starter s-105 1.how many grams of copper (ii) chloride are in 3.83 x 10 21 formula units?
TRANSCRIPT
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Starter S-105
1. How many grams of copper (II) chloride are in 3.83 x 1021 formula units?
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Chemical Reactions
Chapter 11
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11.1 Describing Chemical Reactions
Chapter 11
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Writing Chemical Reactions
Word Equations – gives the names of compounds and elements in the equation
reactants products
Reactants – compounds and elements before the reaction
Products – compounds and elements after the reaction
11.1 Describing Chemical Reactions
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Different compounds, or elements are separated by a plus sign
Copper + Oxygen Copper (II) Oxide
These are often converted from descriptions of the reaction
11.1 Describing Chemical Reactions
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When antiseptic hydrogen peroxide is put in an open cut bubbles of oxygen form rapidly. Water is also produced.
Reaction – reactants
hydrogen peroxide
11.1 Describing Chemical Reactions
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When antiseptic hydrogen peroxide in an open cut bubbles of oxygen from rapidly. Water is also produced.
Reaction – products
hydrogen peroxide
11.1 Describing Chemical Reactions
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When antiseptic hydrogen peroxide in an open cut bubbles of oxygen from rapidly. Water is also produced.
Reaction – products
hydrogen peroxide oxygen + water
11.1 Describing Chemical Reactions
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When a stove burner is lit, methane gas reacts with oxygen to form carbon dioxide and water.
Reaction – reactants
methane gas + oxygen
11.1 Describing Chemical Reactions
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When a stove burner is lit, methane gas reacts with oxygen to carbon dioxide and water.
Reaction – products
methane gas + oxygen
11.1 Describing Chemical Reactions
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When a stove burner is lit, methane gas reacts with oxygen to carbon dioxide and water.
Reaction – products
methane gas + oxygen carbon dioxide + water
11.1 Describing Chemical Reactions
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Chemical Equations – replace the names of compounds and elements with the chemical formula
hydrogen peroxide oxygen + water
H2O2 O2 + H2O
Remember diatomic elements
11.1 Describing Chemical Reactions
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methane gas + oxygen carbon dioxide + water
CH4 + O2 CO2 + H2O
11.1 Describing Chemical Reactions
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Usually the state of
each compound
or element is
given beside the
formula
CH4(g)+ O2(g) CO2(g) + H2O(g)
Solid (s)
Liquid (l)
Gas (g)
Aqueous (aq)
11.1 Describing Chemical Reactions
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Starter S-106
When solutions of potassium iodide and lead (II) nitrate are mixed in a beaker, a brilliant yellow solid is formed. This solid when analyzed turns out to be lead (II) iodide. Further analysis shows that potassium nitrate is now dissolved in the water.
A. Write the word equation.
B. Write the chemical equation
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Balancing Chemical Equations – both sides of a chemical equation have the same number of each atom
Mass is conserved
11.1 Describing Chemical Reactions
Balancing Demo
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Example
Al + O2 Al2O3
1. Write elements on each side and how many of each are present
11.1 Describing Chemical Reactions
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Example
Al + O2 Al2O3
Al – 1 Al – 2
O – 2 O – 3
2. Add one element at a time to the side that doesn’t have enough
11.1 Describing Chemical Reactions
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Al
Al + O2 Al2O3
Al – 2 Al – 2
O – 2 O – 3
11.1 Describing Chemical Reactions
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Al O2
Al + O2 Al2O3
Al – 2 Al – 2
O – 4 O – 3
11.1 Describing Chemical Reactions
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Al O2 Al2O3
Al + O2 Al2O3
Al – 2 Al – 4
O – 4 O – 6
11.1 Describing Chemical Reactions
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Al,Al,Al O2 Al2O3
Al + O2 Al2O3
Al – 4 Al – 4
O – 4 O – 6
11.1 Describing Chemical Reactions
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Al,Al,Al O2,O2 Al2O3
Al + O2 Al2O3
Al – 4 Al – 4
O – 6 O – 6
Balanced
