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Chapter 3: Problem 19

Write a balanced chemical equation for the reaction that occurs when (a) \(\mathrm{Mg}(s)\) reacts with \(\mathrm{Cl}_{2}(g) ;\) (b) barium carbonate decomposes into barium oxide and carbon dioxide gas when heated; (c) the hydrocarbon styrene, \(\mathrm{C}_{8} \mathrm{H}_{8}(l),\) is combusted in air; (d) dimethylether, \(\mathrm{CH}_{3} \mathrm{OCH}_{3}(g),\) is combusted in air.

Short Answer

Expert verified
a) \(Mg(s) + Cl_{2}(g) \rightarrow MgCl_{2}(s)\) b) \(BaCO_{3}(s) \rightarrow BaO(s) + CO_{2}(g)\) c) \(C_{8}H_{8}(l) + 6O_{2}(g) \rightarrow 8CO_{2}(g) + 4H_{2}O(l)\) d) \(CH_{3}OCH_{3}(g) + 3O_{2}(g) \rightarrow 2CO_{2}(g) + 3H_{2}O(l)\)

Step by step solution

01

Reaction a: Magnesium reacting with chlorine gas

When magnesium reacts with chlorine gas, it forms magnesium chloride. The balanced chemical equation for this reaction is: \[Mg(s) + Cl_{2}(g) \rightarrow MgCl_{2}(s)\]
02

Reaction b: Decomposition of barium carbonate

When barium carbonate decomposes, it forms barium oxide and carbon dioxide gas. The balanced chemical equation for this reaction is: \[BaCO_{3}(s) \rightarrow BaO(s) + CO_{2}(g)\]
03

Reaction c: Combustion of styrene

Combustion of the hydrocarbon styrene (\(C_{8}H_{8}(l)\)) in air produces carbon dioxide and water. The balanced chemical equation for this reaction is: \[C_{8}H_{8}(l) + 6O_{2}(g) \rightarrow 8CO_{2}(g) + 4H_{2}O(l)\]
04

Reaction d: Combustion of dimethyl ether

Combustion of dimethyl ether (\(CH_{3}OCH_{3}(g)\)) in air produces carbon dioxide and water. The balanced chemical equation for this reaction is: \[CH_{3}OCH_{3}(g) + 3O_{2}(g) \rightarrow 2CO_{2}(g) + 3H_{2}O(l)\]

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Most popular questions from this chapter

A sample of the male sex hormone testosterone, \(\mathrm{C}_{19} \mathrm{H}_{28} \mathrm{O}_{2}\) , contains \(3.88 \times 10^{21}\) hydrogen atoms. (a) How many atoms of carbon does it contain? (b) How many molecules of testosterone does it contain? (c) How many moles of testosterone does it contain? (d) What is the mass of this sample in grams?

Solutions of sulfuric acid and lead(II) acetate react to form solid lead(II) sulfate and a solution of acetic acid. If 5.00 g of sulfuric acid and 5.00 g of lead(II) acetate are mixed, calculate the number of grams of sulfuric acid, lead(II) acetate, lead(II) sulfate, and acetic acid present in the mixture after the reaction is complete.

Calcium hydride reacts with water to form calcium hydroxide and hydrogen gas. (a) Write a balanced chemical equation for the reaction. (b) How many grams of calcium hydride are needed to form 4.500 g of hydrogen?

A key step in balancing chemical equations is correctly identifying the formulas of the reactants and products. For example, consider the reaction between calcium oxide, CaO(s), and \(\mathrm{H}_{2} \mathrm{O}(l)\) to form aqueous calcium hydroxide. (a) Write a balanced chemical equation for this combination reaction, having correctly identified the product as \(\mathrm{Ca}(\mathrm{OH})_{2}(a q)\) . (b) Is it possible to balance the equation if you incorrectly identify the product as \(\mathrm{CaOH}(a q),\) and if so, what is the equation?

(a) What is the mass, in grams, of one mole of \(^{12} \mathrm{C} ?\) (b) How many carbon atoms are present in one mole of \(^{12} \mathrm{C} ?\)
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