Identification Of Cations Flashcards
What is a cation?
A cation is a positively charged ion.
True or False: Cations are formed by the loss of electrons.
True
Fill in the blank: The cation of sodium is _____ .
Na+
Which of the following is a common test for identifying cations: a) Flame test b) pH test c) Conductivity test?
a) Flame test
What color flame does lithium produce in a flame test?
Crimson red
What is the cation formula for calcium?
Ca2+
True or False: The ammonium ion is represented as NH4+.
True
Fill in the blank: The test for copper(II) ions involves adding _____ to the solution.
sodium hydroxide
What color precipitate forms when sodium hydroxide is added to a solution containing iron(III) ions?
Brown
Which cation produces a green flame in a flame test?
Boron
What is the cation formula for magnesium?
Mg2+
True or False: Barium cation produces a yellow flame in a flame test.
False
What is the appearance of the precipitate formed by lead(II) ions with potassium iodide?
Bright yellow
Which cation is indicated by a blue precipitate with sodium hydroxide?
Copper(II) ions
Fill in the blank: The cation of potassium is _____ .
K+
What gas is produced when ammonium ions react with sodium hydroxide?
Ammonia (NH3)
Which of the following cations gives a lilac flame: a) Sodium b) Potassium c) Calcium?
b) Potassium
What is the cation formula for aluminum?
Al3+
True or False: Zinc cations produce a white precipitate with sodium hydroxide.
True
What color flame does strontium produce in a flame test?
Crimson red
Fill in the blank: The cation of silver is _____ .
Ag+
What precipitate is formed when barium ions react with sulfate ions?
Barium sulfate (BaSO4)
Which cation is tested using the flame test method?
Various cations, including sodium, potassium, and lithium.
What is the cation formula for iron(II)?
Fe2+
True or False: Nickel(II) ions produce a green precipitate with sodium hydroxide.
True
Fill in the blank: Calcium ions react with _____ to form a white precipitate.
sodium sulfate
What is the common test for identifying barium ions?
Adding sulfuric acid to form a white precipitate of barium sulfate.
Which cation is indicated by a yellow precipitate with silver nitrate?
Chloride ions (Cl-)
What is the cation formula for chromium(III)?
Cr3+
True or False: Cations can be identified through solubility tests.
True
Fill in the blank: The cation of ammonium is _____ .
NH4+
What happens when a solution containing lead(II) ions is treated with potassium chromate?
A bright yellow precipitate of lead(II) chromate forms.
