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Chemistry > Acids, Bases and Salts > Flashcards

Acids, Bases and Salts Flashcards

1
Q

Acid + Metal

A

Salt + H2

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2
Q

Base + Metal

A

Salt + H2

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3
Q

Acid + metalHCO3

A

Salt + CO2 + H2O

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4
Q

Acid + metalCO3

A

Salt + CO2 + H2O

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5
Q

Base + Acid

A

Salt + Water

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6
Q

Metal Oxide + Acid

A

Salt + Water

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7
Q

Non-metal oxide + base

A

Salt + Water

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8
Q

Acids and bases: taste

A

A: sour, lemon
B: bitter, soap/baking soda

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9
Q

Why does a stain of curry turn reddish brown when soap touches it

A

Curry contains turmeric which is a natural indicator
Soap is basic

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10
Q

Litmus is extracted from? Original colour

A

lichen, purple

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11
Q

Natural indicators examples

A

Turmeric, red cabbage leaves, petals of petunia

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12
Q

Acetic acid

A

CH3COOH

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13
Q

Phenolphthalein

A

A: no change (colourless)
B: pink

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14
Q

Methyl Orange Solution

A

A: red
B: yellow

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15
Q

Olfactory indicators

A

Onion, clove oil, vanilla: loses smell w base

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16
Q

Sodium Hydroxide and zinc

A

2NaOH + Zn&raquo_space; H2 + Na2ZnO2 (sodium zincate)

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17
Q

Sodium Carbonate and Hydrochloric acid

A

Na2CO3 + 2HCl&raquo_space; CO2 + H2O + 2NaCl

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18
Q

Sodium bicarbonate and hydrochloric acid

A

NaHCO3 + HCL&raquo_space; H2O + CO2 + NaCl

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19
Q

Calcium carbonate + water + carbon dioxide

A

CaCO3 + H2O + CO2&raquo_space; Ca(HCO3)2

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20
Q

Different forms of CaCO3

A

limestrone, marble, chalk

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21
Q

Sodium Hydroxide and hydrochloric acid

A

NaOH + HCl&raquo_space; H2O + NaCl

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22
Q

Copper oxide and HCl observations

A

blue-green solution is formed (CuCl2)

CuO + 2HCl&raquo_space; CuCl2 + H2O

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23
Q

Metallic oxides and non metallic oxides

A

basic (CuO)
Acidic (CO2)

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24
Q

what do all acids and bases have in common

A

Both acid and base conduct electricity as they produce H + and OH - ions respectively. Thus, both acid and base acts as an electrolyte.

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25
Hydronium ion
H3O+ H2O + H+
26
Formic Acid Acetic Acid Phosphoric Acid
HCOOH CH3COOH H3PO4
27
Weak/strong: H2SO3 name
Weak Sulfurous
28
Weak/strong:HNO2
Weak nitrous
29
Weak/strong:H3PO4
Phosphoric acid weak
30
Weak/strong:CH3COOH. HCOOH
weak acetic formic
31
Weak/strong:HNO3
nitric strongs
32
Weak/strong:HCl
strong
33
Weak/strong:NH3
weak base
34
Weak/strong:NaOH
strong base
35
Weak/strong:H2CO3
weak acid
36
Weak/strong:Ca(OH)2
strong base
37
Weak/strong:KOH
Strong base
38
Mg(NO3)2 a/b?
acidic
39
NaCl
neutral
40
CaCO3 a/b? salt
basic
41
KNO3
neutral
42
CH3COONa
basic
43
Our body works within pH range ___ acid rain pH
7.0-7.8 <5.6
44
Antacids
Milk of Magnesia (Mg(OH)2) remedy indigestion
45
Tooth decay pH
<5.5
46
Bee sting remedy Nettle leaves/ant inject__ sour milk acid lemon/orange acid vinegar tamarind tomato
mild base like baking soda (sodium bicarbonate) methanoic acid lactic citric acetic tartaric oxaltic
47
Bleaching Powder
48
Brine electrolysis equation
2NaCl + 2H2O >> 2NaOH + Cl2 + H2
49
which electrodes are NaOHH2 and Cl2 produced in
H2: Cathode Cl2: anode NaOH: near cathode
50
H2 use
Fuels, ammonia for fertilizers, margarine
51
Cl2 use
CFCs, Swimming pools, water treatment
52
NaOH use
de-greasing metals, soaps and detergents, paper making
53
Bleaching powder formation colour
CaOCl2 slaked lime and chlorine: Ca(OH)2 + Cl2 >> H2O + CaOCl2 yellowish white
54
Bleaching poweder use
kill germs in water bleaching paper/textiles/wood oxidising agent in industries
55
Baking Soda formation
NaHCO3 NaCl + NH3 + H2O + CO2 >> NaHCO3 + NH4Cl ammonium chloride sodium bicarbonate
56
Baking soda use
Baking powder: NaHCO3 + H+ >> CO2 + H2O + salt antacid ingredient soda acid fire extinguishers
57
Heating baking soda
2NaHCO3 >>heat>> Na2CO3 + H2O + CO2
58
Washing soda formation
recrystallisation of sodium carbonate Na2CO3 + 10H2O >> Na2CO3.10H2O
59
washing soda use
glass,soap paper cleaning agent permanent hardness of water borax, sodium compounds
60
CuSO4 after heating eqn + obs
blue > white CuSO4.5H2O >> CuSO4 + 5H2O
61
Plaster of paris formation
CaSO4.2H2O >>heat>> CaSO4.1/2H2O gypsum
62
POP use
making toys decoration supporting fractured bones
63
Marble + acid rain
CaCO3 + H2SO4 >> CaSO4 + H2O + CO2 sulphuric acid

Chemistry (5 decks)

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