Areaction is a reaction in which the atoms of one element replace the atoms of a second element.
a. double replacement
b. single replacement
c. composition
d. decomposition
reset selection

Single replacement reaction.
one cation replaces another. written using generic symbols, it is:
ax + y > yx + a
element y has replaced a (in the compound ax) to form a new compound yx and the free element a. remember that a and y are both cations (postively-charged ions) in this example.some examples are:
cu + agno3  > ag + cu(no3)2
fe + cu(no3)2  > fe(no3)2  + cu

D-no effect on the rate