Chapter 3 Reactions in Solutions

Indicator shows solution is basic know the strong

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Unformatted text preview: 2O(liq) O(liq) --> Ca(OH)2(aq) --> CaO in water. Indicator shows solution is basic. Know the strong acids & bases! acids Net Ionic Net Ionic Equations Mg(s) + 2 HCl(aq) --> H2(g) + (g) MgCl2(aq) MgCl We really should write Mg(s) + -2ons (aq) PECTATOR IONS — H+ are SPECTATOR ---> + 2 Cl-(aq) (aq) The two Cl i The S they do not participate. Could have used2+(aq) they H2(g) + Mg NO3-. (aq) Net Ionic Equations Net Ionic Equations Net Ionic Equations Mg(s) + 2 HCl(aq) Mg(s) --> H2(g) + --> (g) MgCl2(aq) MgCl We + 2 the spectator Cl- (aq) out Mg(s) leave H+(aq) + 2ions(aq)— Mg(s) + 2 H+(aq) ---> H2(g) +2+ 2+(aq) Mg ---> H2(g) + Mg (aq) + ---> (aq) 2givel-the NET IONIC EQUATION to C (aq) ET N Chemical Reactions in Water Chemical Reactions in Water Sections 5.2 & 5.4­5.6—CD­ROM Ch. 5 We will look at We EXCHANGE EXCHANGE REACTIONS A +B X Y A +B Y X The anions exchange places between cations. between Pb(NO3) 2(aq) + 2 KI(aq) ----> PbI2(s) + 2 KNO3 (aq) Precipitation Reactions Precipitation Reactions The “driving force” is the formation of The an insoluble compound — a precipitate. precipitate. Pb(NO3)2(aq) + 2 KI(aq) -----> 2 KNO3(aq) +...
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