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Acids Lesson 3 Acid and Base Reactions - PowerPoint PPT Presentation


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Acids Lesson 3 Acid and Base Reactions. Conductivity The conductivity of an acid is determined by the number of ions generated in a solution and is therefore a combination of both the strength and concentration of the acid. 1.0 M HCl is a better conductor than 0.10 M HCl

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Acids Lesson 3 Acid and Base Reactions


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slide1

Acids

Lesson 3

Acid and Base

Reactions

slide2

Conductivity

The conductivity of an acid is determined by the number of ions generated in a solution and is therefore a combination of both the strength and concentration of the acid.

1.0 M HClis a better conductor than 0.10 M HCl

1.0 M HIis a better conductor than 1.0 M HF.

1.0 M HFhas the same conductivity as 0.02 M HCl.

slide3

Amphiprotic Chemical Species

Amphiproticchemical species can act asacidsand donate protonsor bases and accept protons. They are listed both on the left sideof the table as an acid and the right side as a base.

Acid, Base, orAmphiprotic

PO43-

slide4

Amphiprotic Chemical Species

Amphiproticchemical species can act asacidsand donate protonsor bases and accept protons. They are listed both on the left sideof the table as an acid and the right side as a base.

Acid, Base, orAmphiprotic

PO43-Base can gain H+, cannot lose H+

HPO42-

slide5

Amphiprotic Chemical Species

Amphiproticchemical species can act asacidsand donate protonsor bases and accept protons. They are listed both on the left sideof the table as an acid and the right side as a base.

Acid, Base, orAmphiprotic

PO43-Base can gain H+, cannot lose H+

HPO42- Amphiproticcan gain H+and lose H+

H2PO4-

slide6

Amphiprotic Chemical Species

Amphiproticchemical species can act asacidsand donate protonsor bases and accept protons. They are listed both on the left sideof the table as an acid and the right side as a base.

Acid, Base, orAmphiprotic

PO43-Base can gain H+, cannot lose H+

HPO42- Amphiproticcan gain H+and lose H+

H2PO4- Amphiproticcan gain H+and lose H+

H3PO4

slide7

Amphiprotic Chemical Species

Amphiproticchemical species can act asacidsand donate protonsor bases and accept protons. They are listed both on the left sideof the table as an acid and the right side as a base.

Acid, Base, orAmphiprotic

PO43-Base can gain H+, cannot lose H+

HPO42- Amphiproticcan gain H+and lose H+

H2PO4- Amphiproticcan gain H+and lose H+

H3PO4 Acid cannot gain H+, can lose H+

slide8

Amphiprotic Chemical Species

Amphiproticchemical species can act asacidsand donate protonsor bases and accept protons. They are listed both on the left sideof the table as an acid and the right sideas a base.

Acid, Base, orAmphiprotic

CO32-

slide9

Amphiprotic Chemical Species

Amphiproticchemical species can act asacidsand donate protonsor bases and accept protons. They are listed both on the left sideof the table as an acid and the right sideas a base.

Acid, Base, orAmphiprotic

CO32-Base

HCO3-

slide10

Amphiprotic Chemical Species

Amphiproticchemical species can act asacidsand donate protonsor bases and accept protons. They are listed both on the left sideof the table as an acid and the right sideas a base.

Acid, Base, orAmphiprotic

CO32-Base

HCO3- Amphiprotic

H2CO3

slide11

Amphiprotic Chemical Species

Amphiproticchemical species can act asacidsand donate protonsor bases and accept protons. They are listed both on the left sideof the table as an acid and the right sideas a base.

Acid, Base, orAmphiprotic

CO32-Base

HCO3- Amphiprotic

H2CO3 Acid

slide12

In Chemistry 11

H2SO4 + 2KOH

slide13

In Chemistry 11

H2SO4 + 2KOH K2SO4 + 2HOH(l)

slide14

In Chemistry 11

H2SO4 + 2KOH K2SO4 + 2HOH(l)

2H+ + SO42-

slide15

In Chemistry 11

H2SO4 + 2KOH K2SO4 + 2HOH(l)

2H+ + SO42- + 2K+ + 2OH- 

slide16

In Chemistry 11

H2SO4 + 2KOH K2SO4 + 2HOH(l)

2H+ + SO42- + 2K+ + 2OH- 2K+ + SO42- +

slide17

In Chemistry 11

H2SO4 + 2KOH K2SO4 + 2HOH(l)

2H+ + SO42- + 2K+ + 2OH- 2K+ + SO42- + 2HOH(l)

slide18

In Chemistry 11

H2SO4 + 2KOH K2SO4 + 2HOH(l)

2H+ + SO42- + 2K+ + 2OH- 2K+ + SO42- + 2HOH(l)

H+ + OH- HOH(l)

Use an arrow if you have a strong acid or a strong base!

Strong acids, strong bases, and soluble salts are ionized!

slide19

In Chemistry 12

H2C2O4 + 2KOH

slide20

In Chemistry 12

H2C2O4 + 2KOH

slide21

In Chemistry 12

H2C2O4 + 2KOH K2C2O4 + 2HOH(l)

slide22

In Chemistry 12

H2C2O4 + 2KOH K2C2O4 + 2HOH(l)

H2C2O4 + 2K+ + 2OH- 2K+ + C2O42- + 2HOH(l)

slide23

In Chemistry 12

H2C2O4 + 2KOH K2C2O4 + 2HOH(l)

H2C2O4 + 2K+ + 2OH- 2K+ + C2O42- + 2HOH(l)

H2C2O4 + 2OH- C2O42- + 2HOH(l)

The weak acid or base does not dissociate!

Break up strong acids, strong bases, and soluble salts!

slide24

Conductivity

Good Conductors Strong Acids Strong Bases Soluble Salts

HCl NaOH KCl

Weak Conductors Weak Acids Weak Bases Low Solubility Salts

HF Zn(OH)2 AgCl

Nonconductors Molecular covalent

C12H22O11

slide25

In Chemistry 12

HC2O4- + HCO3-

H+

C2O42- + H2CO3

Acid Base

Base Acid

Weakacidsand weak basesreact but do not go to completion (⇋)

The higher one on the acid side of the chart will be the acid and donate a proton.

Label all acids and bases- note H2C2O4 donates in the reverse reaction

The acid on the left HC2O4- is stronger than H2CO3 so the other side or the products are favoured.

H+

slide26

There are more products at equilibrium

slide27

Complete the reaction

HSO4- + HSO3-

H+

SO42- + H2SO3

Acid Base

Base Acid

ReactantsareFavouredbecauseH2SO3is a stronger acid than HSO4-

The stronger acid H2SO3more successfully donates its proton making more reactants.

H+