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Slide 1

DOUBLE REPLACEMENT

DOUBLE REPLACEMENT

A LABORATORY EXAMINATION OF DOUBLE REPLACEMENT REACTION

Slide 2

SAFETY

SAFETY

GOGGLES

HAIR TIED BACK

APRONS

Slide 3

Chemical theory

Chemical theory

THERE ARE MANY TYPES DOUBLE REPLACEMENT REACTIONS, SUCH AS ACID-BASE NEUTRALIZATION AND PRECIPITATION.

Slide 4

Precipitate reactions

Precipitate reactions

THESE ARE REACTIONS IN WHICH AN INSOLUBLE SOLID IS FORMED AND SETTLES OUT OF SOLUTION, THE PRECIPITATE.

Slide 5

Example/form equation

Example/form equation

AB + CD ----> AD + CB

THE CATIONS “TRADE” PLACES

Slide 6

The reaction

The reaction

WRITE THE BALANCED REACTION:

CaCl2(aq) + Na2CO3(aq) -----> 2NaCl(aq) + CaCO3(s)

Slide 7

Materials

Materials

RINGSTAND/WIRE TRIANGLE

FUNNEL

# 1 WHATMAN FILTER PAPER

Slide 8

MATERIALS

MATERIALS

ASSORTED BEAKERS

ASSORTED FLASKS

GLASS STIRRING ROD

DRYING OVEN

Slide 9

Reagents

Reagents

Na2CO3 SODIUM CARBONATE

CaCl2 CALCIUM CHLORIDE

Slide 10

Procedure

Procedure

ADD 1 GRAM OF EACH “SALT” TO 20 mL OF WATER IN TWO SEPARATE BEAKERS AND DISSOLVE, THEN MIX SOLUTIONS IN COMMON BEAKER

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Procedure continued

Procedure continued

POUR THE CONTENTS OF THE BEAKER THROUGH THE FILTER PAPER FUNNEL ASSEMBLY

Slide 12

More procedure

More procedure

REMEMBER, PRE-MASS THE DRY FILTER PAPER BEFORE FILTERING

Slide 13

Data and conclusions

Data and conclusions

CONSTRUCT A DATA TABLE

DESCRIBE WHY THE LAB RESULTS OCCURRED IN CONCLUSION

CALCULATE THEORETICAL YIELD, THEN PERCENT YIELD AND PERCENT ERROR

Slide 14

Technical writing portfolio

Technical writing portfolio

WRITING FOR A SPECIFIC PURPOSE

NO FLOWERY PROSE, GET TO THE POINT

MATH IS A LANGUAGE, CALCULATIONS ARE VITAL TO WRITEUP

Slide 15

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