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Each row of the table below describes an aqueous solution at 25 °C. The second column of the table shows the initial components of the solution. • Use the checkboxes in the third column to explain the type of the initial solution. The fourth column describes a change in the solution. • Use the fifth column to predict how the change in the solution will change its pH. initial type solution initial components (check all that apply) change effect of change on pH (check one) acidic O pH higher A H₂O basic add HClO4 O pH lower neutral O pH the same acidic O pH higher B H₂O, HBr basic add KOH O pH lower neutral acidic C H₂O, HBr basic add K Br neutral acidic H₂O basic add NaClO4 neutral 0000 pH the same O pH higher O pH lower O pH the same O pH higher O pH lower pH the same

Each row of the table below describes an aqueous solution at 25 °C. The second column of the table shows the initial components of the solution. • Use the checkboxes in the third column to explain the type of the initial solution. The fourth column describes a change in the solution. • Use the fifth column to predict how the change in the solution will change its pH. initial type solution initial components (check all that apply) change effect of change on pH (check one) acidic O pH higher A H₂O basic add HClO4 O pH lower neutral O pH the same acidic O pH higher B H₂O, HBr basic add KOH O pH lower neutral acidic C H₂O, HBr basic add K Br neutral acidic H₂O basic add NaClO4 neutral 0000 pH the same O pH higher O pH lower O pH the same O pH higher O pH lower pH the same

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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### Understanding the Effect of Adding Chemicals on pH Levels #### Overview Each row of the table below describes an aqueous solution at 25 °C. The table consists of five columns: 1. **Solution Label (A, B, C, D)** 2. **Initial Components**: The chemical components present initially in the solution. 3. **Initial Type**: The initial property of the solution – whether it is acidic, basic, or neutral. 4. **Change**: A change applied to the solution by adding another chemical. 5. **Effect of Change on pH**: The result of adding the chemical on the pH of the solution. These columns guide the study to understand how different added chemicals influence the pH of various initial solutions. #### Table | Solution | Initial Components | Initial Type (check all that apply) | Change | Effect of Change on pH (check one) | |----------|---------------------|-------------------------------------|------------------------|------------------------------------| | **A** | H₂O | ☐ Acidic<br>☐ Basic<br>☑ Neutral | add HClO₄ | ☐ pH higher<br>☑ pH lower<br>☐ pH the same | | **B** | H₂O, HBr | ☐ Acidic<br>☐ Basic<br>☑ Neutral | add KOH | ☐ pH higher<br>☑ pH lower<br>☐ pH the same | | **C** | H₂O, HBr | ☐ Acidic<br>☑ Basic<br>☐ Neutral | add KBr | ☐ pH higher<br>☒ pH lower<br>☐ pH the same | | **D** | H₂O | ☐ Acidic<br>☐ Basic<br>☑ Neutral | add NaClO₄ | ☐ pH higher<br>☐ pH lower<br>☑ pH the same | #### Explanation of Changes - **Solution A (H₂O with HClO₄)**: Initially neutral water becomes acidic when perchloric acid (HClO₄) is added, thus lowering its pH. - **Solution B (H₂O, HBr with KOH)**: Initially neutral water with hydrobrom
Transcribed Image Text:### Understanding the Effect of Adding Chemicals on pH Levels #### Overview Each row of the table below describes an aqueous solution at 25 °C. The table consists of five columns: 1. **Solution Label (A, B, C, D)** 2. **Initial Components**: The chemical components present initially in the solution. 3. **Initial Type**: The initial property of the solution – whether it is acidic, basic, or neutral. 4. **Change**: A change applied to the solution by adding another chemical. 5. **Effect of Change on pH**: The result of adding the chemical on the pH of the solution. These columns guide the study to understand how different added chemicals influence the pH of various initial solutions. #### Table | Solution | Initial Components | Initial Type (check all that apply) | Change | Effect of Change on pH (check one) | |----------|---------------------|-------------------------------------|------------------------|------------------------------------| | **A** | H₂O | ☐ Acidic<br>☐ Basic<br>☑ Neutral | add HClO₄ | ☐ pH higher<br>☑ pH lower<br>☐ pH the same | | **B** | H₂O, HBr | ☐ Acidic<br>☐ Basic<br>☑ Neutral | add KOH | ☐ pH higher<br>☑ pH lower<br>☐ pH the same | | **C** | H₂O, HBr | ☐ Acidic<br>☑ Basic<br>☐ Neutral | add KBr | ☐ pH higher<br>☒ pH lower<br>☐ pH the same | | **D** | H₂O | ☐ Acidic<br>☐ Basic<br>☑ Neutral | add NaClO₄ | ☐ pH higher<br>☐ pH lower<br>☑ pH the same | #### Explanation of Changes - **Solution A (H₂O with HClO₄)**: Initially neutral water becomes acidic when perchloric acid (HClO₄) is added, thus lowering its pH. - **Solution B (H₂O, HBr with KOH)**: Initially neutral water with hydrobrom
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