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Chemistry > C8 acids, bases and salts > Flashcards

C8 acids, bases and salts Flashcards

1
Q

Result of flame test on potassium ions

A

Lilac flame

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2
Q

Define acids and bases in terms of proton transfer

A

acids and proton donors, bases are proton acceptorns.

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3
Q

Result of flame test on sodium ions

A

Yellow flame

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4
Q

Test for CO2 gas

A

Bubble the gas through lime water
It will turn cloudy if co2 is present

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5
Q

Test for hydrogen gas

A

Insert a burning splint into a test tube of gas. If H2O is present, a squeak pop sound will be heard

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6
Q

Test for oxygen gas

A

Insert a glowing splint into a test tube of gas. If oxygen is present, splint will relight

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7
Q

Test for sulfite ions

A

Potassium magnate should change fdom purple to colorless

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8
Q

What reactants can be used to form salt magnesium nitrate

A

Magnesium nitric acid

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9
Q

A method used ro produce sodium sulfate from sodium hydroxide and hcl

A

Titration

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10
Q

Test for carbonate ions

A

Add limewater to test tube. If the carbonate is there then it will turn cloudy

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11
Q

Flame test on copper ions

A

Blue-green flame

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12
Q

What color ppt is formed when silver nitrate is added to a chloride solution

A

White

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13
Q

What color ppt when silver nitrate is added to iodide solution

A

Yellow ppt

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14
Q

What color ppt is frmed when silver nitrate is added to bromide solution

A

Cream ppt

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15
Q

What color ppt is formed when sodium hydroxide reacts with calcium ions

A

White ppt

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16
Q

What color ppt forms when sodium hydroxide reacts with chromium ions

A

Green

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17
Q

What color ppt forms when sodium hydroxide reacts with iron(ll) ions?

A

Green

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18
Q

Flame test on lithium ions

A

Crimson

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19
Q

Products when acid reacts with a metal

A

Acid+metal>salt+hydrogen

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20
Q

Products when acid reacts with a metal hydroxide

A

Salt and water

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21
Q

What are the products when an acid reacts with a metal carbonate

A

Salt, water and hydrogen

22
Q

Observation when ammonia reacts with zinc ions

A

White ppt at first
Then redissolves in excess ammonia

23
Q

Observation when ammonia reacts with calcium ions

A

No observations

24
Q

Observations when ammonia reacts with aluminium ions

A

White ppt forms

25
What color ppt forms when sodium hydroxide recats with zinc ions
White ppt at first Then it dissolves to colorless
26
Ppt color when sodium hydroxide reacts with iron ions
Brown
27
Test for sulfur dioxide
Add potassium manganate, color will change from lilac to blue
28
Reactants of acids with a metal oxide
Salt and water
29
Name of salt formed from magnesium and sulfuric acid
Magnesium sulfate
30
What is an amphoteric oxide
Metal oxides that cab neutralise both bases and acud to form salt and water
31
Why is it important to control acidity in soil
Crops wont grow
32
What do bases produce in an aqueous solution
OH+ ions
33
How is Ph measured
Universal indicator
34
Difference between strong and weak base
Strong bases-completely ionised in aq solutions Weak bases- partially ionised in aq solutions
35
Test for ammonia gas
Amonnia gas will turn damp litmus paper blue
36
What color is blue litmus paper in acid and alkali
Acid : turns red Alkali : stays blue
37
What color is red litmus paper in acid and base
Base-turns red Acid-stays red
38
What color is methyl orange in acid and base
Acid - red Base - yellow
39
What color ppt forms when sodium hydroxide reacts with chromium ions
Green
40
Neutral oxide
Some non metallic oxides are neutral. They can't neutralise acids or bases
41
How is a basic oxide formed
When metal reacts with oxygen
42
Difference between strong and weak acid
Strong acids are completely ionised in aq solutions Weak acids are only partially ionised in aq solutions
43
Name of salt formed from zinc oxide and nitric acid
Zinc nitrate
44
What do acids produce in an aq solutions
H+ ions
45
How is an acidic oxide formed
When non metals react with oxygen
46
Test for chlorine gas
Damp liumus paper turns red before being bleached white
47
How is the reactivity of acidity and basic of a solution quantified
Using the pH scale
48
Name of salt formed from calcium carbonate and hydrochloric acid
Calcium chloride
49
What color ppt forms when sodium hydroxide reacts with copper ions
Blue
50
What color ppt forms when sodium hydroxide reacts with aluminium ions
White ppt first then into colourless

Chemistry (14 decks)

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