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Consider the following table: Name Formula Conjugate Acid Ammonia NH3 Methylamine CH3NH₂ Ethylamine C₂H5NH2 C₂H5NH3+ Aniline C6H5NH₂ C6H5NH3+ Pyridine C5 H5N C5H5NH* NH₁+ CH3NH3 pyridine methylamine O ethylamine O ammonia Kb 1.8 x 10-5 4.38 x 10-4 Which base would be the best choice for preparing a pH = 4.50 buffer? O aniline 5.6 × 10-4 3.8 x 10-10 1.7 x 10-⁹

Consider the following table: Name Formula Conjugate Acid Ammonia NH3 Methylamine CH3NH₂ Ethylamine C₂H5NH2 C₂H5NH3+ Aniline C6H5NH₂ C6H5NH3+ Pyridine C5 H5N C5H5NH* NH₁+ CH3NH3 pyridine methylamine O ethylamine O ammonia Kb 1.8 x 10-5 4.38 x 10-4 Which base would be the best choice for preparing a pH = 4.50 buffer? O aniline 5.6 × 10-4 3.8 x 10-10 1.7 x 10-⁹

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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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**Consider the following table:** | Name | Formula | Conjugate Acid | \( K_b \) | |-------------|-----------|----------------|------------------| | Ammonia | \( \text{NH}_3 \) | \( \text{NH}_4^+ \) | \( 1.8 \times 10^{-5} \) | | Methylamine | \( \text{CH}_3\text{NH}_2 \) | \( \text{CH}_3\text{NH}_3^+ \) | \( 4.38 \times 10^{-4} \) | | Ethylamine | \( \text{C}_2\text{H}_5\text{NH}_2 \) | \( \text{C}_2\text{H}_5\text{NH}_3^+ \) | \( 5.6 \times 10^{-4} \) | | Aniline | \( \text{C}_6\text{H}_5\text{NH}_2 \) | \( \text{C}_6\text{H}_5\text{NH}_3^+ \) | \( 3.8 \times 10^{-10} \) | | Pyridine | \( \text{C}_5\text{H}_5\text{N} \) | \( \text{C}_5\text{H}_5\text{NH}^+ \) | \( 1.7 \times 10^{-9} \) | **Which base would be the best choice for preparing a pH = 4.50 buffer?** - ☐ aniline - ☐ pyridine - ☐ methylamine - ☐ ethylamine - ☐ ammonia
Transcribed Image Text:**Consider the following table:** | Name | Formula | Conjugate Acid | \( K_b \) | |-------------|-----------|----------------|------------------| | Ammonia | \( \text{NH}_3 \) | \( \text{NH}_4^+ \) | \( 1.8 \times 10^{-5} \) | | Methylamine | \( \text{CH}_3\text{NH}_2 \) | \( \text{CH}_3\text{NH}_3^+ \) | \( 4.38 \times 10^{-4} \) | | Ethylamine | \( \text{C}_2\text{H}_5\text{NH}_2 \) | \( \text{C}_2\text{H}_5\text{NH}_3^+ \) | \( 5.6 \times 10^{-4} \) | | Aniline | \( \text{C}_6\text{H}_5\text{NH}_2 \) | \( \text{C}_6\text{H}_5\text{NH}_3^+ \) | \( 3.8 \times 10^{-10} \) | | Pyridine | \( \text{C}_5\text{H}_5\text{N} \) | \( \text{C}_5\text{H}_5\text{NH}^+ \) | \( 1.7 \times 10^{-9} \) | **Which base would be the best choice for preparing a pH = 4.50 buffer?** - ☐ aniline - ☐ pyridine - ☐ methylamine - ☐ ethylamine - ☐ ammonia
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