Review

Acids and Bases

Acids taste ______ and bases taste _______?

Sour, bitter

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A hydrogen atom attached to water molecule is known as a …..

Hydronium ion, H3O+

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Acids have a pH less than _____, and bases have a pH more than _______.

Seven

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Bases feel _____ when you touch them.

Soapy or slippery

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HF is called ________.

Hydrofluoric acid

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Strong acids and strong bases react to form a ______ and _____.

Salt, water

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Acid - Substances in water that increase the concentration of hydrogen ions (H+).

Arrhenius, Bronstad-Lowry, or Lewis definition?

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What is the Lewis definition of an acid and a base?

Acid - an electron pair acceptorBase - an electron pair donor

What is the Bronstad Lowry definition of an acid and a base?

Acid - neutral molecule, anion, or cation that donates a proton.Base - neutral molecule, anion, or cation that accepts a proton.

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HCl + H2O H3O+ + Cl-

Which species is the conjugate acid?

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H3O+

HCl + H2O H3O+ + Cl-

Which species is the base?

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H2O

What characterizes a strong acid or base?

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Complete ionization in water

HCl + H2O H3O+ + Cl-

Which species is the acid?

HCl

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Acids that can donate two or more protons are known as ____.

Polyprotic

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A salt is the ________ product of an acid and a base.

neutralization

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Kw = [H3O+] [OH-] = ???????

1.0 x10-14 M

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pH + ???? = 14

pOH

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Vinegar, acid or base? What is the chemical name for the active chemical in vinegar?

Acid, acetic acid

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Ammonia, acid or base? What is the chemical formula for ammonia?

Base, NH3

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What is the formula you would use when doing a titration calcualtion?

MAVAnA=MBVBnB

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In the titration formula, when do you use nA and nB?

When you have an acid with more than 1 acidic hydrogen or a base with more than 1

hydroxide

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If I have a [H+] concentration of 1 x 10-13, what is the pH?

13

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What is the pH of a solution if the [H3O+] is 3.4 x 10-5 M?

pH = -log [H3O+]= -log(3.4 x 10-5)

= 4.47

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Do you know the difference between monoprotic, diprotic, and triprotic?

Do you know the strong acids we talked about? HCl, HNO3, H2SO4

Do you know the weak acids we talked about? H3PO4, acetic acid