For each pair of reactants, will there be a reaction?
The Correct Answer and Explanation is :
Reaction Analysis for Given Reactant Pairs
To determine whether a reaction will occur, we need to analyze the activity series of metals. A metal will replace another metal in a compound only if it is more reactive (i.e., higher in the activity series). The activity series ranks metals from most reactive to least reactive. Here’s the assessment:
1. Al(s) + Ba(NO₃)₂(aq) → No Reaction
- Explanation: Aluminum (Al) is lower than Barium (Ba) in the activity series, meaning Al is less reactive than Ba. Since Al cannot replace Ba in Ba(NO₃)₂, no reaction occurs.
2. Cr(s) + Co(NO₃)₂(aq) → Reaction Occurs
- Explanation: Chromium (Cr) is higher than Cobalt (Co) in the activity series. This means Cr is more reactive and can displace Co from Co(NO₃)₂, forming Cr(NO₃)₃ and solid Co.
- Balanced Reaction:
[
2Cr(s) + 3Co(NO₃)₂(aq) → 2Cr(NO₃)₃(aq) + 3Co(s)
]
3. Zn(s) + HCl(aq) → Reaction Occurs
- Explanation: Zinc (Zn) is more reactive than Hydrogen (H₂). Zn will react with hydrochloric acid (HCl), replacing hydrogen and forming ZnCl₂ and H₂ gas.
- Balanced Reaction:
[
Zn(s) + 2HCl(aq) → ZnCl₂(aq) + H₂(g)
]
4. Zn(s) + CuSO₄(aq) → Reaction Occurs
- Explanation: Zinc (Zn) is more reactive than Copper (Cu) and will replace Cu from CuSO₄, forming ZnSO₄ and solid Cu.
- Balanced Reaction:
[
Zn(s) + CuSO₄(aq) → ZnSO₄(aq) + Cu(s)
]
Conclusion
- No reaction: Al(s) + Ba(NO₃)₂(aq)
- Reaction occurs: Cr(s) + Co(NO₃)₂(aq)
- Reaction occurs: Zn(s) + HCl(aq)
- Reaction occurs: Zn(s) + CuSO₄(aq)
Now, I will generate an image representing these reactions.
The image visually represents the chemical reactions, showing which ones occur and which do not. Let me know if you need any modifications or further explanations!
