = 47, neutrons = 107, electrons = 48 (c) protons = 60, neutrons = 47, electrons = 47 (d) protons = 47, neutrons = 107, electrons = 46
1027
views
1
rank
Domanda del libro di testo

Is the red element on the following periodic table likely to be a gas, a liquid, or a solid?

410
views
Domanda del libro di testo

What is the atomic number of the blue element?

368
views
Domanda del libro di testo

The molecular illustration represents (LO 2.18) (a) a pure element (b) a mixture of two elements (c) a pure compound (d) a mixture of an element and a compound

545
views
Domanda del libro di testo
Where on the following outline of a periodic table are the indicated elements or groups of elements?

(a) Alkali metals (b) Halogens (c) Alkaline earth metals (d) Transition metals (e) Hydrogen (f) Helium
844
views
Domanda del libro di testo

Which of the following compounds would you expect to have covalent bonds? (LO 2.20) (a) Na2O (b) PBr3 (c) CaBr2 (d) MgS

588
views