Chapter 4 - Reactions in Aqueous Solution

Pay attention to stoichiometryHCl(aq) + NaOH(aq) → H2O(l) + NaCl(aq)HCl(aq) + Ba(OH)2(aq) → 2 H2O(l) + BaCl2(aq)H2SO4(aq) + 2 NaOH(aq) → 2 H2O(l) + Na2SO4(aq)Weak acid and strong baseHCN(aq) + NaOH(aq) → H2O(l) + NaCN(aq)Weak base and strong acidHNO3(aq) + NH3(aq) → NH4NO3(aq)In solution, NH3 reacts with water to produce NH4 + and OH–.HNO3(aq) + NH4 + (aq) + NO3 – (aq) → H2O(l) + NH4NO3(aq)Acid-Base Reactions with Gas Formation2HCl ( aq)+ Na 2 S ( aq)→ H 2 S ( g)+ 2NaCl ( aq)2H + ( aq) + S 2− ( aq) → H 2 S ( g)Carbonates and BicarbonatesHCl ( aq)+ NaHCO 3 ( aq) → H 2 CO 3( aq) + NaCl ( aq)H 2 CO 3 ( aq) → H 2O ( l)+ CO 2 ( g)H + +( aq) +HCO 3 ( aq)→ H2 O ( l)+ CO 2( g)Ch 4 Reactions in Aqueous Solution - 8 -