Comment; Complaint; Link; Kwadwo March 11, 3:54 PM. In a single replacement reaction atoms of one element replace the atoms of a second element in a compound. CHEMISTRY SINGLE REPLACEMENT REACTION WORKSHEET Author: SaucemanM Last modified by: Christopher Squires Created Date: 10/29/2010 5:02:00 AM Company: Hamblen County Department of Education Other titles: CHEMISTRY SINGLE REPLACEMENT REACTION WORKSHEET During single replacement, one element replaces another element in a compound. Whether one metal will replace another metal from a compound can be deter- mined by the relative reactivities of the two metals. Whether one metal will replace another metal from a compound can be deter mined by the relative reactivities of the two metals. A single replacement reaction occurs when an element reacts with a compound to produce a new element and a new compound. Answers (2) Tyray March 11, 5:29 PM. KOH + HCl → KCl + H2O Cu + 2AgNO3 → 2Ag + Cu (NO3) 2. In a single replacement reaction atoms of one element replac the atoms of a second element in a compound. A single-displacement reaction, is a chemical reaction in which one element is replaced by another in a compound. 0. 0. The last equation you have written out would be the correct single replacement reaction. Single replacement is a type of oxidation-reduction chemical reaction when an element or ion moves out of one compound and into another- that is, one element is replaced by another in a compound. To help us determine this, an activity series of metals arranges metals in or-der of decreasing reactivity. To help us determine this, an activity series of metals arranges metals in o der of decreasing reactivity. If you add ammonia solution to a solution containing hexaaquacopper(II) ions, [Cu(H 2 O) 6] 2+, four of the water molecules are eventually replaced by ammonia molecules to give [Cu (NH 3) 4 (H 2 O) 2] 2+. Cu + AgNO3 ---> Ag + Cu(NO3)2 Fe + Cu(NO3)2 ---> Fe(NO3)2 + Cu Ca + H2O ---> Ca(OH)2 + H2 This will most often occur if A is more reactive than B, thus giving a more stable product. It can be represented generically as: A + B-C → A-C + B.