Question

using your activity series, determine if the reactions below will occur. if the reaction will not occur, write no reaction. if the reaction will occur, predict the products of the reaction and write a balanced chemical reaction.
a. ag + cu(no₃)₂ → ______
b. mgcl₂ + ba → ______
c. zn + hcl → ______
d. al + cu(no₃)₂ → ______
e. au + hbr → ______

Explanation:

Step1: Check reactivity for (a)

Copper is more reactive than gold. So, $\text{Au} + \text{Cu(NO}_3\text{)}_2
ightarrow \text{No Reaction}$

Step2: Check reactivity for (b)

Barium is more reactive than magnesium. Swap metals, balance:

$$\text{MgCl}_2 + \text{Ba} ightarrow \text{Mg} + \text{BaCl}_2$$

Step3: Check reactivity for (c)

Zinc is more reactive than hydrogen. Swap, balance:

$$\text{Zn} + 2\text{HCl} ightarrow \text{H}_2 + \text{ZnCl}_2$$

Step4: Check reactivity for (d)

Aluminum is more reactive than copper. Swap metals, balance:

$$2\text{Al} + 3\text{Cu(NO}_3\text{)}_2 ightarrow 3\text{Cu} + 2\text{Al(NO}_3\text{)}_3$$

Step5: Check reactivity for (e)

Gold is less reactive than hydrogen. So, $\text{Au} + \text{HBr}
ightarrow \text{No Reaction}$

Answer:

a. No Reaction
b. $\boldsymbol{\text{MgCl}_2 + \text{Ba}
ightarrow \text{Mg} + \text{BaCl}_2}$
c. $\boldsymbol{\text{Zn} + 2\text{HCl}
ightarrow \text{H}_2 + \text{ZnCl}_2}$
d. $\boldsymbol{2\text{Al} + 3\text{Cu(NO}_3\text{)}_2
ightarrow 3\text{Cu} + 2\text{Al(NO}_3\text{)}_3}$
e. No Reaction