Question

Which reactions are single displacement reactions?

Answer 1

The format of any single replacement reaction can be written as

XY + Z —> ZY + X

You have a lone ion and (typically) an ionic compound. The lone ion will switch with a part of the ionic compound.

For example:

NaBr + Li —> LiBr + Na

You can see that the Lithium and Sodium switch places.

It might help to just remove the coefficients from the equations to just look at the interaction of the species.

Hint: there are two in the list that you provided

Hope this helps

Answer 2

Answer:

- $SnO_2+2H_2-->Sn+2H_2O$

- $2Al+6HCl-->2AlCl_3+3H_2$

Explanation:

Hello,

Single displacement reactions happen when one compound reacts with a single element or molecule to yield one compound and a single element or molecule as well by exchanging the cation or the anion depending on the case, in such a way, the reactions that accomplish the definitions are:

- $SnO_2+2H_2-->Sn+2H_2O$

- $2Al+6HCl-->2AlCl_3+3H_2$

Best regards.