• A LABORATORY
EXAMINATION
OF DOUBLE
REPLACEMENT
REACTION

SAFETY
•
•
•

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

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

EXAMPLE/FORM EQUATION
• A
C
A
C
• THE CATIONS “TRADE” PLACES

THE REACTION
• WRITE THE BALANCED REACTION:
2
2(aq)
3(aq)
(aq)
CaCO
3(s)

MATERIALS
• RINGSTAND/WIRE TRIANGLE
• FUNNEL
• # 1 WHATMAN FILTER PAPER

MATERIALS
• ASSORTED BEAKERS
• ASSORTED FLASKS
• GLASS STIRRING ROD
• DRYING OVEN

REAGENTS
• Na
2
CO
3
SODIUM
CARBONATE
• CaCl
2
CALCIUM CHLORIDE

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

PROCEDURE CONTINUED
• POUR THE CONTENTS OF
THE BEAKER THROUGH
THE FILTER PAPER
FUNNEL ASSEMBLY

MORE PROCEDURE
• REMEMBER, PRE-MASS
THE DRY FILTER PAPER
BEFORE FILTERING

DATA AND CONCLUSIONS
• CONSTRUCT A DATA TABLE
• DESCRIBE WHY THE LAB RESULTS
OCCURRED IN CONCLUSION
• CALCULATE THEORETICAL YIELD,
THEN PERCENT YIELD AND
PERCENT ERROR

TECHNICAL WRITING PORTFOLIO
• WRITING FOR A SPECIFIC
PURPOSE
• NO FLOWERY PROSE, GET TO THE
POINT
• MATH IS A LANGUAGE,
CALCULATIONS ARE VITAL TO
WRITEUP

PURPOSE
• WRITING TO
,
MAKE A DECISION OR
LEARN HOW TO DO
SOMETHING

AUDIENCE
• TARGET A SPECIFIC GROUP
• OUR GROUP IS MIXED AUDIENCE,
IF YOU CAN WRITE DIRECTIONS
TO PUT A SWING SET TOGETHER
YOU CAN WRITE ANYTHING

ORGANIZATION
• WE WILL FOLLOW THE PROBLEM,
CAUSE, SOLUTION FORMAT
• THIS LENDS ITSELF TO THE
LABORATORY ORGANIZATION

WRITING
• CHOOSE THE DETAIL, AMOUNT OF
DESCRIPITION
• GRAPHICS ENHANCE THE IMPACT OF A
PAPER

COMPONENTS
• TITLE . TO THE POINT,
DESCRIPTIVE OF THE LAB.
• INTRODUCTION
. STATES CLEARLY THE
QUESTION/PROBLEM AND WHY LAB WAS
PERFORMED
• EXPERIMENTAL
DETAILS/RESULTS
: EXPLAINS WHAT
YOU DID AND WHY, AND LISTS RESULTS

MORE COMPONENTS
• CONCLUSIONS & DISCUSSION
ANALYZE THE RESULTS AND
EXPLAIN WHAT HAPPENED IN THE
LAB
• EXTENSIONS: “REAL WORLD”
USES OF THIS REACTION AND
LIME

STILL MORE COMPONENTS
• ACKNOWLEDGMENTS
. LIST WHO
CONTRIBUTED TO THE COMPLETION OF THE
LAB
• REFERENCES
. LIST ANY TEXTS OR
MATERIAL USED IN THE WRITING OF YOUR
PAPER

NUTS & BOLTS
• PAPER IN BLUE OR BLACK INK OR
WORD PROCESSED
• FRONT OF PAPER ONLY
• TITLE PAGE
• DRAWINGS/ILLUSTRATIONS
REQUIRED
• GOALPOSTS, GOALPOSTS,
GOALPOSTS

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