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?

<p>Barium sulfate (D)</p> Signup and view all the answers

In what application is Calcium carbonate commonly used?

<p>Water softening (D)</p> Signup and view all the answers

Which anion does Barium chromate confirm with a yellow precipitate?

<p>Chromate ion (C)</p> Signup and view all the answers

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

<p>Barium acetate (B)</p> Signup and view all the answers

How is barium sulfate separated from barium chromate?

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

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

<p>Only barium hydroxide is soluble (B)</p> Signup and view all the answers

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

<p>Formation of insoluble calcium sulfate (A)</p> Signup and view all the answers

Which application is NOT correctly matched with its corresponding compound?

<p>Magnesium sulfate used in water treatment (C)</p> Signup and view all the answers

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

<p>Presence of carbonate ions (D)</p> Signup and view all the answers

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