2) A cyanide ion selective electrode obeys the equation : E (volts) = constant - 0.05916 log [CN-] The measured potential was - 0.224 V when immersed in 0.00100 M NaCN. a) What is the value of the numerical constant from the calibration equation? -0.402 b) Using (a), what is the [CN] in a solution with an E= -0.286 V ?

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...
icon
Related questions
Question
### Cyanide Ion Selective Electrode Calibration

**Equation and Conditions:**

A cyanide ion selective electrode obeys the equation:

\[ E (\text{volts}) = \text{constant} - 0.05916 \log [\text{CN}^-] \]

The measured potential was **-0.224 V** when immersed in **0.00100 M NaCN**.

**Questions:**

a) **Determine the Numerical Constant:**

   Calculate the value of the numerical constant from the calibration equation.

   - Answer: \(-0.40\)

b) **Calculate \([\text{CN}^-]\):**

   Using the constant from part (a), determine the \([\text{CN}^-]\) in a solution with a potential of **E = -0.286 V**.
Transcribed Image Text:### Cyanide Ion Selective Electrode Calibration **Equation and Conditions:** A cyanide ion selective electrode obeys the equation: \[ E (\text{volts}) = \text{constant} - 0.05916 \log [\text{CN}^-] \] The measured potential was **-0.224 V** when immersed in **0.00100 M NaCN**. **Questions:** a) **Determine the Numerical Constant:** Calculate the value of the numerical constant from the calibration equation. - Answer: \(-0.40\) b) **Calculate \([\text{CN}^-]\):** Using the constant from part (a), determine the \([\text{CN}^-]\) in a solution with a potential of **E = -0.286 V**.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 1 images

Blurred answer
Knowledge Booster
Electrochemical Cells
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY