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A Level Chemistry > Y12 Test Tube Tests - No Alcohols > Flashcards

Y12 Test Tube Tests - No Alcohols Flashcards

1
Q

what does sodium carbonate test for

A

acids

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2
Q

what is observed when sodium carbonate is added to an acid

A

Effervescence (CO2 has is released)

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3
Q

what is the simple ionic equation for the reaction between sodium carbonate (Na2Co
O3) and any acids

A

CO3 2- + H+ –> CO2 + H2O

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4
Q

what reagent is used to test for ammonium ions

A

NaOH

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5
Q

what is observed when ammonium (NH4+) ions are heated with NaOH

A

gas released turns damp red litmus paper blue

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6
Q

what gas is released when ammonium ions are warmed with NaOH

A

ammonia has (NH3)

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7
Q

what is the test for sulfate ions (SO4 2-)

A

acidified Barium Chloride

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8
Q

what is observed when sulfuric acid is added to BaCl

A

White Precipitate (BaSO4)

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9
Q

what is the ionic equation for the reaction of Na2SO4 with BaCl2

A

Ba2+(aq) + SO4 2- (aq) –> BaSO4(S)

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10
Q

how do you test for Magnesium ions

A

Add NaOH this forms Mg(OH)2 which is a white precipitate

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11
Q

what would you expect to see wen sodium carbonate is added to HCl

A

effervescence

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12
Q

what would you expect to see when barium carbonate (BaCO3) is added to sulfuric acid (H2SO4)

A

effervescence and white precipitate

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13
Q

what is the ionic equation for the reaction between ammonium bromide (NH4Br) and sodium hydroxide (NaOH)

A

NH4 + OH- –> NH3 + H2O

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14
Q

What is observed when this reaction occurs
Ag+ (aq) + F- (aq) –> AgF(aq)

A

colourless solution

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15
Q

what is observed when this reaction occurs
Ag+ (aq) + Br- (aq) –> AgBr(aq)

A

Cream precipitate

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16
Q

what is observed when this reaction occurs
Ag+ (aq) + I- (aq) –> AgI(aq)

A

yellow precipitate

17
Q

what is the test for halide ions

A

Acidified silver nitrate (AgNO3)

18
Q

what is observed when dilute ammonia (NH3) is added t AgCl

A

white precipitate dissolves

19
Q

what is observed when dilute ammonia (NH3) is added to AgBr

A

Cream precipitate remains

20
Q

what is observed when concentrated ammonia (NH3) is added to AgI

A

Yellow precipitate remains

21
Q

what is the equation for the reaction between AgCl and dilute NH3(aq)

A

AgCl + 2NH3 –> Ag(NH3)2+ + Cl-

22
Q

what is the equation for the reaction between AgBr and Concentrated NH3(aq)

A

AgBr + 2NH3 –> Ag(NH3)2+ + Br-

23
Q

wat is the simplest ionic equation for the reaction when ammonium nitrate (NH4NO3) is heated with sodium hydroxide (NaOH)

A

NH4+ + OH- –> NH3 + H2O

A Level Chemistry (12 decks)

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