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Chem LEC > LEC MOD 4 > Flashcards

LEC MOD 4 Flashcards

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1
Q

who proposed arrhenius acid and base?

A

Svante august arrhenius

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2
Q

components of arrhenius acid

A

hydrogen containing compound

produces hydrogen ions in aque sols

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3
Q

components of arrhenius base

A

hydroxide containing compound

produces hydroxide ions

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4
Q

who proposed bronsted lowry acid and base?

A

Johannes Nicolaus Bronsted

Thomas martin lowry

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5
Q

acid and base based on activity

A

BL acid and base

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6
Q

acid and base based from species produced

A

Arrhenius acid and base

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7
Q

species formed when a proton is added to a BL base; previous base

A

Conjugate acid

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8
Q

species that remains when a proton is removed from a BL acid; previous acid

A

Conjugate base

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9
Q

this substances can function either as BL acids or bases

A

Amphiprotic substances

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10
Q

supplies one proton per molecule during as acid base reaction

A

Monoprotic Acid

ex, HCl

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11
Q

supplies two protons per molecule during an acid-base reaction

A

Diprotic acid

Ex. H2CO3

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12
Q

supplies three protons per molecule during an acid-base reaction

A

Triprotic Acid

ex. H3PO4

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13
Q

characteristics of Acids

A 
taste sour
have pH lower than 7
affect indicators
react with active metals and produce H2
react with carbonates
neutralize bases
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14
Q

characteristics of bases

A 
taste bitter
hyave slippery feel
have pH higher than 7
affect indicators giving colors opposite to acids
neutralize acids
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15
Q

a scale of small numbers used to specify molar hydronium concentration in an aqueous solution

A

pH scale

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16
Q

defined as the negative logarithm of an aqueous solution’s molar hydronium ion concentration

A

pH

17
Q

formula for pH

A

-log(H3O=)

18
Q

formula for hydronium concentration

A

[H3O=] = 1.0 x 10^-pH

antilog(-pH)

19
Q

relationship of hydronium ion and pH level?

A

Inversely proportional

20
Q

relationship of hydroxide ions and pH level?

A

Directly proportional

21
Q

ionic compound which contains a metal or polyatomic ion + or; nonmetal or polyatomic ion -

A

Salt

22
Q

salts can be formed from a reaction between:

A

Acid + base= neutralization

Base + Non-metal oxide

23
Q

they prevent major changes in the pH of a solution

A

Buffer

24
Q

components of Buffer

A

weak acid and conjugate base

25
Q

buffer of blood

A

H2CO3 carbonic acid
HCO3 bicarbonate
buffer system

26
Q

standard pH level of blood

A

7.35-7.45.-

27
Q

what does pKa mean?

A

ionization constant of the weak acid

28
Q

henderson hasselbalch equation

A

pH= pKa + log[CB/WA]

29
Q

describes the relationship of pH and pKa

A

Henderson Hasselbalch equation

Chem LEC (8 decks)

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