How you can determine if a chemical reaction represents a singledisplacement reaction or double displacement reaction?

Answer 1

single-replacement reactions and a double-replacement reactions differ in the fact that in a single-replacement reaction only one element that has a positive charge is oxidized or looses electrons. In double-replacement reactions two elements in a compound that contain a positive charge are oxidized.

Answer 2

The best way to explain that is to just show an example of each in equation form, then you can see it.

A single displacement reaction would be:

2AgNO3 + Cu --> Cu(NO3)2 + 2Ag

As you can see, the copper is simply replacing the silver. That's one displacement.

A double displacement reaction would be:

3Na2CO3 + 2FeCl3 --> 6NaCl + Fe2(CO3)3

As you can see, the sodium has replaced the iron AND the iron has replaced the sodium. So there are two displacements.

In a single displacement reaction, you're always going to have 1 element as a reactant and a different element as a product. In a double displacement reaction, they're all compounds.

Answer 3

A single replacement reaction is one in which one element replaces another in a compound. A general equation is A + BC --> AC + B.

A double replacement reaction is one in which the cations and anions of two different compounds switch places. A general equation is AB + XY --> AY + XB, in which A and X are the cations (postively-charged ions) in this example, with B and Y being the anions (negatively-charged ions).

Answer 4

The general equation for a double replacement is AB + CD ==> AD + CB. Look for the "partners" changing place. If both are soluble, and no gas is produced, and no weak electrolyte is involved, and no H2O(l) is formed, then even though it appears as though "partners" changed place, there is "no reaction". An example of this might be 2NaCl + MgSO4==> MgCl2 + Na2SO4, since no ppt, no water, no weak electrolyte and no gas, there is no reaction even though the partners appear to change place.

Answer 5

if it has 2 or more atoms in it it is double displacement reaction

Answer 6

Fgg