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Chemistry > Acids, alkali and analysis > Flashcards

Acids, alkali and analysis Flashcards

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1
Q

If there is more H+ ions than OH- ions its an…

A

acid

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2
Q

If there is more OH- ions than H+ ions its an…

A

alkali

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3
Q

If there is equal number of OH- AND H+ ions then its…

A

neutral

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4
Q

What is the pH range of acids

A

1-6

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5
Q

What is the pH range of alkalis

A

8-14

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6
Q

What is a neutral pH

A

7

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7
Q

what colours can you get from an acid with universal indicator

A

red(strongest), orange, yellow(weakest)

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8
Q

What colours can you get from an alkali with universal indicator

A

Light blue/ blue(weakest)-light purple/dark purple(strongest)

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9
Q

What colour do you get from neutral with universal indicator

A

green

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10
Q

alkali example

A

sodium hydroxide, bleach, oven spray

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11
Q

neutral example

A

water

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12
Q

What is a salt

A

any metal compounds made from an acid

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13
Q

Indicator examples

A

universal indicator, phenolphalein, methyl orange

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14
Q

how can you neutralize an acid or alkali

A

titration

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15
Q

the stronger the acid the …… the number

A

lower

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16
Q

The stronger the alkali the ……. the number

A

higher

17
Q

why do solids not have a pH

A

they must be a liquid to measure pH

18
Q

How do you name a salt

A

First name from metal, second name from acid

19
Q

Can acids and alkali conduct electricity

A

yes

20
Q

titration equipment

A

pipette, burette, pipette filler

21
Q

example of bases

A

metal hydroxide, metal oxides, metal carbonate, ammonia solution

22
Q

what does a neutralization reaction always produce

A

salt + water (CO2 for carbonates)

23
Q

metal oxides become ……. when dissolved in water

A

alkalis

24
Q

non metal oxides become ……. when dissolved in water

A

acids

25
Q

when and acid or alkali is diluted its pH.…..

A

gets closer to 7

26
Q

separating techiques

A

filtration, evaporation, distilation

27
Q

method of separating solutes in solution

A

chromotography

28
Q

examples of chromatography

A

drug analysis, analyzing sugar in food, clothing anyalysing

29
Q

how close do titers need to be to use for averages

A

0.1cm3

30
Q

what is a precipitation

A

test for some negative ions

31
Q

method of testing pH of lakes, river ect.

A

pH probe, pH paper, universal indicator

32
Q

Qualitive analysis example

A

flame test, pH

33
Q

quantitive analysis example

A

titrations

34
Q

what titre do you never use for average

A

rough titre

35
Q

effects of acid rain

A

trees and animals can die

36
Q

what is qualitive analysis

A

analyzing whats in there-using own judgement

37
Q

effects of acid rain

A

trees and animals can die

38
Q

what does a flame test do

A

identify metal in salts

Chemistry (5 decks)

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