3. Count the number of each compound or element – write a coefficient for each
11.1 Describing Chemical Reactions
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4Al + 3O2 2Al2O3
11.1 Describing Chemical Reactions
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Balance the following equationsA. Cu + AgNO3 Cu(NO3)2 + Ag
11.1 Describing Chemical Reactions
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Balance the following equationsA. Cu + 2AgNO3 Cu(NO3)2 + 2Ag
B. FeCl3 + NaOH Fe(OH)3 + NaCl
11.1 Describing Chemical Reactions
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Balance the following equationsA. Cu + 2AgNO3 Cu(NO3)2 + 2Ag
B. FeCl3 + 3NaOH Fe(OH)3 + 3NaCl
C. CS2 + Cl2 CCl4 + S2Cl2
11.1 Describing Chemical Reactions
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Balance the following equationsA. Cu + 2AgNO3 Cu(NO3)2 + 2Ag
B. FeCl3 + 3NaOH Fe(OH)3 + 3NaCl
C. CS2 + 3Cl2 CCl4 + S2Cl2D. AgNO3 + H2S Ag2S + HNO3
11.1 Describing Chemical Reactions
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Balance the following equationsA. Cu + 2AgNO3 Cu(NO3)2 + 2Ag
B. FeCl3 + 3NaOH Fe(OH)3 + 3NaCl
C. CS2 + 3Cl2 CCl4 + S2Cl2D. 2AgNO3 + H2S Ag2S + 2HNO3
E. Zn(OH)2 + H3PO4 Zn3(PO4)2 + H2O
11.1 Describing Chemical Reactions
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Balance the following equationsA. Cu + 2AgNO3 Cu(NO3)2 + 2Ag
B. FeCl3 + 3NaOH Fe(OH)3 + 3NaCl
C. CS2 + 3Cl2 CCl4 + S2Cl2D. 2AgNO3 + H2S Ag2S + 2HNO3
E. 3Zn(OH)2 + 2H3PO4 Zn3(PO4)2 + 6H2O
F. Fe2O3 + H2 Fe + H2O
11.1 Describing Chemical Reactions
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Balance the following equationsA. Cu + 2AgNO3 Cu(NO3)2 + 2Ag
B. FeCl3 + 3NaOH Fe(OH)3 + 3NaCl
C. CS2 + 3Cl2 CCl4 + S2Cl2D. 2AgNO3 + H2S Ag2S + 2HNO3
E. 3Zn(OH)2 + 2H3PO4 Zn3(PO4)2 + 6H2O
F. Fe2O3 + 3H2 2Fe + 3H2O
11.1 Describing Chemical Reactions
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Starter S-107
1. Balance
C6H6 + O2 CO2 + H2O
CH3CH2OH + O2 CO2 + H2O
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11.2 Types of Chemical Reactions
Chapter 11
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11.2 Type of Chemical Reactions
You will need to know and predict the product for 6 types of chemical reactions
1. SynthesisForm
Example
11.2 Types of Chemical Reactions
Synthesis
ABBA
)(2)(2)(2 22 ggg OHOH
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11.2 Type of Chemical Reactions
2. DecompositionForm
Example
11.2 Types of Chemical Reactions
Decomposition
BAAB
)(2)(2)(2 22 ggyelectricit
g OHOH
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11.2 Type of Chemical Reactions
3. Single Replacement ReactionForm
Example
For metals, the reactions occurs if
the metal is more reactive than the
the one in the compound
11.2 Types of Chemical Reactions
Single
ACBBCA
)(23)()(23)( )()( aqsaqs NOZnCuNOCuZn
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11.2 Type of Chemical Reactions
4. Double Replacement ReactionForm
Example
11.2 Types of Chemical Reactions
Double
CBADCDAB
)(3)()(23)(2 2)( aqsaqaq NaNOCdSNOCdSNa
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11.2 Type of Chemical Reactions
5. Combustion ReactionForm
Example
11.2 Types of Chemical Reactions
Combustion
BOAOOAB 2
OHCOOHC ggl 2)(2)(2)(188 1816252
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11.2 Type of Chemical Reactions
6. Acid/Base Neutralization ReactionForm
Example
The substance AB is called a
Chemical Salt
11.2 Types of Chemical Reactions
Acid Base
OHABBOHHA 2
)(2)()()( laqaqaq OHNaClNaOHHCl
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11.2 Type of Chemical Reactions11.2 Types of Chemical Reactions
Reactions are predicted based on recognizing forms.
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Starter S-110
What type of reaction is this?
CaCl2 + Pb(NO3)2
Write the complete balanced equation
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11.2 Type of Chemical Reactions11.2 Types of Chemical Reactions
Reaction
AgNO3 + NaCl
Type:
Double Replacement
Products:
AgNO3 + NaCl AgCl + NaNO3
Balanced:
AgNO3 + NaCl AgCl + NaNO3
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11.2 Type of Chemical Reactions11.2 Types of Chemical Reactions
Reaction
Pb + AgNO3
Type:
Single Replacement
Products:
Pb + AgNO3 Ag + Pb(NO3)2
Balanced:
Pb + 2AgNO3 2Ag + Pb(NO3)2
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11.2 Type of Chemical Reactions11.2 Types of Chemical Reactions
Reaction
FeCl3 + KOH
Type:
Double Replacement
Products:
FeCl3 + KOH Fe(OH)3 + KCl
Balanced:
FeCl3 + 3KOH Fe(OH)3 + 3KCl
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11.2 Type of Chemical Reactions11.2 Types of Chemical Reactions
