Term
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Definition
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Term
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Definition
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Term
FLAME TEST
lithium/Strontium ion |
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Definition
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Term
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Definition
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Definition
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Term
HEATING TEST
gas produced = C02 |
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Definition
| Carbonate of metal other than group 1 |
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Term
HEATING TEST
gas produced = water vapour |
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Definition
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Term
HEATING TEST
gas produced = oxygen and nitrogen dioxide |
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Definition
| Nitrates (other than K or Na) |
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Term
HEATING TEST
gas produced = oxygen |
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Definition
| Nitrate of group 1 (other than Li) |
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Term
RECOGNITION AND IDENTIFICATION OF COMMON GASES
Gas = oxygen |
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Definition
colourless gas
relights glowing splint |
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Term
RECOGNITION AND IDENTIFICATION OF COMMON GASES
Gas = CO2 |
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Definition
colourless gas
white precipitate formed in lime water |
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Term
RECOGNITION AND IDENTIFICATION OF COMMON GASES
Gas = Ammonia |
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Definition
Colourless gas
Damp red litmus -> blue
White smoke formed with hydrogen chloride |
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Term
RECOGNITION AND IDENTIFICATION OF COMMON GASES
Gas = Nitrogen dioxide |
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Definition
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Term
RECOGNITION AND IDENTIFICATION OF COMMON GASES
Gas = Hydrogen |
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Definition
| Colourless gas ignites with a pop! |
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Term
RECOGNITION AND IDENTIFICATION OF COMMON GASES
Gas = Hydrogen Chloride |
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Definition
Steamy fumes with moist air
acidic
White smoke with ammonia |
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Term
RECOGNITION AND IDENTIFICATION OF COMMON GASES
Gas = Chlorine |
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Definition
Pale green gas
bleaches damp litmus paper |
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Term
RECOGNITION AND IDENTIFICATION OF COMMON GASES
Gas = Bromine |
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Definition
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Term
RECOGNITION AND IDENTIFICATION OF COMMON GASES
Gas = iodine |
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Definition
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Term
RECOGNITION AND IDENTIFICATION OF COMMON GASES
Gas = Steam (water) |
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Definition
| cobalt chloride paper pink |
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Term
ACTION OF DILUTE ACIDS (sulphuric acid and hydrochloric)
action of acid = CO2 evolved |
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Definition
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Term
ACTION OF DILUTE ACIDS (sulphuric acid and hydrochloric)
action of acid = hydrogen evolved |
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Definition
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Term
ACTION OF DILUTE ACIDS (sulphuric acid and hydrochloric)
action of acid = yellow solution turns orange |
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Definition
| chromate (VI) to dichromate (VI) |
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Term
ACTION OF DILUTE ACIDS (sulphuric acid and hydrochloric)
action of acid = sulfur dioxide evolved and pale yellow precipitate formed |
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Definition
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Term
TESTS FOR REDUCING AGENTS
What do reducing agents do? |
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Definition
decolourise aqueous acidified potassium manganate
turn aqueous acidified potassium dichromate from orange to green |
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Term
TESTS FOR REDUCING AGENTS
Reducing agents include: (3) |
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Definition
Iron (II) ions
Iodide ions
Hydrogen peroxide |
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Term
TESTS FOR OXIDISING AGENTS
What do oxidising agents do? |
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Definition
liberate iodine as a brown solution or black solid from aqueous potassium iodide
iodine solution gives blue-black colouring in starch |
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Term
TESTS FOR OXIDISING AGENTS
Oxidising agents include: (6) |
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Definition
acidified manganate ions
acidified dichromate ions
hydrogen peroxide
copper (II) ions
aqueous chlorine
aqueous bromine |
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Term
SODIUM HYDROXIDE SOLUTION
What is the test? |
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Definition
dilute sodium hydroxide solution added to solution containing metal ion
precipitate of the insoluble hydroxide will form |
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Term
SODIUM HYDROXIDE SOLUTION
white precipitate |
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Definition
| magnesium, barium, strontium, calcium |
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Term
SODIUM HYDROXIDE SOLUTION
no precipitate |
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Definition
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Term
SODIUM HYDROXIDE SOLUTION
no precipitate but ammonia evolved on warming |
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Definition
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Term
BARIUM CHLORIDE SOLUTION
What is the test? |
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Definition
aqueous barium chloride forms precipitates of insoluble barium slats with anions
usually tests for SO4^2-
aqueous barium chloride usually used with dilute HCl |
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Term
BARIUM CHLORIDE SOLUTION
anion = sulphate |
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Definition
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Term
BARIUM CHLORIDE SOLUTION
anion = sulphite |
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Definition
white
BaSo3
precipitate dissolves |
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Term
BARIUM CHLORIDE SOLUTION
anion = carbonate |
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Definition
white
BaCO3
preipitate dissolves with effervenscence |
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Term
SILVER NITRATE SOLUTION
What is the test? |
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Definition
Tests for halide ions
Anions that would interfere with the test are removed with dilute nitric acid before adding silver nitrate
Then aqueous ammonia both dilute and concentrated |
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Term
SILVER NITRATE SOLUTION
anion = chloride |
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Definition
white
AgCl
dilute - soluble |
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Term
SILVER NITRATE SOLUTION
anion = bromide |
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Definition
cream
AgBr
dilute - soluble in excess
concentrated - soluble |
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Term
SILVER NITRATE SOLUTION
anion = iodide |
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Definition
yellow
AgI
dilute - insoluble
concentrated - insoluble |
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Term
CONCENTRATED SULPHURIC ACID
What is the test? |
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Definition
few drops added to solid halide
POTENTIALLY HAZARDOUS
small scale and in fume cupboard |
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Term
CONCENTRATED SULPHURIC ACID
Halide = chloride |
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Definition
steamy fumes
vigorous reaction
HCl produced |
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Term
CONCENTRATED SULPHURIC ACID
halide = bromide |
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Definition
steamy fumes
brown vapour
vigorous
HBr produced |
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Term
CONCENTRATED SULPHURIC ACID
halide = iodide |
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Definition
steamy fumes
black solid
purple vapour
yellow solid
vigorous reaction |
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