Acid Base Reaction Species Bio Sciences: pH 9/18/2015 1.
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Transcript of Acid Base Reaction Species Bio Sciences: pH 9/18/2015 1.
BellworkBellwork
Bromothymol blue turns ______ in an acid and ______in a base.
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Yellow
Blue
ObjectivesObjectives1. Write the generic format for an acid base reaction2. Identify the salt on the product side of an acid base reaction3. Write the definition of a conjugate acid or base4. Pick out the conjugate base and conjugate acid from and acid base reaction5. Match the acid/base and conjugated base/ acid pair when given an acid base reaction 04/19/23 Property of CTE Joint Venture 3
TerminologyTerminologySalt: In chemistry, salts are compounds that result from the neutralization reaction of an acid and a base. They are composed of what is left of the acid after it losses a proton (H+) and what is left of the base after is loses/ produces the hydroxide (OH-).
Conjugate Acid-Base Pair: Conjugate acid-base pairs are compounds that differ by the presence of one proton, or H+.
Conjugate Acid: What results when a base accepts a proton (H+), it becomes a conjugate acid because it now has a proton that it can donate
Conjugate Base: What results when an acid donates a proton (H+) it becomes a base, because it now has room to accept a proton.
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Acid Base Equation
HA + BOH ↔ BA + H2O
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The Acid Base Salt Water
The above is a generic example of and acid base neutralization reaction, which produces a salt and water.
What is a neutralization reaction?
We will learn what a salt is in a bit
Acid Base Recall
What is the acid in the reaction? What is the base? Use your notes/ vocab sheets from earlier in the unit if you need assistance, and write in lab book.
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1. HCl + NaOH ↔ NaCl + H2OAcid Base
2. KOH + HC2H3O2 ↔ KC2H3O2 + H2OAcidBase
Salts
With out going into a lot of detail, one of the products from a neutralization reaction is a salt – and no, it is not always NaCl. There are various types of acid base reactions, but we will just focus on those that always produce water and a salt
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HA + BOH ↔ BA + H2O
Salt
Salts
The definition of a salt in chemistry is: Compounds that result from the neutralization reaction of an acid and a base.Salts are composed of what is left of the acid after it losses a proton (H+) and what is left of the base after is loses/ produces the hydroxide (OH-).
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HA + BOH ↔ BA + H2O
Salt
Acid Base Reactions Salt
Right each reaction down and circle the salts.HClO + NaOH NaClO + H2O
H2SO4 + KOH KHSO4 + H2O
LiH5C8O7 + H2O H6C8O7 + LiOH *
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*hydrolysis reaction, but still look for salt
Conjugate Acids and BasesConjugate Acid: What results when a base accepts a proton (H+), it becomes a conjugate acid because it now has a proton that it can donate
Conjugate Base: What results when an acid donates a proton (H+) it becomes a base, because it now has room to accept a proton.
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B + HA ↔ BH+ + H-
Base Conjugate Acid
B + HA ↔ BH+ + H-
Acid Conjugate Base
Conjugate Acids and Bases A-B Partner Teach
Turn to a partner and tell them the two (2) most important things they have learned so far in regards to conjugate acids and bases, Specifically partner A: how to find the conjugate acid if given the base. Partner B: how to find the conjugate base if given the acid.
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Writing Conjugate Acids and Bases
Using your definition of a Bronsted Lowry Acid and Base and your definition of a conjugate acid or base fill in the correct solution to the blanks HCl + NH3 ____+ Cl-
HC2H3O2 + H2O ____ + H3O+
H2O + NH3 NH4 + + ____04/19/23 Property of CTE Joint Venture 12
NH4 +
C2H3O2-
OH-
Conjugate Acids and Base PairsRecalling your definitions of Bronsted Lowry acids and bases, together they therefore exist as conjugate pairs whose formulas are related by the gain or loss of a hydrogen ion.Conjugate Acid-Base Pair: Conjugate acid-base pairs are compounds that differ by the presence of one proton, or H+.
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Conjugate Acids and Base Pairs Practice
Using your Knowledge of conjugate acids and bases identify the conjugate acid base pairs in the following reactions ?
HCl + NH3 NH4 + + Cl-
HC2H3O2 + H2O C2H3O2- + H3O+
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Conjugate Acids and Base Pair
Conjugate Acids and Base Pair
Conjugate Acids and Base Pair
Conjugate Acids and Base Pair
ClosureClosure
Respond to ALL of the following prompts using at least one to relate to Conjugate Acids, Conjugate Bases, and Salts: a. I now understand..... b. I would like to know more about.... c. I need more help with.... d. I could teach someone else to....
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