PREDICTING CHEMICAL REACTIONS:

Single displacement Reactions: Mg(s) + ZnCl2(aq) → Zn(s)+ MgCl2(aq) The most reactive element (Mg) will replace the least reactive element (Zn) in a compound.

Single displacement Reactions: Mg(s) + ZnCl2(aq) → Zn(s)+ MgCl2(aq) The most reactive element (Mg) will replace the least reactive element (Zn) in a compound. See Activity Series of metals

Activity Series of Metals:   Name Symbol Name Symbol Lithium Li Potassium K Calcium Ca Sodium Na Magnesium Mg Barium Ba Aluminum Al Zinc Zn Iron Fe Nickel Ni Tin Sn Lead Pb (Hydrogen) (H)* Copper Cu Silver Ag Platinum Pt Gold Au Halogens: All replace the H in water forming the metal hydroxide + H2 (g). Fluorine F Chlorine Cl Bromine Br Iodine I Reactivity decreases

EXERCISE: Predict if the following reactions will occur. If yes, complete the chemical balanced equation : 1) Ca(s) + ZnCl2(aq) → 2) Fe(s) + KOH(aq) → 3) HCl(aq) + Zn(s) → 4) HCl(aq) + Cu(s) →

EXERCISE: Predict if the following reactions will occur. If yes, complete the chemical balanced equation: 1) Ca(s) + ZnCl2(aq) → CaCl2(aq) + Zn(s) 2) Fe(s) + NaOH(aq) → 3) HCl(aq) + Zn(s) → 4) HCl(aq) + Cu(s) →

EXERCISE: Predict if the following reactions will occur. If yes, complete the chemical balanced equation : 1) Ca(s) + ZnCl2(aq) → CaCl2(aq) + Zn(s) 2) Fe(s) + NaOH(aq) → N/R 3) HCl(aq) + Zn(s) → 4) HCl(aq) + Cu(s) →

EXERCISE: Predict if the following reactions will occur. If yes, complete the chemical balanced equation : 1) Ca(s) + ZnCl2(aq) → CaCl2(aq) + Zn(s) 2) Fe(s) + NaOH(aq) → N/R 3) HCl(aq) + Zn(s) → 4) HCl(aq) + Cu(s) →

EXERCISE: Predict if the following reactions will occur. If yes, complete the chemical balanced equation : 1) Ca(s) + ZnCl2(aq) → CaCl2(aq) + Zn(s) 2) Fe(s) + NaOH(aq) → N/R 3) HCl(aq) + Zn(s) → ZnCl2(aq) + H2(g) 4) HCl(aq) + Cu(s) →

EXERCISE: Predict if the following reactions will occur. If yes, complete the chemical balanced equation : 1) Ca(s) + ZnCl2(aq) → CaCl2(aq) + Zn(s) 2) Fe(s) + NaOH(aq) → No 3) 2HCl(aq) + Zn(s) → ZnCl2(aq) + H2(g) 4) HCl(aq) + Cu(s) →

EXERCISE: Predict if the following reactions will occur. If yes, complete the chemical balanced equation : 1) Ca(s) + ZnCl2(aq) → CaCl2(aq) + Zn(s) 2) Fe(s) + NaOH(aq) → No 3) 2HCl(aq) + Zn(s) → ZnCl2(aq) + H2(g) 4) HCl(aq) + Cu(s) → N/R

A halogen can also replace another halogen from a compound: The activity of halogens decreases as you go down Group 7A of the periodic table (F, Cl, Br, & I). Br2(aq) + 2NaI(aq) → * Bromine is more active than iodine, so the reaction occurs. Br2(aq) + NaCl(aq) → * But bromine is less active than chlorine, so this reaction does not occur. 2 NaBr(aq) + I2 (aq) N/R

Double displacement Reactions 2KI(aq) + Pb(NO3)2(aq) → PbI2 (s)+ 2KNO3(aq) They generally take place in aqueous solution and often produce a precipitate, a gas, a liquid, or a molecular compound such as water.

Double displacement Reactions 2KI(aq) + Pb(NO3)2(aq) → PbI2 (s)+ 2KNO3(aq) They generally take place in aqueous solution and often produce a precipitate, a gas, a liquid, or a molecular compound such as water. Examples: KCl(aq) + AgNO3(aq) → NaOH(aq) + HCl(aq) → HCI(aq) + CaCO3(s) →

Double displacement Reactions 2KI(aq) + Pb(NO3)2(aq) → PbI2 (s)+ 2KNO3(aq) They generally take place in aqueous solution and often produce a precipitate, a gas, a liquid, or a molecular compound such as water. Examples: KCl(aq) + AgNO3(aq) → AgCl(s)+ KNO3(aq) NaOH(aq) + HCl(aq) → HCI(aq) + CaCO3(s) →

Double displacement Reactions 2KI(aq) + Pb(NO3)2(aq) → PbI2 (s)+ 2KNO3(aq) They generally take place in aqueous solution and often produce a precipitate, a gas, a liquid, or a molecular compound such as water. Examples: KCl(aq) + AgNO3(aq) → AgCl(s)+ KNO3(aq) NaOH(aq) + HCl(aq) → NaCl(aq)+ H2O(l) HCI(aq) + CaCO3(s) →

