Question

Which of the following reactions are not possible and why?
1. FeSO4 + Mg + MgSO4 + Fe
2. ZnSO4 + Ag → AgSO4 + Zn
3. Pb(NO3)2+ Ca - Ca(NO3)2+ Pb
4.H2SO4+ Cu → CuSO4 +H2
5. HgCl2+ Mg → MgCl2 + Hg
6. 2MgO+2Mg +02
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Answer 1

Answer:

I displacement

2 displacement

3 displacement

4 displacement and exothermic

5 displacement

6 decomposition