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Chapter 2: Problem 68

Give the chemical formula for each of the following ionic compounds: (a) sodium phosphate, (b) zinc nitrate, (c) barium bromate, (d) iron(II) perchlorate, (e) cobalt(II) hydrogen carbonate, (f) chromium(III) acetate, (g) potassium dichromate.

Short Answer

Expert verified
The chemical formulas for the given ionic compounds are: (a) \(Na_3PO_4\), (b) \(Zn(NO_3)_2\), (c) \(Ba(BrO_3)_2\), (d) \(Fe(ClO_4)_2\), (e) \(Co(HCO_3)_2\), (f) \(Cr(CH_3COO)_3\), and (g) \(K_2Cr_2O_7\).

Step by step solution

01

(a) Sodium phosphate

Sodium ions have a charge of +1 (\(Na^+\)), and phosphate ions have a charge of -3 (\(PO_4^{3-}\)). To balance the charges, we need three sodium ions to match one phosphate ion, which results in the chemical formula: \(Na_3PO_4\).
02

(b) Zinc nitrate

Zinc ions have a charge of +2 (\(Zn^{2+}\)), and nitrate ions have a charge of -1 (\(NO_3^{-}\)). Therefore, we need two nitrate ions to match one zinc ion, giving us the chemical formula: \(Zn(NO_3)_2\).
03

(c) Barium bromate

Barium ions have a charge of +2 (\(Ba^{2+}\)), and bromate ions have a charge of -1 (\(BrO_3^{-}\)). We need two bromate ions to balance one barium ion. This gives us the chemical formula: \(Ba(BrO_3)_2\).
04

(d) Iron(II) perchlorate

Iron(II) ions have a charge of +2 (\(Fe^{2+}\)), and perchlorate ions have a charge of -1 (\(ClO_4^{-}\)). To balance the charges, we need two perchlorate ions to match one iron(II) ion, resulting in the chemical formula: \(Fe(ClO_4)_2\).
05

(e) Cobalt(II) hydrogen carbonate

Cobalt(II) ions have a charge of +2 (\(Co^{2+}\)), and hydrogen carbonate ions have a charge of -1 (\(HCO_3^{-}\)). To balance the charges, we need two hydrogen carbonate ions to match one cobalt(II) ion, giving us the chemical formula: \(Co(HCO_3)_2\).
06

(f) Chromium(III) acetate

Chromium(III) ions have a charge of +3 (\(Cr^{3+}\)), and acetate ions have a charge of -1 (\(CH_3COO^{-}\)). To balance the charges, we need three acetate ions to match one chromium(III) ion, which results in the chemical formula: \(Cr(CH_3COO)_3\).
07

(g) Potassium dichromate

Potassium ions have a charge of +1 (\(K^+\)), and dichromate ions have a charge of -2 (\(Cr_2O_7^{2-}\)). We need two potassium ions to balance one dichromate ion. This gives the chemical formula: \(K_2Cr_2O_7\).

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Most popular questions from this chapter

How did Rutherford interpret the following observations made during his \(\alpha\) -particle scattering experiments? (a) Most \(\alpha\) particles were not appreciably deflected as they passed through the gold foil. (b) A few \(\alpha\) particles were deflected at very large angles. (c) What differences would you expect if beryllium foil were used instead of gold foil in the \(\alpha\) -particle scattering experiment?

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