Write observation and complete molecular equation. Identify the precipitant using solubility chart. B1: Phenolphthalein is pink in presence of NaOH. It will become colorless as HCl is added. Some heat can be felt. Observation: Equation: B2: Gas bubbles will evolve from the test tube when solid Na2CO3 is added to HCl. Observation: Equation:
Write observation and complete molecular equation. Identify the precipitant using solubility chart. B1: Phenolphthalein is pink in presence of NaOH. It will become colorless as HCl is added. Some heat can be felt. Observation: Equation: B2: Gas bubbles will evolve from the test tube when solid Na2CO3 is added to HCl. Observation: Equation:
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question
Write observation and complete molecular equation. Identify the precipitant using solubility chart.
B1: Phenolphthalein is pink in presence of NaOH. It will become colorless as HCl is added. Some heat can be felt.
Observation:
Equation:
B2: Gas bubbles will evolve from the test tube when solid Na2CO3 is added to HCl.
Observation:
Equation:
Transcribed Image Text:|ミ|ミ
>>>>E
|彡1彡
|彡
SOLUBILITY TABLE
CrO
CH,COO
Br
CO3-
OH
NO,
O-
PO
SO
AP
W
A
W
W
A
a
NH,*
W
W
W
W
W
W
W
W
W
--
Ba
W
W
W
W
W
W.
a
d
Ca2+
W
W
Cr
W
W
W
W
d.
--
a
Co+
W
W
W
A
A
W
W
A
A
W
A
Cu
W
W
W
A
a
W
A
W
H*
W
W
W
W
W
W
W
Fe
W
W
W
A
W
A
Fe+
W
W
W
A
W
A
d
A
W
d.
Mg
A
W
W
W
W
Hg"
A
W
A
A
W
A
a
W.
A
W
A
I
Hg*
W
W
W
Ni
W
W
W
W
A
W
W
W
W
W
W
W
W
K
W
W
W
A
Ag
a
--
W
a
10
W
W
W
W
d.
W
W
Na*
W
W
W
W
A
W
d.
A
A
W
A
Sn2+
D
W
W
A
A
A
Sn+
W
W
W
W
W
W
A
W
A
W
A
Zn
W
W
Key to abbreviations:
w= only slightly soluble in water, but soluble in acids
W= soluble in water
A= insoluble in water, but soluble in acids
I= insoluble in both water and acids
d= decomposes in water
a= insoluble in water, and only slightly soluble in acids
Transcribed Image Text:5.
Acids and caustic chemicals are stored in the hood. Please do not take these chemicals from the hood.
PART I - METATHETICAL REACTIONS
Metathetical reactions are sometimes called double-replacement reactions. In these reactions two compounds exchange ions with each
other. Metathetical reactions are usually carried out in aqueous
solution. The general formula for this type of reaction is
AC+BD→AD+BC
A.
PRECIPITATION REACTIONS
In this type of metathetical reaction, a precipitate is formed. The precipitate is indicated by an arrow pointing down or the
physical state indicator (s). The formation of a precipitate may be predicted by using solubility rules or a solubility chart.
Examples:
AgNO,(aq) + NaCl(aq) → AgCl(s) \ + NaN0;(aq)
In these reactions, all of the soluble compounds are considered dissociated into their ions. The ions, which are not involved in the
precipitate, are considered "spectator ions".
PROCEDURES: Perform each
Cd( NO; ), (aq) + (NH,),S(aq) → 2 NH, NO;(aq) + CdS(s)+
of the following reactions.
Write your observations in your
notebook and write the equation for each reaction. Indicate the precipitate.
1.
To a dropperful of 0.1 M calcium nitrate in a test tube, add a dropperful of 0.1 M sodium carbonate.
2.
To a dropperful of 0.1 M magnesium sulfate in a test tube, add a dropperful of 0.1 M sodium hydroxide.
3.
To a dropperful of 0.1 M sodium nitrate in a test tube, add a dropperful of 0.1 M potassium chloride.
В.
ACID-BASE REACTIONS
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