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Chem > Acids and bases > Flashcards

Acids and bases Flashcards

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1
Q

What do acids react with

A

active metals
(single replacement)
produces H2 bubbles

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2
Q

do acids conduct electricity

A

yes

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3
Q

what do bases feel like

A

feel slippery

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4
Q

do bases conduct electricity

A

yes

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5
Q

acid arrenius definition

A

molecules that ionize in water to produce Hydrogen ions

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6
Q

Base arrenius definition

A

ionic metal hydroxides that dissociate in water to produce hydroxide ions

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7
Q

acid-base indicators

A

derived from plant pigmnents
- have predictable colours at different pH levels

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8
Q

each indicator has two forms:

A

Hln: acid form
ln: base form

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9
Q

AUTOIONIZATION OF WATER

A

H2O + H2O <-> H3O= + OH-

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10
Q

when hydronium concentration outweighs hydroxide concentration, the solution is

A

acidic

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11
Q

when hydroxide concentration outweighs the hydronium concentration, the solution is

A

basic

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12
Q

when hydronium and hydroxide ions are in balance the solution is

A

neutral

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13
Q

hydronium ion concentration against acid-neutral-basic locations

A

uses a curve of best fit, inverse relationship

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14
Q

pH

A

a negative logarithmic scale of the hydronium ion concentration of a solution
power of Hydrogen

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15
Q

what is a pH is near 0

A

strong and concentrated acid

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16
Q

what is a pH near <7

A

dilute and weak acid

17
Q

what is a pH of 7

A

neutral

18
Q

what is a pH near >7

A

diluted and weak base

19
Q

what is a pH near 14

A

concentrated and strong

20
Q

sig digs on log calculations

A

of sig digs of [H3O+] = decimal places for pH

21
Q

pH using [H3O+]

A

-log [H3O+]

22
Q

[H3O+] using ph

A

10^-pH

23
Q

pOH using [OH-]

A

-log [OH-]

24
Q

pH and pOH

A

pH + pOH = 14

25
Q

[OH-] using pOH

A

10^-pOH

26
Q

dilution concept

A

each successive 10x dilution of an acid results in an increase of pH by a factor of 1

Chem (12 decks)

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