Analysis Of Anions And Cations

Question 1

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

Answer 1

Qualitative analysis

Question 2

True or False: Cations are positively charged ions.

Answer 2

True

Question 3

What is the charge of an anion?

Answer 3

Negatively charged

Question 4

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

Answer 4

Acid

Question 5

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

Answer 5

Lithium (Li+)

Question 6

What is the chemical formula for sulfate anion?

Answer 6

SO4^2-

Question 7

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

Answer 7

False

Question 8

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

Answer 8

Silver chloride (AgCl)

Question 9

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

Answer 9

Brown ring test

Question 10

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

Answer 10

Red

Question 11

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

Answer 11

Ammonium molybdate

Question 12

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

Answer 12

White precipitate of barium sulfate (BaSO4)

Question 13

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

Answer 13

Copper (Cu2+)

Question 14

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

Answer 14

True

Question 15

What is the chemical formula for the hydroxide anion?

Answer 15

OH-

Question 16

What happens when a carbonate reacts with an acid?

Answer 16

Carbon dioxide gas is produced.

Question 17

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

Answer 17

Chloride (Cl-)

Question 18

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

Answer 18

Sodium hydroxide

Question 19

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

Answer 19

Yellow

Question 20

What is the formula for the nitrate anion?

Answer 20

NO3-

Question 21

Which cation forms a green color in a flame test?

Answer 21

Boric acid (B3+)

Question 22

What test confirms the presence of iodide ions?

Answer 22

Formation of a yellow precipitate with lead(II) nitrate

Question 23

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

Answer 23

False

Question 24

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

Answer 24

Evolution of sulfur dioxide gas.

Question 25

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

Answer 25

Silver nitrate