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Question 9 of 10 Which of the following best describes spectator ions? A. Ions that are made of a single element B. Ions that combine to form a precipitate C. Ions made when compounds dissolve in water D. Ions that do not participate in the reaction
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Answer

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Step 1:
Let's solve this step by step:

Step 2:
: Understanding Spectator Ions

Spectator ions are ions present in a solution that do not actively participate in a chemical reaction. They remain unchanged and do not take part in the chemical transformation.

Step 3:
: Analyzing the Definition

- These ions are typically found in aqueous solutions - They are present in the solution but do not undergo any chemical changes - They do not form new compounds or participate in the reaction mechanism

Step 4:
: Examining the Answer Choices

A. Ions that are made of a single element - This is not the correct definition of spectator ions B. Ions that combine to form a precipitate - This describes reactive ions, not spectator ions C. Ions made when compounds dissolve in water - This describes the formation of ions, but not their role in a reaction D. Ions that do not participate in the reaction - This precisely describes spectator ions

Step 5:
: Providing an Example

In a reaction like $$AgNO_{3(aq)} + NaCl_{(aq)} \rightarrow AgCl_{(s)} + NaNO_{3(aq)}
- Na^{+} and NO_{3}^{-} are spectator ions - They are present in the solution but do not react

Final Answer

Ions that do not participate in the reaction