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chem > Chapter 12: Q.A. notes > Flashcards

Chapter 12: Q.A. notes Flashcards

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1
Q

carbonate ion

A

test: add dilute acid

test result: effervescence, carbon dioxide produced

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2
Q

chloride ion

A

test: acidify w/ dilute nitric acid, then add aqueous silver nitrate

test result: white ppt.

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3
Q

iodide ion

A

test: acidify w/ dilute nitric acid, then add aqueous silver nitrate

test result: yellow ppt.

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4
Q

nitrate ion

A

test: add aqueous sodium hydroxide, then aluminum foil ; warm carefully

test result: ammonia produced

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5
Q

sulfate ion

A

test: acidify w/ dilute nitric acid, then add aqueous barium nitrate

test result: white ppt.

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6
Q

aluminium ion

A

effect of aqueous sodium hydroxide: white ppt., soluble in excess giving a colourless solution

effect of aqueous ammonia:
white ppt., insoluble in excess

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7
Q

ammonium ion

A

effect of aqueous sodium hydroxide: ammonia produced on warming

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8
Q

calcium ion

A

effect of aqueous sodium hydroxide: white ppt., insoluble in excess

effect of aqueous ammonia:
no ppt.

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9
Q

copper(II) ion

A

effect of aqueous sodium hydroxide: light blue ppt., insoluble in excess

effect of aqueous ammonia:
light blue ppt., soluble in excess giving a dark blue solution

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10
Q

iron(II) ion

A

effect of aqueous sodium hydroxide: green ppt., insoluble in excess

effect of aqueous ammonia:
green ppt., insoluble in excess

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11
Q

iron(III) ion

A

effect of aqueous sodium hydroxide: red-brown ppt., insoluble in excess

effect of aqueous ammonia:
red-brown ppt., insoluble in excess

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12
Q

lead(II) ion

A

effect of aqueous sodium hydroxide: white ppt., soluble in excess giving a colourless solution

effect of aqueous ammonia:
white ppt., insoluble in excess

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13
Q

zinc ion

A

effect of aqueous sodium hydroxide: white ppt., soluble in excess giving a colourless solution

effect of aqueous ammonia:
white ppt., soluble in excess giving a colourless solution

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14
Q

ammonia gas

A

colourless & pungent

turns damp red litmus paper blue

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15
Q

carbon dioxide gas

A

colourless & odourless

gives white ppt. w/ limewater ( ppt. dissolved w/ excess CO₂ )

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16
Q

chlorine gas

A

yellow / green & pungent

bleaches damp litmus paper

17
Q

hydrogen gas

A

colourless & odourless

‘pops’ w/ a lighted splint

18
Q

oxygen gas

A

colourless & odourless

relights a glowing splint

19
Q

sulfur dioxide gas

A

colourless & pungent

turns aqueous acidified potassium manganate(VII) from purple to colourless

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