Curriculum
Login

Curriculum

Chemistry

Chapter 1 - Transition Elements and Iron Metallurgy

0/28

Chapter 2 - Chemical Analysis

0/22

Chapter 3 - Chemical Equilibrium

0/22

Chapter 4 - Electrochemistry

0/33

Chapter 5 - Organic Chemistry

0/72

More lessons

0/23
Quiz

Lesson 1 Quiz: Qualitative Analysis of Acidic Radicals (Anions)

Submit quiz
Once you submit, you will no longer be able to change your answers. Are you sure you want to submit the quiz?
Cancel Submit
  • Questions count: 20
Start Quiz
1.
STEM Analytical Chemistry Problem 28: When dilute hydrochloric acid (HCl) is added to a solid unknown salt, a colorless gas evolves that turns paper moistened with acidified potassium dichromate from orange to green. What is the anion?
Sulfite anion (SO32−) producing sulfur dioxide gas (SO2)
Sulfide anion (S2−) producing H2S
Thiosulfate anion producing SO2 and yellow sulfur precipitate
Carbonate anion (CO32−) producing CO2
2.
STEM Analytical Chemistry Problem 19: When dilute hydrochloric acid (HCl) is added to a solid unknown salt, a colorless gas evolves that turns paper moistened with acidified potassium dichromate from orange to green. What is the anion?
Carbonate anion (CO32−) producing CO2
Sulfite anion (SO32−) producing sulfur dioxide gas (SO2)
Thiosulfate anion producing SO2 and yellow sulfur precipitate
Sulfide anion (S2−) producing H2S
3.
STEM Analytical Chemistry Problem 41: When dilute hydrochloric acid (HCl) is added to a solid unknown salt, a colorless gas evolves that turns paper moistened with acidified potassium dichromate from orange to green. What is the anion?
Sulfide anion (S2−) producing H2S
Thiosulfate anion producing SO2 and yellow sulfur precipitate
Sulfite anion (SO32−) producing sulfur dioxide gas (SO2)
Carbonate anion (CO32−) producing CO2
4.
Which reagent can effectively differentiate between a solid sample of sodium sulfate and sodium phosphate?
Barium chloride solution followed by dilute hydrochloric acid
Concentrated sulfuric acid
Lead acetate solution
Potassium permanganate
5.
STEM Analytical Chemistry Problem 14: When dilute hydrochloric acid (HCl) is added to a solid unknown salt, a colorless gas evolves that turns paper moistened with acidified potassium dichromate from orange to green. What is the anion?
Thiosulfate anion producing SO2 and yellow sulfur precipitate
Sulfite anion (SO32−) producing sulfur dioxide gas (SO2)
Carbonate anion (CO32−) producing CO2
Sulfide anion (S2−) producing H2S
6.
STEM Analytical Chemistry Problem 12: When dilute hydrochloric acid (HCl) is added to a solid unknown salt, a colorless gas evolves that turns paper moistened with acidified potassium dichromate from orange to green. What is the anion?
Carbonate anion (CO32−) producing CO2
Thiosulfate anion producing SO2 and yellow sulfur precipitate
Sulfite anion (SO32−) producing sulfur dioxide gas (SO2)
Sulfide anion (S2−) producing H2S
7.
STEM Analytical Chemistry Problem 16: When dilute hydrochloric acid (HCl) is added to a solid unknown salt, a colorless gas evolves that turns paper moistened with acidified potassium dichromate from orange to green. What is the anion?
Sulfide anion (S2−) producing H2S
Carbonate anion (CO32−) producing CO2
Sulfite anion (SO32−) producing sulfur dioxide gas (SO2)
Thiosulfate anion producing SO2 and yellow sulfur precipitate
8.
STEM Analytical Chemistry Problem 34: When dilute hydrochloric acid (HCl) is added to a solid unknown salt, a colorless gas evolves that turns paper moistened with acidified potassium dichromate from orange to green. What is the anion?
Sulfite anion (SO32−) producing sulfur dioxide gas (SO2)
Sulfide anion (S2−) producing H2S
Carbonate anion (CO32−) producing CO2
Thiosulfate anion producing SO2 and yellow sulfur precipitate
9.
STEM Analytical Chemistry Problem 23: When dilute hydrochloric acid (HCl) is added to a solid unknown salt, a colorless gas evolves that turns paper moistened with acidified potassium dichromate from orange to green. What is the anion?
Carbonate anion (CO32−) producing CO2
Thiosulfate anion producing SO2 and yellow sulfur precipitate
Sulfide anion (S2−) producing H2S
Sulfite anion (SO32−) producing sulfur dioxide gas (SO2)
10.
STEM Analytical Chemistry Problem 17: When dilute hydrochloric acid (HCl) is added to a solid unknown salt, a colorless gas evolves that turns paper moistened with acidified potassium dichromate from orange to green. What is the anion?
Carbonate anion (CO32−) producing CO2
