Table of contents

1. The Chemical World9m
- The Scientific Method
  9m
2. Measurement and Problem Solving2h 19m
3. Matter and Energy2h 15m
4. Atoms and Elements2h 33m
5. Molecules and Compounds1h 50m
6. Chemical Composition1h 23m
7. Chemical Reactions1h 43m
8. Quantities in Chemical Reactions1h 8m
9. Electrons in Atoms and the Periodic Table2h 32m
10. Chemical Bonding2h 10m
11 Gases2h 7m
12. Liquids, Solids, and Intermolecular Forces1h 11m
13. Solutions3h 1m
14. Acids and Bases2h 14m
15. Chemical Equilibrium1h 27m
16. Oxidation and Reduction1h 33m
17. Radioactivity and Nuclear Chemistry53m

14. Acids and Bases

Arrhenius Acid and Base

Introduction to Chemistry

14. Acids and Bases

Arrhenius Acid and Base

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Multiple Choice

Which ions are formed from the dissociation of the following compound?

Sr(OH)₂ (s) → Sr²⁺ (aq) + 2 OH^-

Sr(OH)₂ (s) → Sr²⁺ (aq) + OH^-

Sr(OH)₂ (s) → 2 Sr⁺ (aq) + OH^-

Sr(OH)₂ (s) → 2 Sr⁺ (aq) + 2 OH^-

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Verified step by step guidance

Identify the compound given: Sr(OH)2. This is strontium hydroxide, a compound that can dissociate in water.

Understand the dissociation process: Dissociation is the process by which a compound breaks down into its constituent ions when dissolved in water.

Determine the ions formed: Sr(OH)2 dissociates into Sr2+ and OH- ions. The strontium ion (Sr) typically forms a 2+ charge, and each hydroxide ion (OH) carries a 1- charge.

Balance the dissociation equation: Since Sr(OH)2 contains two hydroxide ions, the balanced dissociation equation is Sr(OH)2 (s) → Sr2+ (aq) + 2 OH- (aq).

Verify the charge balance: Ensure that the total positive charge equals the total negative charge. Here, Sr2+ provides a 2+ charge, and two OH- ions provide a total of 2- charge, balancing the equation.