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Classify each of these reactions as one of the four general reaction types described in this section. a. 2 Al(OH),(s) b. Na,O(s) + H,0() c. S(s) + 24 F(g) - Al,O,(s) + 3 H,0(g) 2 NaOH(aq) 8 SF (g)

Classify each of these reactions as one of the four general reaction types described in this section. a. 2 Al(OH),(s) b. Na,O(s) + H,0() c. S(s) + 24 F(g) - Al,O,(s) + 3 H,0(g) 2 NaOH(aq) 8 SF (g)

Chemistry for Engineering Students
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter4: Stoichiometry
Section: Chapter Questions
Problem 4.98PAE
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PROBLEM-SOLVING EXAMPLE 3-8 Classifying Reactions by Type Classify each of these reactions as one of the four general types discussed in this section, a. 2 Al(s) + 3 Br,(€) Al,Br,(s) b. 2 K(s) + H,O(e) 2 KOH(aq) + H,(g) c. AGNO,(aq) + NaCl(aq) d. NH,NO,(s) - N,0(g) + 2 H,O(g) AgC(s) + NANO,(aq) Strategy and Explanation Use the fact that in displacement reactions, one reactant is an element, and in exchange reactions, both reactants are compounds. a. With two reactants and a single product, this must be a combination reaction. b. The general equation for a displacement reaction, A + XZ AZ+ X, matches what occurs in the given reaction. Potassium (A) displaces hydrogen (X) from water (XZ) to form KOH (AZ) plus H, (X). c. The reactants exchange partners in this exchange reaction. Applying the general equation for an exchange reaction, AD + XZ AZ + XD, to this case, we find A is Ag*, D is N0, X is Nà", and Z is Cl. d. In this reaction, a single substance, NH,NO,, decomposes to form two products, N,0 and H,O. Answer a. Combination b. Displacement c. Exchange d. Decomposition PROBLEM-SOLVING PRACTICE 3-8 Classify each of these reactions as one of the four general reaction types described in this section. a. 2 Al(OH),(s) b. Na,0(s) + H,0(€) ----- 2 NaOH(aq) c. Sg(s) + 24 F,(g) d. 3 NaOH(aq) + H,PO,(aq) -- Na,PO,(aq) + 3 H2O(€) e. 3 C(s) + Fe,O,(8) Al,0,(s) + 3 H,0(g) - 8 SF,(g) --- 3 CO(g) + 2 Fe(€)
Transcribed Image Text:PROBLEM-SOLVING EXAMPLE 3-8 Classifying Reactions by Type Classify each of these reactions as one of the four general types discussed in this section, a. 2 Al(s) + 3 Br,(€) Al,Br,(s) b. 2 K(s) + H,O(e) 2 KOH(aq) + H,(g) c. AGNO,(aq) + NaCl(aq) d. NH,NO,(s) - N,0(g) + 2 H,O(g) AgC(s) + NANO,(aq) Strategy and Explanation Use the fact that in displacement reactions, one reactant is an element, and in exchange reactions, both reactants are compounds. a. With two reactants and a single product, this must be a combination reaction. b. The general equation for a displacement reaction, A + XZ AZ+ X, matches what occurs in the given reaction. Potassium (A) displaces hydrogen (X) from water (XZ) to form KOH (AZ) plus H, (X). c. The reactants exchange partners in this exchange reaction. Applying the general equation for an exchange reaction, AD + XZ AZ + XD, to this case, we find A is Ag*, D is N0, X is Nà", and Z is Cl. d. In this reaction, a single substance, NH,NO,, decomposes to form two products, N,0 and H,O. Answer a. Combination b. Displacement c. Exchange d. Decomposition PROBLEM-SOLVING PRACTICE 3-8 Classify each of these reactions as one of the four general reaction types described in this section. a. 2 Al(OH),(s) b. Na,0(s) + H,0(€) ----- 2 NaOH(aq) c. Sg(s) + 24 F,(g) d. 3 NaOH(aq) + H,PO,(aq) -- Na,PO,(aq) + 3 H2O(€) e. 3 C(s) + Fe,O,(8) Al,0,(s) + 3 H,0(g) - 8 SF,(g) --- 3 CO(g) + 2 Fe(€)
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