**Buffer Solution Calculation****Problem:** How many moles of CH₃NH₃Cl need to be added to 200.0 mL of a 0.500 M solution of CH₃NH₂ (Kb for CH₃NH₂ is 4.4 × 10⁻⁴) to make a buffer with a pH of 11.00?This is a common problem in chemistry involving buffer solutions, where the goal is to achieve a specific pH by adding a certain amount of a compound. The key to solving this problem lies in understanding the relationship between the base CH₃NH₂ and its conjugate acid CH₃NH₃Cl, and utilizing the Henderson-Hasselbalch equation to find the required moles of CH₃NH₃Cl.

A buffer is defined as a solution which can resist any change in the pH on slight addition of an…

Answered: How many moles of CH:NH;CI need to be…

How many moles of CH:NH;CI need to be added to 200.0 mL of a 0.500 M solution of CH;NH2 (Kb for CH:NH2 is 4.4 × 10 4) to make a buffer with a pH of 11.00?

Chemistry

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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

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Concept explainers

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

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**Buffer Solution Calculation**

**Problem:** How many moles of CH₃NH₃Cl need to be added to 200.0 mL of a 0.500 M solution of CH₃NH₂ (Kb for CH₃NH₂ is 4.4 × 10⁻⁴) to make a buffer with a pH of 11.00?

This is a common problem in chemistry involving buffer solutions, where the goal is to achieve a specific pH by adding a certain amount of a compound. The key to solving this problem lies in understanding the relationship between the base CH₃NH₂ and its conjugate acid CH₃NH₃Cl, and utilizing the Henderson-Hasselbalch equation to find the required moles of CH₃NH₃Cl.

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What quantity in moles of CH₃NH₃Cl need to be added to 200.0 mL of a 0.500 M solution of CH₃NH₂ (Kb for CH₃NH₂ is 4.4 × 10⁻⁴) to make a buffer with a pH of 11.00?
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