Question

12 b and C

Identifying the Type of Redox Reaction

Classify each of the following redox reactions as a combination, decomposition, or displacement reaction, give a balanced molecular equation for each, as well as totaland net ionic equations for parts (b) and (c), and identify the oxidizing and reducing agents. (Type your answer using the format H2O for H2O and (NH4)2CO3 for(NH4)2CO3. Do not include state symbols in the answers. Use the lowest possible coefficients. Enter 0 if necessary. Do not leave any box blank.)

(b) Ni(NO3)2(aq) + Cr(s) Ni(s) + Cr(NO3)3(aq)
1-combination
2-decomposition
3-displacement

molecular equation
____ Ni(NO3)2(aq) + _____ Cr(s) 1_____Ni(s) + _____ Cr(NO3)3(aq)
reducing agent_____
oxidizing agent______

total ionic equation
____ Ni2+(aq) +____ NO3 -(aq) + ____Cr(s) ____ Ni(s) + ____Cr3+(aq) + ____ NO3 -(aq)

net ionic equation
____Ni2+(aq) +____ NO3 -(aq) +_____ Cr(s) ____ Ni(s) + ____Cr3+(aq) + ____NO3 -(aq)

(c) Fe(s) + HCl(aq) FeCl3(aq) + H2(g)
1-combination
2-decomposition
3-displacement

molecular equation
___Fe(s) + ____HCl(aq) ____ FeCl3(aq) + ____H2(g)

reducing agent____
oxidizing agent____

total ionic equation
____Fe(s) + ____H+(aq) +____ Cl -(aq) ____Fe3+(aq) +____ Cl -(aq) +____H2(g)

net ionic equation
____Fe(s) + _____H+(aq) +____ Cl -(aq) ____Fe3+(aq) +____ Cl -(aq) + ____H2(g)

Solutions

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