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Chapter 22: Problem 66

Give the chemical formula for (a) carbonic acid, (b) sodium cyanide, (c) potassium hydrogen carbonate, (d) acetylene, (e) iron pentacarbonyl.

Short Answer

Expert verified
The chemical formulas for the given compounds are: (a) Carbonic Acid: \(H_2CO_3\), (b) Sodium Cyanide: \(NaCN\), (c) Potassium Hydrogen Carbonate: \(KHCO_3\), (d) Acetylene: \(C_2H_2\), and (e) Iron Pentacarbonyl: \(Fe(CO)_5\).

Step by step solution

01

(a) Carbonic Acid

Carbonic acid is an oxyacid of carbon, with chemical formula H_2CO_3. It's derived from the carbonate ion (CO_3^(2-)). To obtain a neutral compound, we require two hydrogen ions (H^+) to balance the positive and negative charges.
02

(b) Sodium Cyanide

Sodium cyanide is an ionic compound containing the sodium cation (Na^+) and the cyanide anion (CN^−). To achieve electrical neutrality, we need one sodium ion and one cyanide ion. So, the chemical formula for sodium cyanide is NaCN.
03

(c) Potassium Hydrogen Carbonate

Potassium hydrogen carbonate, also known as potassium bicarbonate, is an ionic compound containing the potassium ion (K^+), and the hydrogen carbonate ion (HCO_3^−). To achieve electrical neutrality, we need one potassium ion and one hydrogen carbonate ion. The chemical formula for potassium hydrogen carbonate is KHCO_3.
04

(d) Acetylene

Acetylene is an organic compound with the molecular formula C_2H_2. It's the simplest alkyne, containing a carbon-carbon triple bond. Remember that each carbon atom forms four bonds, so the structure of acetylene is H-C≡C-H.
05

(e) Iron Pentacarbonyl

Iron pentacarbonyl is a coordination compound containing an iron atom (Fe) bonded to five carbonyl (CO) ligands. The chemical formula for iron pentacarbonyl is Fe(CO)_5.

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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) nitric oxide, (b) hydrazine, (c) potassium cyanide, (d) sodium nitrite, (e) ammonium chloride, (f) lithium nitride.

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The atomic and ionic radii of the first three group \(6 \mathrm{~A}\) elements are (a) Explain why the atomic radius increases in moving downward in the group. (b) Explain why the ionic radii are larger than the atomic radii. (c) Which of the three anions would you expect to be the strongest base in water? Explain. [Sections 22.5 and 22.6\(]\)

Both dimethylhydrazine, \(\left(\mathrm{CH}_{3}\right)_{2} \mathrm{NNH}_{2}\), and methylhydrazine, \(\mathrm{CH}_{3} \mathrm{NHNH}_{2}\), have been used as rocket fuels. When dinitrogen tetroxide \(\left(\mathrm{N}_{2} \mathrm{O}_{4}\right)\) is used as the oxidizer, the products are \(\mathrm{H}_{2} \mathrm{O}\) \(\mathrm{CO}_{2}\), and \(\mathrm{N}_{2}\). If the thrust of the rocket depends on the volume of the products produced, which of the substituted hydrazines produces a greater thrust per gram total mass of oxidizer plus fuel? [Assume that both fuels generate the same temperature and that \(\mathrm{H}_{2} \mathrm{O}(g)\) is formed. \(]\)

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