Reaction
NaOH + H2SO4
Type:
Acid Base Neutralization
Products:
NaOH + H2SO4 Na2SO4 + H2O
Balanced:
2NaOH + H2SO4 Na2SO4 + 2H2O
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11.2 Type of Chemical Reactions11.2 Types of Chemical Reactions
Reaction
C2H8 + O2
Type:
Combustion
Products:
C2H8 + O2 CO2 + H2O
Balanced:
C2H8 + 4O2 2CO2 + 4H2O
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11.2 Type of Chemical Reactions11.2 Types of Chemical Reactions
Reaction
NH3
Type:
Decomposition
Products:
NH3 N2 + H2
Balanced:
2NH3 N2 + 3H2
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11.2 Type of Chemical Reactions11.2 Types of Chemical Reactions
Reaction
Bi(NO3)3 + H2S
Type:
Double Replacement
Products:
Bi(NO3)3 + H2S Bi2S3 + HNO3
Balanced:
2Bi(NO3)3 + 3H2S Bi2S3 + 6HNO3
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Starter S-111
What type of reaction is
Fe + CuCl2
Write and balance the reaction
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11.3 Reactions in Aqueous Solutions
Chapter 11
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11.2 Type of Chemical Reactions
Many reactions take place in water – aqueous
For example, the reaction of Silver Nitrate and Sodium Chloride
But in a solution, most ionic compounds have dissociated to form ions
11.3 Reactions in Aqueous Solution
)(3)()()(3 aqsaqaq NaNOAgClNaClAgNO
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11.2 Type of Chemical Reactions
That is they are really in this form
This is called the Complete Ionic Equation
Notice – the solid is not broken into ions, only what is in solution
11.3 Reactions in Aqueous Solution
)(3)()()(3 aqsaqaq NaNOAgClNaClAgNO
)(3)()()()()(3)( aqaqsaqaqaqaq NONaAgClClNaNOAg
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11.2 Type of Chemical Reactions
Look carefully at the equation
There are Na+ and NO3- ions that stay the
same
These are called Spectator Ions
A Net Ionic Equation shows only ions that actually do something in a reaction
11.3 Reactions in Aqueous Solution
)(3)()()()()(3)( aqaqsaqaqaqaq NONaAgClClNaNOAg
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11.2 Type of Chemical Reactions
Net Ionic Equation
Try this one
11.3 Reactions in Aqueous Solution
)(3)()()()()(3)( aqaqsaqaqaqaq NONaAgClClNaNOAg )()()( saqaq AgClClAg
)(23)()(3)( )(22 aqsaqs NOPbAgAgNOPb )(32)()()(3)()( 2222 aqaqsaqaqs NOPbAgNOAgPb 2)()()()( 22 aqsaqs PbAgAgPb
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11.2 Type of Chemical Reactions
Practice
Equation
Compete Ionic Equations
Net Ionic Equation
11.3 Reactions in Aqueous Solution
)(4)()(3)(43 3 saqaqaq FePONaClFeClPONa
)(4)()()(3)(
3)(4)( 3333 saqaqaqaqaqaq FePOClNaClFePONa
)(43)(
3)(4 saqaq FePOFePO
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Starter S-112
Write the complete ionic and net ionic equations for
Fe(NO3)3(aq) + 3NaOH(aq) Fe(OH)3(s) + 3NaNO3(aq)
Complete IonicFe+3
(aq)+3NO3-(aq) + 3Na+
(aq)+3OH-(aq) Fe(OH)3(s)+ 3Na+
(aq)+3NO3-(aq)
Net Ionic
Fe+3(aq)+3OH-
(aq) Fe(OH)3(s)
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11.2 Type of Chemical Reactions
Precipitate – separates from a solution as a solid
Predicted using a solubility
chart
In the reaction
Is either product a solid?
11.3 Reactions in Aqueous Solution
3)()(3 NaNOAgClNaClAgNO aqaq
Chart
![Page 58: Starter S-105 1.How many grams of copper (II) chloride are in 3.83 x 10 21 formula units?](https://reader035.vdocuments.site/reader035/viewer/2022062719/56649ef15503460f94c02c76/html5/thumbnails/58.jpg)
11.2 Type of Chemical Reactions
AgCl – insoluble
NaNO3
11.3 Reactions in Aqueous Solution
3)()(3 NaNOAgClNaClAgNO aqaq
![Page 59: Starter S-105 1.How many grams of copper (II) chloride are in 3.83 x 10 21 formula units?](https://reader035.vdocuments.site/reader035/viewer/2022062719/56649ef15503460f94c02c76/html5/thumbnails/59.jpg)
11.2 Type of Chemical Reactions
AgCl – insoluble - solid
NaNO3
11.3 Reactions in Aqueous Solution
3)()(3 NaNOAgClNaClAgNO aqaq
![Page 60: Starter S-105 1.How many grams of copper (II) chloride are in 3.83 x 10 21 formula units?](https://reader035.vdocuments.site/reader035/viewer/2022062719/56649ef15503460f94c02c76/html5/thumbnails/60.jpg)
11.2 Type of Chemical Reactions
AgCl – insoluble - solid
NaNO3 – soluble
11.3 Reactions in Aqueous Solution
3)()(3 NaNOAgClNaClAgNO aqaq
![Page 61: Starter S-105 1.How many grams of copper (II) chloride are in 3.83 x 10 21 formula units?](https://reader035.vdocuments.site/reader035/viewer/2022062719/56649ef15503460f94c02c76/html5/thumbnails/61.jpg)
11.2 Type of Chemical Reactions
AgCl – insoluble - solid
NaNO3 – soluble - aqueous
11.3 Reactions in Aqueous Solution
3)()(3 NaNOAgClNaClAgNO aqaq