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Group 2 Anions Introduction

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Questions and Answers

What color precipitate confirms the presence of Chromate when 2.5M Sodium acetate is added to centrifugate?

Yellow (correct)
Green
Red
White

What confirmatory reagent produces a white precipitate when added to the residue?

Sodium acetate
Calcium hydroxide
Hydrochloric acid (correct)
Barium Acetate

Which metal hydroxide is known for its high solubility in neutralizing acidic solutions?

Sodium hydroxide
Magnesium hydroxide (correct)
Barium hydroxide
Calcium hydroxide

What compound is formed when Barium Acetate reacts with Sulfate ions?

Barium sulfate (D) Signup and view all the answers

In what application is Calcium carbonate commonly used?

Water softening (D) Signup and view all the answers

Which anion does Barium chromate confirm with a yellow precipitate?

Chromate ion (C) Signup and view all the answers

What is the group reagent used to precipitate chromate and sulfate ions?

Barium acetate (B) Signup and view all the answers

How is barium sulfate separated from barium chromate?

By its insolubility in 3M HCl (D) Signup and view all the answers

Which of the following statements about group 2 metal hydroxides is NOT true?

Only barium hydroxide is soluble (B) Signup and view all the answers

What reaction occurs when a soluble calcium salt is mixed with a soluble sulfate salt?

Formation of insoluble calcium sulfate (A) Signup and view all the answers

Which application is NOT correctly matched with its corresponding compound?

Magnesium sulfate used in water treatment (C) Signup and view all the answers

What does the vigorous effervescence produced upon addition of KCIO indicate?

Presence of carbonate ions (D) Signup and view all the answers