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Chem: Molecules Of Life > Chem Exam 1 Kahoot Practice > Flashcards

Chem Exam 1 Kahoot Practice Flashcards

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1
Q

What is the origin of acids?

A

Non-metal oxide + water

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2
Q

Which one of the following is a halogenic acid?

A

HF

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3
Q

Which of the following is considered diprotic?

A

H2SO3

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4
Q

When a dibasic base is mixed with water it makes

A

2 hydroxide ions

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5
Q

PH indicates ___ while POH indicates ___

A

Acidity, basicity

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6
Q

Calculate PH of 0.2M of H2SO4 solution

A

0.39

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7
Q

What is not true of bases

A

Donate protons

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8
Q

When rate of formation of products = rate of formation of reactants and reaction is…

A

In equilibrium

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9
Q

The equation for pH is

A

PH = pKA + log ([A-]/[HA])

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10
Q

If you have a solution with a pH of 8, what is the pOH?

A

6

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11
Q

pH = 7 ___, pH > 7 ___, pH < 7 ___

A

Neutral, basic, acidic

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12
Q

If an acid or base dissociates in water completely… (>95%)

A

It is strong

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13
Q

Which of the following are strong acids

A

HCl

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14
Q

Which of the following is true?

A

Stronger the acid -> weaker the conjugate base

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15
Q

Which is untrue of buffers?

A

Water is an example of a good buffer

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16
Q

What is untrue of water

A

It resists change in pH when acid or base is added

17
Q

Henderson Hasselbalch equation…

A

Indicates the pH of a buffer

18
Q

Which of the following is true when interpreting pKA…

A

A low value of pKA indicates a stronger weak acid

19
Q

Which is the weaker acid

A

PKA = 4.7 > pKA = 2.5

20
Q

An excellent buffer…

A

Has a pH that is close to that of the pKA of the weak acid

21
Q

Which is true of the open suffer system in the body

A

Low CO2 causes alkalosis

22
Q

Which is a physical property of a base

A

Slippery, bitter

23
Q

Which of the following is a neutralization reaction?

A

Metal hydroxide + acid = salt + water

24
Q

T/F: antacids contain bases to neutralize stomach acid

A

True

25
Q

What is the acid that is used in biomacromolecules for a buffer?

A

H3PO4

26
Q

How is a covalent bond made?

A

Non-metals + non-metals

27
Q

Which hormone helps regulate homeostasis?

A

Mineralcorticoid, insulin

28
Q

What solution do we give to patients suffering from dehydration?

A

Saline .89%

29
Q

What is the total concentration of solute particles in a solution?

A

Osmolarity

30
Q

Order strongest to weakest:
A) Ka of CH3COOH = 1.8 * 10^-5
B) Ka of H2CO3 = 6.5 * 10^-6
C) Ka of H3PO4 = 1.7 * 10^-3

A

C, A, B

31
Q

Where does the closed system buffer work?

A

In the cells

32
Q

Strong acid + weak base = ___ solution

A

Acidic

Chem: Molecules Of Life (6 decks)

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