Sulfite anion (SO32−) producing sulfur dioxide gas (SO2)
Thiosulfate anion producing SO2 and yellow sulfur precipitate
Sulfide anion (S2−) producing H2S
11.
STEM Analytical Chemistry Problem 6: When dilute hydrochloric acid (HCl) is added to a solid unknown salt, a colorless gas evolves that turns paper moistened with acidified potassium dichromate from orange to green. What is the anion?
Sulfide anion (S2−) producing H2S
Thiosulfate anion producing SO2 and yellow sulfur precipitate
Carbonate anion (CO32−) producing CO2
Sulfite anion (SO32−) producing sulfur dioxide gas (SO2)
12.
STEM Analytical Chemistry Problem 26: When dilute hydrochloric acid (HCl) is added to a solid unknown salt, a colorless gas evolves that turns paper moistened with acidified potassium dichromate from orange to green. What is the anion?
Carbonate anion (CO32−) producing CO2
Thiosulfate anion producing SO2 and yellow sulfur precipitate
Sulfite anion (SO32−) producing sulfur dioxide gas (SO2)
Sulfide anion (S2−) producing H2S
13.
STEM Analytical Chemistry Problem 10: When dilute hydrochloric acid (HCl) is added to a solid unknown salt, a colorless gas evolves that turns paper moistened with acidified potassium dichromate from orange to green. What is the anion?
Carbonate anion (CO32−) producing CO2
Thiosulfate anion producing SO2 and yellow sulfur precipitate
Sulfide anion (S2−) producing H2S
Sulfite anion (SO32−) producing sulfur dioxide gas (SO2)
14.
STEM Analytical Chemistry Problem 37: When dilute hydrochloric acid (HCl) is added to a solid unknown salt, a colorless gas evolves that turns paper moistened with acidified potassium dichromate from orange to green. What is the anion?
Carbonate anion (CO32−) producing CO2
Sulfide anion (S2−) producing H2S
Thiosulfate anion producing SO2 and yellow sulfur precipitate
Sulfite anion (SO32−) producing sulfur dioxide gas (SO2)
15.
STEM Analytical Chemistry Problem 36: When dilute hydrochloric acid (HCl) is added to a solid unknown salt, a colorless gas evolves that turns paper moistened with acidified potassium dichromate from orange to green. What is the anion?
Thiosulfate anion producing SO2 and yellow sulfur precipitate
Sulfite anion (SO32−) producing sulfur dioxide gas (SO2)
Carbonate anion (CO32−) producing CO2
Sulfide anion (S2−) producing H2S
16.
STEM Analytical Chemistry Problem 30: When dilute hydrochloric acid (HCl) is added to a solid unknown salt, a colorless gas evolves that turns paper moistened with acidified potassium dichromate from orange to green. What is the anion?
Carbonate anion (CO32−) producing CO2
Sulfite anion (SO32−) producing sulfur dioxide gas (SO2)
Thiosulfate anion producing SO2 and yellow sulfur precipitate
Sulfide anion (S2−) producing H2S
17.
STEM Analytical Chemistry Problem 3: When dilute hydrochloric acid (HCl) is added to a solid unknown salt, a colorless gas evolves that turns paper moistened with acidified potassium dichromate from orange to green. What is the anion?
Sulfite anion (SO32−) producing sulfur dioxide gas (SO2)
Carbonate anion (CO32−) producing CO2
Sulfide anion (S2−) producing H2S
Thiosulfate anion producing SO2 and yellow sulfur precipitate
18.
STEM Analytical Chemistry Problem 44: When dilute hydrochloric acid (HCl) is added to a solid unknown salt, a colorless gas evolves that turns paper moistened with acidified potassium dichromate from orange to green. What is the anion?
Carbonate anion (CO32−) producing CO2
Thiosulfate anion producing SO2 and yellow sulfur precipitate
Sulfide anion (S2−) producing H2S
Sulfite anion (SO32−) producing sulfur dioxide gas (SO2)
19.
STEM Analytical Chemistry Problem 2: When dilute hydrochloric acid (HCl) is added to a solid unknown salt, a colorless gas evolves that turns paper moistened with acidified potassium dichromate from orange to green. What is the anion?
Sulfide anion (S2−) producing H2S
Thiosulfate anion producing SO2 and yellow sulfur precipitate
Sulfite anion (SO32−) producing sulfur dioxide gas (SO2)
Carbonate anion (CO32−) producing CO2
20.
STEM Analytical Chemistry Problem 40: When dilute hydrochloric acid (HCl) is added to a solid unknown salt, a colorless gas evolves that turns paper moistened with acidified potassium dichromate from orange to green. What is the anion?
Sulfite anion (SO32−) producing sulfur dioxide gas (SO2)
Thiosulfate anion producing SO2 and yellow sulfur precipitate
Sulfide anion (S2−) producing H2S
Carbonate anion (CO32−) producing CO2
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20