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Concept explainers
(a)
Interpretation:
Give two examples of single displacement and double displacement. How the two reactions are types of similar and how are they different.
Concept Introduction:
Displacement or Replacement reaction:
There are two types of Displacement or Replacement reactions which are follows:
- Single Replacement or displacement reaction.
- Double Replacement or displacement reaction.
Single Replacement reaction:
In Single Replacement or displacement one element or group of reactant is replaced by another element or group. For example the reaction between
In the above reaction hydrogen is replaced by zinc metal.
Double Replacement or displacement reaction:
In Double Replacement or displacement reaction all element or group of reactants is replaced by another element or group. For example the reaction between
In the reaction between
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Answer to Problem 51QAP
Examples of Double Replacement or displacement reactions:
Examples of single Replacement or displacement reactions:
In the above two reactions single displacement and double displacement reactions; displacement or replacement occurred by another group or element.
The double Replacement or displacement reaction is an example of precipitate reaction while single displacement not.
Explanation of Solution
Single Replacement reaction:
In Single Replacement or displacement one element or group of reactant is replaced by another element or group. For example the reaction between
In the above reaction hydrogen is replaced by zinc metal.
Double Replacement or displacement reaction:
In Double Replacement or displacement reaction all element or group of reactants is replaced by another element or group. For example the reaction between
In the reaction between
Examples of Double Replacement or displacement reactions:
Examples of single Replacement or displacement reactions:
In the above two reactions single displacement and double displacement reactions; displacement or replacement occurred by another group or element.
The double Replacement or displacement reaction is an example of precipitate reaction while single displacement not.
(b)
Interpretation:
Give two examples of reactions in which water and gases are the driving forces.
Concept Introduction:
The most common driving forces which create product in
- Formation of a solid.
- Formation of water.
- Transfer of electrons.
- Formation of gas.
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Answer to Problem 51QAP
The formation of gas is an evidence of a chemical reaction because gas present as molecule from not in ion forms.
Examples
The formation of water is an evidence of a chemical reaction because water is present as molecule from not in ion forms.
Examples
Explanation of Solution
The formation of gas is an evidence of a chemical reaction because gas present as molecule from not in ion forms.
Examples:
The formation of water is an evidence of a chemical reaction because water is present as molecule from not in ion forms.
Examples
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Chapter 7 Solutions
Introductory Chemistry: A Foundation
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- Polychlorinated biphenyls (PCBs) have been used extensively as dielectric materials in electrical transformers. Because PCBs have been shown to be potentially harmful, analysis for their presence in the environment has become very important. PCBs are manufactured according to the following generic reaction: C12H10+nCl2C12H10nCln.+nHCl This reaction results in a mixture of PCB products. The mixture is analyzed by decomposing the PCBs and then precipitating the resulting Cl asAgCl. a. Develop a general equation that relates the average value of n to the mass of a given mixture of PCBs and the mass of AgCl produced. b. A 0.1947-g sample of a commercial PCB yielded 0.4791 g of AgCl. What is the average value of n for this sample?arrow_forwardWhen balancing a chemical equation, which of the following statements is false? l type='a'> Subscripts in the reactants must be conserved in the products. i>Coefficients are used to balance the atoms on both sides. i>The law of conservation of matter must he followed. i>Phases are often shown for each compound hut are not critical to balancing an equation.arrow_forwardMany 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.arrow_forward
- A weighed sample of a metal is added to liquid bromine and allowed to react completely. The product substance is then separated from any leftover reactants and weighed. This experiment is repeated with several masses of the metal but with the same volume of bromine. This graph indicates the results. Explain why the graph has the shape that it does.arrow_forwardAqueous hydrogen fluoride (hydrofluoric acid) is used to etch glass and to analyze minerals for their silicon content. Hydrogen fluoride will also react with sand (silicon dioxide). (a) Write an equation for the reaction of solid silicon dioxide with hydrofluoric acid to yield gaseous silicon tetrafluoride and liquid water. (b) The mineral fluorite (calcium fluoride) occurs extensively in Illinois. Solid calcium fluoride can also be prepared by the reaction of aqueous solutions of calcium chloride and sodium fluoride, yielding aqueous sodium chloride as the other product. Write complete and net ionic equations for this reaction.arrow_forwardWhen steel wool (iron) is heated in pure oxygen gas, the steel wool bursts into flame and a fine powder consisting of a mixture of iron oxides ( FeO and Fe2O3 ) forms. Write separate unbalanced equations for the reaction of iron with oxygen to give each of these products.arrow_forward
- list at least three quantities that must be conserved in chemical reactions.arrow_forwardComplete and balance the equations for the following acid-base neutralization reactions. If water is used as a solvent, write the reactants and products as aqueous ions. In some cases, there may be more than one correct answer, depending on the amounts of reactants used. (a) Mg(OH)2(s)+HCl4(aq) (b) SO3(g)+H2O(l) (assume an excess of water and that the product dissolves) (c) SrO(s)+H2SO4(l)arrow_forwardWhat is the difference between a solute and a solvent?arrow_forward
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