Investigation 7 Test Would the following reactions happen? K+HClarrow square Cu+Fe(C_(2)H_(3)O_(2))_(2)arrow square Zn+FeCO_(3)arrow square Cu+Zn(NO_(3))_(2)arrow square

Let's analyze each reaction step by step to determine if they will happen:<br /><br />1. **Reaction: $K+HCl\rightarrow \square $**<br /> - Potassium (K) is a highly reactive metal and will readily react with hydrochloric acid (HCl).<br /> - The products of this reaction are potassium chloride (KCl) and hydrogen gas (H₂).<br /> - **Reaction:** $2K + 2HCl \rightarrow 2KCl + H_2$<br /><br />2. **Reaction: $Cu+Fe(C_{2}H_{3}O_{2})_{2}\rightarrow \square $**<br /> - Copper (Cu) is less reactive than iron (Fe), so it will not displace iron from iron(II) acetate ($Fe(C_2H_3O_2)_2$).<br /> - No reaction will occur because copper is below iron in the reactivity series.<br /> - **Reaction:** No reaction<br /><br />3. **Reaction: $Zn+FeCO_{3}\rightarrow \square $**<br /> - Zinc (Zn) is more reactive than iron (Fe), so it can displace iron from iron(II) carbonate ($FeCO_3$).<br /> - The products of this reaction are zinc carbonate ($ZnCO_3$) and iron (Fe).<br /> - **Reaction:** $Zn + FeCO_3 \rightarrow ZnCO_3 + Fe$<br /><br />4. **Reaction: $Cu+Zn(NO_{3})_{2}\rightarrow \square $**<br /> - Copper (Cu) is less reactive than zinc (Zn), so it will not displace zinc from zinc nitrate ($Zn(NO_3)_2$).<br /> - No reaction will occur because copper is below zinc in the reactivity series.<br /> - **Reaction:** No reaction<br /><br />In summary:<br />1. $K + HCl \rightarrow 2KCl + H_2$<br />2. No reaction<br />3. $Zn + FeCO_3 \rightarrow ZnCO_3 + Fe$<br />4. No reaction