Catalyst 6/6/13

Place Packet#14 in bin BEFORE you sit down and start the catalyst.

Announcements

Return Chemistry textbooks ASAP! A debt slip will be issued if you do not return your textbook. ($85 per book)

Benchmark Exam#4 next Wednesday and Thursday, May 29 and May 30

Agenda 6/6/13 Catalyst

Announcements Benchmark#4 TOMORROW Friday, June 7th (P4

Monday) Return Chemistry textbooks by next Friday! A debt

slip will be issued if you do not return your textbook. ($85 per book)

Acids/Bases

Guided Practice

BM#4 Review*

Objective 6/6/13

We will be able to

Define Arrhenius acid and base

Compare and contrast characteristics of acids and bases

Arrhenius Acid

An Arrhenius acid is a chemical compound that releases hydrogen ions (H+) as the only cation

Examples: HCl, HBr, HI, HF

Examples of Acids

HCl, hydrochloric acid CH3COOH, acetic acid

Properties of Acids

Sour taste

Change the color of acid-indicators (turns red)

Some acids react with metals and release hydrogen gas

Reacts with bases to produce salts and water

Conduct electric current

Arrhenius Acid

An Arrhenius acid is a chemical compound that releases hydrogen ions (H+) as the only cation

Examples: HCl, HBr, HI, HF

Examples of Acids

STRONG ACIDS

“strong acid” = completely dissociates into H+

HCl

HBr

H2SO4

H3PO4

WEAK ACIDS

“weak acid” = DOES NOT completely dissociates into H+

CH3COOH

HF

HCN

H2S

Arrhenius Base

An Arrhenius base is a chemical compound that releases hydroxide ions (-OH) as the only anion

Examples: KOH, Ba(OH)2, NaOH, LiOH, RbOH, Ca(OH)2

Properties of Bases

Bitter taste

Change the color of acid-base indicators (turns blue)

Dilute solutions feel slippery

Reacts with acids to produce salts and water

Conducts electric current

Real Life Examples of Bases

NaOH, sodium hydroxide NH4+, ammonia CaCO3, calcium

carbonate

Examples of Bases

STRONG BASES

“strong base” = completely dissociates into -OH

NaOH

KOH

LiOH

Ca(OH)2

WEAK BASES

“weak base” = DOES NOT completely dissociates into -OH

NH3

CH3NH2

C5H5N

Side note: There are actually three main types of acids

and bases. We’re only focusing on one type due to time…

Ionization Reactions

Class Check Point

Directions: On a piece of paper or Notability, answer the following independently. Ask a partner only if you are truly stuck.

Compare and contrast the properties of acids and bases.

Objective 6/6/13

We will be able to

Identify the parts of a neutralization reaction

Acid-Base Neutralization Reaction

When a strong acid and strong base react, your products will always produce a salt and water. A salt is an ionic compound made up of a cation and an anion.

Acid-Base Neutralization Reactions

In a neutralization reaction, strong acids dissociate to produce H+ and strong bases produce –OH. Proton and hydroxide react to produce water The other elements combine to form a salt

Example:HCl (aq) + NaOH (aq) NaCl (aq) + H2O (l)

HCl + NaOH NaCl + H2O

ClHNaO

H

+ Na+ Cl-

H HO

+

Identify the Acid, Base, and Salt in this Reaction!

H2CO3 + Sr(OH)2 Sr(HCO3)2 + 2H2O

Acid: ?

Base: ?

Salt: ?

Identify the Acid, Base, and Salt in this Reaction!

H2CO3 + Sr(OH)2 SrCO3 + 2H2O

Acid: H2CO3

Base: Sr(OH)2

Salt: SrCO3

Identify the Acid, Base, and Salt in this Reaction!

2HBr + Ba(OH)2 BaBr2 + 2H2O

Acid: ?

Base: ?

Salt: ?

Identify the Acid, Base, and Salt in this Reaction!

2HBr + Ba(OH)2 BaBr2 + 2H2O

Acid: HBr

Base: Ba(OH)2

Salt: BaBr2

Class Check Point

On a piece of paper or Notability, answer the following independently. Ask a partner only if you are truly stuck.

1. An acid is a _________ donor.

2. A base is a _________ donor.

3. Given the following neutralization reaction, identify the acid, base, and salt.

HClO4 + NaOH NaClO4 + H2O