Consider the reaction below. What is the effect on the concentration of acetic acid (CH3CO2H), water (H20) hydronium ion (H30*), and acetate ion (CH3CO2 is added to the reaction? CH3CO2H (aq) + H20 (1) = H30* (aq) + CH3CO2 (aq) Ka=1.8x10-5 The concentration of CH3CO2H The concentration of H30* The concentration of CH3CO2 The concentration of H2 increases

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**Understanding the Equilibrium of Acetic Acid Reaction**

Consider the reaction below. What is the effect on the concentration of acetic acid (CH₃CO₂H), water (H₂O) hydronium ion (H₃O⁺), and acetate ion (CH₃CO₂⁻) if H₃O⁺ is added to the reaction?

\[ \text{CH}_3\text{CO}_2\text{H (aq) + H}_2\text{O (l)} \rightleftharpoons \text{H}_3\text{O}^+ \text{(aq) + CH}_3\text{CO}_2^- \text{(aq)} \]
\[ K_a = 1.8 \times 10^{-5} \]

Given below are the possible effects on the concentration of each species in the reaction:

**Changes to be determined:**

1. **The concentration of CH₃CO₂H**
    - Increases
    - Decreases
    - Does not change
    
2. **The concentration of H₃O⁺**
    - Increases
    - Decreases
    - Does not change
    
3. **The concentration of CH₃CO₂⁻**
    - Increases
    - Decreases
    - Does not change
    
4. **The concentration of H₂O**
    - Increases
    - Decreases
    - Does not change

The shown image indicates a choice presented to the learner, where they can select whether the concentrations of the constituents will increase, decrease, or remain unchanged based on the addition of H₃O⁺.

Additionally, the selection for "The concentration of H₂O" is shown as 'Increases' in the image.
Transcribed Image Text:**Understanding the Equilibrium of Acetic Acid Reaction** Consider the reaction below. What is the effect on the concentration of acetic acid (CH₃CO₂H), water (H₂O) hydronium ion (H₃O⁺), and acetate ion (CH₃CO₂⁻) if H₃O⁺ is added to the reaction? \[ \text{CH}_3\text{CO}_2\text{H (aq) + H}_2\text{O (l)} \rightleftharpoons \text{H}_3\text{O}^+ \text{(aq) + CH}_3\text{CO}_2^- \text{(aq)} \] \[ K_a = 1.8 \times 10^{-5} \] Given below are the possible effects on the concentration of each species in the reaction: **Changes to be determined:** 1. **The concentration of CH₃CO₂H** - Increases - Decreases - Does not change 2. **The concentration of H₃O⁺** - Increases - Decreases - Does not change 3. **The concentration of CH₃CO₂⁻** - Increases - Decreases - Does not change 4. **The concentration of H₂O** - Increases - Decreases - Does not change The shown image indicates a choice presented to the learner, where they can select whether the concentrations of the constituents will increase, decrease, or remain unchanged based on the addition of H₃O⁺. Additionally, the selection for "The concentration of H₂O" is shown as 'Increases' in the image.
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