Problem 77
Heptane, \(\mathrm{C}_{7} \mathrm{H}_{16}\), is one of the components of gasoline. Burning heptane in air yields carbon dioxide and water. Balance the equation for this reaction: \(\mathrm{C}_{7} \mathrm{H}_{16}(l)+\mathrm{O}_{2}(g) \rightarrow \mathrm{CO}_{2}(g)+\mathrm{H}_{2} \mathrm{O}(g)\)
Problem 78
The burning of ethanol, \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}\), in air yields carbon dioxide and water. Balance the equation for this reaction: \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}(l)+\mathrm{O}_{2}(g) \rightarrow \mathrm{CO}_{2}(g)+\mathrm{H}_{2} \mathrm{O}(g)\)
Problem 79
Sodium chloride reacts with bromine gas, \(\mathrm{Br}_{2}\), to produce sodium bromide plus chlorine gas. Write a balanced equation for this reaction.
Problem 86
Hydrogen gas is produced when elemental tin reacts with HF to produce hydrogen and tin(II) fluoride. Write the balanced equation for this reaction.
Problem 87
Classify each compound as acid, base, or salt: (a) \(\mathrm{KCl}\) (b) \(\mathrm{CH}_{3} \mathrm{COOH}\) (c) \(\mathrm{Al}(\mathrm{OH})_{3}\) (d) \(\mathrm{H}_{3} \mathrm{BO}_{3}\) (e) \(\mathrm{LiC}_{2} \mathrm{H}_{3} \mathrm{O}_{2}\)
Problem 91
Write the formula of the precipitate formed when these solutions are mixed: (a) Aluminum nitrate and sodium hydroxide (b) Potassium phosphate and calcium chloride (c) Magnesium sulfate and sodium carbonate
Problem 92
Write the balanced equation for the preparation of iron(III) oxide from iron metal and oxygen gas. What type of reaction is this?
Problem 99
Calcium hydroxide can be used as an antacid to neutralize \(\mathrm{HCl}\), the acid found in the stomach. Water and calcium chloride, \(\mathrm{CaCl}_{2}\), are the products of the reaction. Write the balanced equation for the reaction.
Problem 100
Carbon dioxide gas and calcium oxide are produced when calcium carbonate, \(\mathrm{CaCO}_{3}\), is heated strongly. Write the balanced equation for this process.
Problem 107
The reaction of carbon monoxide gas with water vapor produces carbon dioxide gas and hydrogen gas. Write the balanced equation for the reaction.