Introduction to Qualitative Analysis of Anions Quiz

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What type of tests are performed to confirm the presence or absence of anions in the analysis?

Titration tests and precipitation tests

Color tests and pH testing

Elimination tests and spot testing (correct)

Boiling tests and fusion tests

Why are spot tests directly made for most anions?

Anions are highly reactive

Anions are sufficiently different from each other (correct)

Most anions are similar to each other

Anions do not react with spot test reagents

What is the primary purpose of the dry heating test in identifying anions?

To confirm the presence of metallic ions

To provide important information about the acid radical present (correct)

To eliminate cations from the solution

To precipitate cations as oxides

Why are anions tested individually rather than by a systematic method according to the text?

Better results are achieved by individual testing Signup and view all the answers

What must be done before preparing a solution with sodium carbonate according to the text?

Test for hydroxides and carbonates Signup and view all the answers

Why do we first remove all traces of metallic ions except Na, K, and NH4 before further testing?

To avoid interference with anion analysis Signup and view all the answers

What is the primary purpose of anion analysis?

To determine the presence of negatively charged particles in a given sample Signup and view all the answers

Which of the following is NOT an example of a monatomic anion?

Nitrate (NO₃⁻) Signup and view all the answers

What is the general scheme used to divide anions into groups during anion analysis?

Based on whether they give a gas or volatile product with HCl, their solubility with silver, barium, and calcium salts, and whether they are reducing or oxidizing agents Signup and view all the answers

What is the purpose of performing a dry heating test during anion analysis?

To observe the evolution of gases or volatile products upon heating Signup and view all the answers

Which of the following preliminary tests is NOT typically performed before anion analysis?

Flame test Signup and view all the answers

Which of the following anions is classified as a halogen?

Chloride (Cl⁻) Signup and view all the answers

Which group of anions will give volatile products or precipitate with HCl?

Group A Signup and view all the answers

Which anion forms an insoluble product with CaCl2 in HAc?

C2O4 Signup and view all the answers

Which of the following anions will give a precipitate with BaCl2 in Ammonium Hydroxide?

PO4 Signup and view all the answers

Introduction to Qualitative Analysis of Anions Quiz

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Questions and Answers

What type of tests are performed to confirm the presence or absence of anions in the analysis?

Why are spot tests directly made for most anions?

What is the primary purpose of the dry heating test in identifying anions?

Why are anions tested individually rather than by a systematic method according to the text?

What must be done before preparing a solution with sodium carbonate according to the text?

Why do we first remove all traces of metallic ions except Na, K, and NH4 before further testing?

What is the primary purpose of anion analysis?

Which of the following is NOT an example of a monatomic anion?

What is the general scheme used to divide anions into groups during anion analysis?

What is the purpose of performing a dry heating test during anion analysis?

Which of the following preliminary tests is NOT typically performed before anion analysis?

Which of the following anions is classified as a halogen?

Which group of anions will give volatile products or precipitate with HCl?

Which anion forms an insoluble product with CaCl2 in HAc?

Which of the following anions will give a precipitate with BaCl2 in Ammonium Hydroxide?

What is the group of anions that form insoluble products with AgNO3 in Nitric Acid?

Which of the following anions gives a precipitate soluble in 0.25 M NH4OH?

Anions that will give volatile products include all of the following except:

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