Chapter 6: Problem 67
When a strip of magnesium metal is heated in oxygen, it bursts into an intensely white flame and produces a finely powdered dust of magnesium oxide. Write the unbalanced chemical equation for this process.
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Chapter 6: Problem 67
When a strip of magnesium metal is heated in oxygen, it bursts into an intensely white flame and produces a finely powdered dust of magnesium oxide. Write the unbalanced chemical equation for this process.
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Phosphorus trichloride is used in the manufacture of certain pesticides, and may be synthesized by direct combination of its constituent elements. Write the unbalanced chemical equation for this process.
Glass is a mixture of several compounds, but a major constituent of most glass is calcium silicate, Ca\(\mathrm{SiO}_{3} .\) Glass can be etched by treatment with hydrogen fluoride: HF attacks the calcium silicate of the glass, producing gaseous and water-soluble products (which can be removed by washing the glass). For example, the volumetric glassware in chemistry laboratories is often graduated by using this process. Balance the following equation for the reaction of hydrogen fluoride with calcium silicate.$$\mathrm{CaSiO}_{3}(s)+\mathrm{HF}(g) \rightarrow \mathrm{CaF}_{2}(a q)+\mathrm{SiF}_{4}(g)+\mathrm{H}_{2} \mathrm{O}(l).$$
When sodium sulfite is boiled with sulfur, the sulfite ions, \(S O_{3}^{2-}\), are converted to thiosulfate ions, \(S_{2} O_{3}^{2-}\) resulting in a solution of sodium thiosulfate, \(\mathrm{Na}_{2} \mathrm{S}_{2} \mathrm{O}_{3} .\) Write the unbalanced chemical equation for this reaction.
Many over-the-counter antacid tablets are now formulated using calcium carbonate as the active ingredient, which enables such tablets to also be used as dietary calcium supplements. As an antacid for gastric hyperacidity, calcium carbonate reacts by combining with hydrochloric acid found in the stomach,producing a solution of calcium chloride, converting the stomach acid to water, and releasing carbon dioxide gas (which the person suffering from stomach problems may feel as a "burp"). Write the unbalanced chemical equation for this process.
When solid red phosphorus, \(P_{4}\), is burned in air, the phosphorus combines with oxygen, producing a choking cloud of tetraphosphorus decoxide. Write the unbalanced chemical equation for this reaction.
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