Purpose: To observe the various types of chemical reactions and their results.
Procedure:
❖ Examples will be conducted of the different types of chemical reactions
➢ 6 types of Simple Chemical Reactions
➢ Reversible Reactions
Data, Calculations, Conclusions:
Examples of 6 Types of Reactions:
❖ Double Displacement Reaction of two solutions: HCl (aq) and AgNO3 (aq)
➢ Reaction: white solid formed in tube = silver chloride (AgCl)
▪ two solution that were clear and colorless formed solid
➢ Ag+NO3- (silver nitrate solution) + H+Cl- (hydrochloric acid solution) ---> H+NO -3 (nitric
acid solution) + AgCl (silver chloride; precipitate)
➢ Double displacement reaction: a reaction in which the positive (+) and negative (-) ions
of two reactants are interchanged
❖ Double Displacement Reaction #2: Kl and Pb(NO3)2
➢ Two colorless solutions □ forms yellow solid of lead iodine (Pbl2) at the bottom of test
tube
▪ solid yellow was used for pigment in yellow paints □ led to lead poisoning in babies
➢ Pb+2 (NO3-)2(lead nitrate solution) + 2K+I- (potassium iodine solution) ---> K+NO-3
(potassium nitrate solution; colorless solution) + Pbl2. (lead iodine; yellow precipitate)
❖ Double Displacement Reaction #3 (Acid-Base): NaOH & HCl
➢ Acid-Base Reaction: a reaction in which the positive and negative ions of acid and base
reactants are interchanged with the evolution of heat and usually the formation of water
▪ Exothermic (heat given off)
➢ Acid- a reactant containing H+ ion which can be donated
➢ Base- a reactant whose anion (-ion) can accept H+ ion
❖ NaOH and HCl: Starting temperature of 21.5C for both
❖ After the two solutions combined, no solid or gases formed;
❖ Temperature is 30.5C and rising; over 10 degree rise
❖ H+Cl- (hydrogen chloride solution) + Na+OH- (sodium hydroxide solution) ---> Na+Cl-
Downloaded by Anna Maina (annamurugijoe@gmail.com)
Downloaded by Anna Maina (annamurugijoe@gmail.com)
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