Double displacement Reactions 2KI(aq) + Pb(NO3)2(aq) → PbI2 (s)+ 2KNO3(aq) They generally take place in aqueous solution and often produce a precipitate, a gas, a liquid, or a molecular compound such as water. Examples: KCl(aq) + AgNO3(aq) → AgCl(s)+ KNO3(aq) NaOH(aq) + HCl(aq) → NaCl(aq)+ H2O(l) HCI(aq) + CaCO3(s) → CaCI2 (aq)+ H2O(l)+ CO2(g)

Double displacement Reactions 2KI(aq) + Pb(NO3)2(aq) → PbI2 (s)+ 2KNO3(aq) They generally take place in aqueous solution and often produce a precipitate, a gas, a liquid, or a molecular compound such as water. Examples: KCl(aq) + AgNO3(aq) → AgCl(s)+ KNO3(aq) NaOH(aq) + HCl(aq) → NaCl(aq)+ H2O(l) 2HCI(aq) + CaCO3(s) → CaCI2 (aq)+ H2O(l)+ CO2(g)

Exercise: Predict and complete: 1) Zn(s) + Cu(NO3)2(aq) → 2) Cu(s) + Zn(NO3)2(aq) → 3) NaOH(aq) + Zn(NO3)2(aq) → 4) KCl(aq) + Mg(NO3)2(aq) →

Zn(s) + Cu(NO3)2(aq) → Yes (Zn is more reactive than Cu) 2) Cu(s) + Zn(NO3)2(aq) → 3) NaOH(aq) + Zn(NO3)2(aq) → 4) KCl(aq) + Mg(NO3)2(aq) →

Zn(s) + Cu(NO3)2(aq) → Yes (Zn is more reactive than Cu) Zn(s) + Cu(NO3)2(aq) → Zn(NO3)2(aq) + Cu(s) 2) Cu(s) + Zn(NO3)2(aq) → 3) NaOH(aq) + Zn(NO3)2(aq) → 4) KCl(aq) + Mg(NO3)2(aq) →

Zn(s) + Cu(NO3)2(aq) → Yes (Zn is more reactive than Cu) Zn(s) + Cu(NO3)2(aq) → Zn(NO3)2(aq) + Cu(s) 2) Cu(s) + Zn(NO3)2(aq) → NO (Cu is less reactive than Zn) 3) NaOH(aq) + Zn(NO3)2(aq) → 4) KCl(aq) + Mg(NO3)2(aq) →

Zn(s) + Cu(NO3)2(aq) → Yes (Zn is more reactive than Cu) Zn(s) + Cu(NO3)2(aq) → Zn(NO3)2(aq) + Cu(s) 2) Cu(s) + Zn(NO3)2(aq) → NO (Cu is less reactive than Zn) 3) NaOH(aq) + Zn(NO3)2(aq) → Yes ( Zn(OH)2 is insoluble) 4) KCl(aq) + Mg(NO3)2(aq) →

Zn(s) + Cu(NO3)2(aq) → Yes (Zn is more reactive than Cu) Zn(s) + Cu(NO3)2(aq) → Zn(NO3)2(aq) + Cu(s) 2) Cu(s) + Zn(NO3)2(aq) → NO (Cu is less reactive than Zn) 3) NaOH(aq) + Zn(NO3)2(aq) → Yes ( Zn(OH)2 is insoluble) NaOH(aq) + Zn(NO3)2(aq) → NaNO3(aq) + Zn(OH)2(s) 4) KCl(aq) + Mg(NO3)2(aq) →

Zn(s) + Cu(NO3)2(aq) → Yes (Zn is more reactive than Cu) Zn(s) + Cu(NO3)2(aq) → Zn(NO3)2(aq) + Cu(s) 2) Cu(s) + Zn(NO3)2(aq) → NO (Cu is less reactive than Zn) 3) NaOH(aq) + Zn(NO3)2(aq) → Yes ( Zn(OH)2 is insoluble) NaOH(aq) + Zn(NO3)2(aq) → 2NaNO3(aq) + Zn(OH)2(s) 4) KCl(aq) + Mg(NO3)2(aq) →

Zn(s) + Cu(NO3)2(aq) → Yes (Zn is more reactive than Cu) Zn(s) + Cu(NO3)2(aq) → Zn(NO3)2(aq) + Cu(s) 2) Cu(s) + Zn(NO3)2(aq) → NO (Cu is less reactive than Zn) 3) NaOH(aq) + Zn(NO3)2(aq) → Yes ( Zn(OH)2 is insoluble) 2NaOH(aq) + Zn(NO3)2(aq) → 2NaNO3(aq) + Zn(OH)2(s) 4) KCl(aq) + Mg(NO3)2(aq) →

Zn(s) + Cu(NO3)2(aq) → Yes (Zn is more reactive than Cu) Zn(s) + Cu(NO3)2(aq) → Zn(NO3)2(aq) + Cu(s) 2) Cu(s) + Zn(NO3)2(aq) → NO (Cu is less reactive than Zn) 3) NaOH(aq) + Zn(NO3)2(aq) → Yes ( Zn(OH)2 is insoluble) 2NaOH(aq) + Zn(NO3)2(aq) → 2NaNO3(aq) + Zn(OH)2(s) 4) KCl(aq) + Mg(NO3)2(aq) → NO (no precipitate, liquid or gas is . formed).