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Chapter 22: Problem 65

Give the chemical formula for (a) hydrocyanic acid, (b) nickel tetracarbonyl, (c) barium bicarbonate, (d) calcium acetylide (e) potassium carbonate.

Short Answer

Expert verified
(a) HCN (b) Ni(CO)_4 (c) Ba(HCO_3)_2 (d) CaC_2 (e) K_2CO_3

Step by step solution

01

Identify the ions

Hydrocyanic acid consists of hydrogen (H) and cyanide (CN) ions. The hydrogen ion has a charge of +1 and the cyanide ion has a charge of -1.
02

Write the chemical formula

Since the charges of hydrogen and cyanide ions are of equal magnitude but opposite signs, we can combine one hydrogen ion with one cyanide ion to form a neutral compound. Thus, the chemical formula for hydrocyanic acid is HCN. #b. Nickel tetracarbonyl#
03

Identify the ions

Nickel tetracarbonyl consists of nickel (Ni) and carbonyl (CO) ions. The nickel ion has a charge of +2 and the carbonyl ion has a charge of -1.
04

Write the chemical formula

To cancel the charges, we need two carbonyl ions for each nickel ion. Thus, the chemical formula for nickel tetracarbonyl is Ni(CO)_4. #c. Barium bicarbonate#
05

Identify the ions

Barium bicarbonate consists of barium (Ba) and bicarbonate (HCO_3) ions. The barium ion has a charge of +2 and the bicarbonate ion has a charge of -1.
06

Write the chemical formula

To cancel the charges, we need two bicarbonate ions for each barium ion. Thus, the chemical formula for barium bicarbonate is Ba(HCO_3)_2. #d. Calcium acetylide#
07

Identify the ions

Calcium acetylide consists of calcium (Ca) and acetylide (C_2H) ions. The calcium ion has a charge of +2 and the acetylide ion has a charge of -2.
08

Write the chemical formula

Since the charges of calcium and acetylide ions are of equal magnitude but opposite signs, we can combine one calcium ion with one acetylide ion to form a neutral compound. Thus, the chemical formula for calcium acetylide is CaC_2. #e. Potassium carbonate#
09

Identify the ions

Potassium carbonate consists of potassium (K) and carbonate (CO_3) ions. The potassium ion has a charge of +1 and the carbonate ion has a charge of -2.
10

Write the chemical formula

To cancel the charges, we need two potassium ions for each carbonate ion. Thus, the chemical formula for potassium carbonate is K_2CO_3.

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Most popular questions from this chapter

Write the chemical formula for each of the following compounds, and indicate the oxidation state of nitrogen in each: (a) sodium nitrite, (b) ammonia, (c) nitrous oxide, (d) sodium cyanide, (e) nitric acid, (f) nitrogen dioxide, (g) nitrogen, (h) boron nitride.

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Give a reason why hydrogen might be placed along with the group lA elements of the periodic table.

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Write a chemical formula for each compound or ion, and indicate the oxidation state of the group \(5 \mathrm{~A}\) element in each formula: (a) phosphate ion, (b) arsenous acid, (c) antimony(III) sulfide, (d) calcium dihydrogen phosphate, (e) potassium phosphide, (f) gallium arsenide.
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