QUESTION 6 In Test Tube 5, you will be using 5.0 mL of 0.0020 M KSCN. Each reaction mixture will be diluted to a final volume of 10.0 mL. What is [SCN 10 in Test Tube 5? Type your answer, WITHOUT UNITS, in the box below. Include 2 significant figures. QUESTION 7 What is the correct expression for Kc for the reaction you will be studying in this experiment. Assume that all concentrations are measured at equilibrium. The chemical equation for this reaction is: FeSCN 2+ (aq) Fe 3+ (aq) + SCN (aq) Kc = ([Fe³+][SCN]) / [FeSCN²+] Kc = [FeSCN²+]/([Fe³+][SCN) Kc = [SCN] / [[Fe³+][FeSCN²+]) Kc = [Fe³+][SCN][FeSCN²+] None of the above QUESTION 8 Why will you be measuring the absorbance of each of your reaction mixtures after they have reached equilibrium? The measured value of the absorbance is identical to the equilibrium concentration of FeSCN2+, [FeSCN²+Jeq The measured value of the absorbance is directly proportional to the equilibrium concentration of Fe3+, [Fe³+ leq The measured value of the absorbance is directly proportional to the equilibrium concentration of FeSCN²+, [FeSCN²+ Jeq The measured value of the absorbance is inversely proportional to the equilibrium concentration of FeSCN2+, [FeSCN²+Jeq None of the above QUESTION 9 True or false? The initial concentration of FeSCN 2+ in each reaction will be the same as the initial concentration of Fe 3+. True False
QUESTION 6 In Test Tube 5, you will be using 5.0 mL of 0.0020 M KSCN. Each reaction mixture will be diluted to a final volume of 10.0 mL. What is [SCN 10 in Test Tube 5? Type your answer, WITHOUT UNITS, in the box below. Include 2 significant figures. QUESTION 7 What is the correct expression for Kc for the reaction you will be studying in this experiment. Assume that all concentrations are measured at equilibrium. The chemical equation for this reaction is: FeSCN 2+ (aq) Fe 3+ (aq) + SCN (aq) Kc = ([Fe³+][SCN]) / [FeSCN²+] Kc = [FeSCN²+]/([Fe³+][SCN) Kc = [SCN] / [[Fe³+][FeSCN²+]) Kc = [Fe³+][SCN][FeSCN²+] None of the above QUESTION 8 Why will you be measuring the absorbance of each of your reaction mixtures after they have reached equilibrium? The measured value of the absorbance is identical to the equilibrium concentration of FeSCN2+, [FeSCN²+Jeq The measured value of the absorbance is directly proportional to the equilibrium concentration of Fe3+, [Fe³+ leq The measured value of the absorbance is directly proportional to the equilibrium concentration of FeSCN²+, [FeSCN²+ Jeq The measured value of the absorbance is inversely proportional to the equilibrium concentration of FeSCN2+, [FeSCN²+Jeq None of the above QUESTION 9 True or false? The initial concentration of FeSCN 2+ in each reaction will be the same as the initial concentration of Fe 3+. True False
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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![**Question 6:**
In Test Tube 5, you will be using 5.0 mL of 0.0020 M KSCN. Each reaction mixture will be diluted to a final volume of 10.0 mL. What is [SCN^-]_0 in Test Tube 5? Type your answer, **without units**, in the box below. Include **2 significant figures**.
---
**Question 7:**
What is the correct expression for K_C for the reaction you will be studying in this experiment? Assume that all concentrations are measured at equilibrium. The chemical equation for this reaction is:
Fe^3+(aq) + SCN^−(aq) ⇌ FeSCN^2+(aq)
- \( K_C = \frac{[\text{Fe}^{3+}][\text{SCN}^-]}{[\text{FeSCN}^{2+}]} \)
- \( K_C = \frac{[\text{FeSCN}^{2+}]}{([\text{Fe}^{3+}][\text{SCN}^-])} \)
- \( K_C = \frac{[\text{SCN}^-]}{([\text{Fe}^{3+}][\text{FeSCN}^{2+}])} \)
- \( K_C = \frac{[\text{Fe}^{3+}][\text{SCN}^-]}{[\text{FeSCN}^{2+}]} \)
- ⚪ None of the above
---
**Question 8:**
Why will you be measuring the absorbance of each of your reaction mixtures after they have reached equilibrium?
- The measured value of the absorbance is **identical** to the equilibrium concentration of FeSCN^2+, [FeSCN^2+]_eq
- The measured value of the absorbance is **directly proportional** to the equilibrium concentration of Fe^3+, [Fe^3+]_eq
- The measured value of the absorbance is **directly proportional** to the equilibrium concentration of FeSCN^2+, [FeSCN^2+]_eq
- The measured value of the absorbance is **inversely proportional** to the equilibrium concentration of FeSCN^2+, [FeSCN^2+]_eq
- ⚪ None of the above
---
**Question 9:**
**True or false](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4a31084d-53de-40ac-8333-22b405fb7df5%2F9a4f5ba0-6a53-48d3-9f9f-b7018d064c51%2F1pc8ydk_processed.png&w=3840&q=75)
Transcribed Image Text:**Question 6:**
In Test Tube 5, you will be using 5.0 mL of 0.0020 M KSCN. Each reaction mixture will be diluted to a final volume of 10.0 mL. What is [SCN^-]_0 in Test Tube 5? Type your answer, **without units**, in the box below. Include **2 significant figures**.
---
**Question 7:**
What is the correct expression for K_C for the reaction you will be studying in this experiment? Assume that all concentrations are measured at equilibrium. The chemical equation for this reaction is:
Fe^3+(aq) + SCN^−(aq) ⇌ FeSCN^2+(aq)
- \( K_C = \frac{[\text{Fe}^{3+}][\text{SCN}^-]}{[\text{FeSCN}^{2+}]} \)
- \( K_C = \frac{[\text{FeSCN}^{2+}]}{([\text{Fe}^{3+}][\text{SCN}^-])} \)
- \( K_C = \frac{[\text{SCN}^-]}{([\text{Fe}^{3+}][\text{FeSCN}^{2+}])} \)
- \( K_C = \frac{[\text{Fe}^{3+}][\text{SCN}^-]}{[\text{FeSCN}^{2+}]} \)
- ⚪ None of the above
---
**Question 8:**
Why will you be measuring the absorbance of each of your reaction mixtures after they have reached equilibrium?
- The measured value of the absorbance is **identical** to the equilibrium concentration of FeSCN^2+, [FeSCN^2+]_eq
- The measured value of the absorbance is **directly proportional** to the equilibrium concentration of Fe^3+, [Fe^3+]_eq
- The measured value of the absorbance is **directly proportional** to the equilibrium concentration of FeSCN^2+, [FeSCN^2+]_eq
- The measured value of the absorbance is **inversely proportional** to the equilibrium concentration of FeSCN^2+, [FeSCN^2+]_eq
- ⚪ None of the above
---
**Question 9:**
**True or false
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