Ch 2 Flashcards by parori beig

Strong acids

Hcl
H2so4

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Weak acids

Hno3 (nitric acid)
CH3cooH (acetic acid)

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Strong bases

Naoh
Koh

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Weak bases

Caoh2
Mgoh2
Nh4oh(ammonium) hydroxide

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Red cabbage in acid and base

Base-red
Acid-green

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Hydrangea

Acid - blue
Base - pink

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Methyl orange

Acid - red
Base- yellow

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Phenophthalein

Acid - colourless
Base- pink

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Acid + metals

Salt +h2

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Zn + naoh

Na2 zno2 + h2
(Sodium
Zincate)

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Metal carbonates and hc

Salt + h2o + co2

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Na2co3 + hcl

Nacl + h2o + co2

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Nahco3 + hcl

Nacl + h2o +co2

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Caoh(lime water) + co2

Caco3 + h2o

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Caco3 + h2o+ co2

Ca(hco3)2

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Cuo colour

Black

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Cuo + hcl

Cucl2 +h20
(Blue- green)

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Humid temp and passing of hcl

Calcium chloride

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Hydrogen ions exis in

-H+
-H3o ( hydronium ion)

H+ + OH-

H2o

Acid rain

Ph<5.6

Body works in ph

(7-7.8)

Ph in soil of backyard

5-7

To neutralize acidic medium in stomach

Magnesium hydroxide (milk of magnesia)

Tooth decay occurs in

< 5.5

Neetle leaves sting sol

Dock plant

Acid in tamarind

Tartaric

Tomato acid

Oxalic

Curd

Lactic acid

Ant , neetle sting

Methanoic acid

Common salt

Nacl NaOH + HCl = Nacl + H2o

Caustic soda

-Sodium hydroxide (NaOh) -by chlor alkali process -h2 from cathode -cl2 from Anode NaCl+ H2o = NaOH + Cl2 + H2

Uses of naOH

Grese Soaps and detergents Paper making Artificial fibres

Cl2 uses

Water treatment Disinfection Pesticide Swimming pools

H2 uses

Fuels Margarine Ammonia for fertilisers

Bleaching powder

Caocl2 Caoh2 + co2= caocl2 + h2o (Slaked lime)

Uses of bleaching powder

Bleaching clothes Bleaching wood pulp in paper industry Oxidising agent Germ free water

Baking soda

Nahco3 Nacl+h2o+co2+nh3 =nh4cl +nahco3 (Ammonium chloride) Sodium hydrogen carbonate

On heating nahco3

Na2co3 + h2o + co2 (Sodium carbonate)

Washing soda

Sodium carbonate decahydrate Na2co3.10h2o Recrystallising na2co3 produced on heating nahco3

Washing soda uses

Industry Glass soap paper industry Munufacture borax Cleaning agent Remove permanent hardness

Plaster of paris

Calcium sulphate hemihydrate Caso4.1/2 h2o On heating gypsum at 373k Gypsum= caso4.2h2o

Uses of pop

Doctor for fractured bones Building monuments Toys Decoration To smoothen surfaces