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DOUBLE REPLACEMENT PRACTICE REACTIONS example

DOUBLE REPLACEMENT PRACTICE REACTIONS - Library

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5) AgNO3 + KCl --->6) Na 2 CO3 + H 2 SO 4 --->7) Al(OH) 3 + HC 2 H 3 O 2 --->8) Al 2 (SO 4 ) 3 + Ca 3 (PO 4 ) 2 --->9) Cr 2 (SO 3 ) 3 + H 2 SO 4 --->10) AgC 2 H 3 O 2 + K 2 CrO 4 --->11) FeBr 2 + K 2 CO 3 --->Replacement Worksheet-Chem 1212


12) Ag 2 S + CuCl 2 --->13) Pb(NO 3 ) 2 + HI --->14) Ba(ClO 3 ) 2 + H 2 SO 4 --->15) CuS + KCl --->SINGLE <strong>REPLACEMENT</strong>REACTION DESCRIPTIONIn these reactions, a free element reacts with a compoundto form another compound and release one of the elementsof the original compound in the elemental state. There aretwo different possibilities:1. One cation (+ ion) replaces another.2. One anion (- ion) replaces another.REACTION FORMAT1. AX+ B ----> BX + A2. Y + AX ----> AY + XREACTION GUIDELINES1. In a single replacement reaction atoms of one element replacethe atoms of a second element in a compound.A metal will replace another metal from a compoundA nonmetal will replace another nonmetal from a compoundReplacement Worksheet-Chem 1213


2. Watch out for diatomic molecules. These elements only exist in compounds or asdiatomic molecules.H 2 , N 2 , O 2 , F 2 , Cl 2 , Br 2 , I 2EXAMPLES1. Mg + Zn(NO3)2 ----> Mg(NO3)2 + ZnMg replaces Zn;Mg + 2 AgNO3 -----> Mg(NO3)2 + 2 AgMg replaces Ag;2. Cl2+ 2NaBr ---> 2NaCl + Br2Cl replaces Br. Note that chlorine and bromine are diatomic moleculesFor each reaction predict the products and balance the equation. State thereaction in chemical formulas and in symbols. For <strong>example</strong>:Mg + 2 AgNO3 ----->Magnesium + silver nitrate magnesium nitrate + silverMg + 2 AgNO 3 -----> Mg(NO 3 ) 2 + 2 Ag1. Ag + KNO 3 ----->2. Zn + AgNO 3 ----->3. Al + H 2 SO 4 ----->4. Cl 2 + KI ----->5. Li + H 2 O ----->6. Cu + FeSO 4 ----->Replacement Worksheet-Chem 1214


7. Na + H 2 O ----->8. Fe + Pb(NO 3 ) 2 ----->9. Cu + H 2 O ----->10. Cu + Al 2 (SO 4 ) 3 ---->11. Al + Pb(NO 3 ) 2 ---->12. Cl 2 + NaI --->13. Fe + AgC 2 H 3 O 2 --->14. Al + CuCl 2 --->15. Br 2 + CaI 2 --->Replacement Worksheet-Chem 1215

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