Using the activity series provided. Which reactants will form products?

Na > Mg > Al > Mn > Zn > Cr > Fe > Cd > Co > Ni > Sn > Pb > H > Sb > Bi > Cu > Ag

1. Ag +NaNO3

2. Fe + Al2O3

3. Ni + NaCl

4. Fe + Cu(NO3)2

Respuesta :

All the reactions given are single displacement reactions and can only occur if the metal is more reactive than the metal in the salt. In the first equation, silver is much less reactive than sodium so no reaction occurs. Same goes for the other 2. However the last equation will occur as iron is more reactive than copper and will displace it out of solution, forming copper metal and iron nitrate. Therefore the 4th reaction will form products

Its metal series depicted above could be known as that of the activity series. It is a guide that will help us better understand which products are formed during a metal displacement process. As displacement can occur, metal should be elevated above those metal combinations.

  • As compared to Na, Ag is substantially lower inside the series. There is no reaction.
  • If Al is higher than Fe, no reaction occurs.
  • If Na is more than Ni, no reaction will occur.
  • Copper is a less active metal than Fe. There'll be a displacement reaction.

Therefore, the answer is "Option 4".

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