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Chemistry O Level Revision > Analysis Of Anions And Cations > Flashcards

Analysis Of Anions And Cations Flashcards

1
Q

What is the process of identifying anions and cations in a solution called?

A

Qualitative analysis

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2
Q

True or False: Cations are positively charged ions.

A

True

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3
Q

What is the charge of an anion?

A

Negatively charged

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4
Q

Fill in the blank: The common test for the presence of carbonates involves adding _____ to the sample.

A

Acid

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5
Q

Which cation is tested using the flame test that produces a crimson red flame?

A

Lithium (Li+)

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6
Q

What is the chemical formula for sulfate anion?

A

SO4^2-

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7
Q

True or False: Barium ions can be identified by a yellow precipitate when mixed with sulfate.

A

False

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8
Q

What is the common precipitate formed when silver nitrate is added to a chloride solution?

A

Silver chloride (AgCl)

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9
Q

Which test can be used to confirm the presence of nitrate ions?

A

Brown ring test

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10
Q

What color does litmus paper turn in the presence of acidic anions?

A

Red

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11
Q

Fill in the blank: The test for phosphate ions involves the addition of _____ solution.

A

Ammonium molybdate

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12
Q

What is the result of the test for sulfate ions using barium chloride?

A

White precipitate of barium sulfate (BaSO4)

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13
Q

Which cation is identified by the characteristic blue color in solution?

A

Copper (Cu2+)

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14
Q

True or False: Anions can be identified using specific color reactions.

A

True

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15
Q

What is the chemical formula for the hydroxide anion?

A

OH-

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16
Q

What happens when a carbonate reacts with an acid?

A

Carbon dioxide gas is produced.

17
Q

Which anion is detected by the formation of a white precipitate on adding silver nitrate?

A

Chloride (Cl-)

18
Q

Fill in the blank: The presence of ammonium ions can be confirmed by adding _____ and heating.

A

Sodium hydroxide

19
Q

What is the characteristic color of a flame test for sodium ions?

A

Yellow

20
Q

What is the formula for the nitrate anion?

A

NO3-

21
Q

Which cation forms a green color in a flame test?

A

Boric acid (B3+)

22
Q

What test confirms the presence of iodide ions?

A

Formation of a yellow precipitate with lead(II) nitrate

23
Q

True or False: All cations can be detected by flame tests.

A

False

24
Q

What is the result of adding dilute hydrochloric acid to a solution containing sulfites?

A

Evolution of sulfur dioxide gas.

25
Q

Fill in the blank: The _____ test is used for detecting halide ions.

A

Silver nitrate

Chemistry O Level Revision (4 decks)

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