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What is the effect on the emf of the cell shown in figure below, which has the overall reaction Zn(s) + 2H+ (aq) → Zn²+ (aq) + H₂(g), for each of the following changes? Zn anode Anode half-cell- NO₂ Zn²+ NO₂- Submit NO3 Na+ 0.76 V Voltmeter decreases increases NO3 Zn(s) →→→→ Zn²+ (aq) + 2 e¯ 2 H(aq) + 2 e-> H₂(g) Match the words in the left column to the appropriate blanks in the sentences on the right. does not change H₂(8) Cathode half-cell (standard hydrogen electrode, SHE) The pressure of the H₂ gas is increased in the cathode half-cell. As a result, Q increases consequently emf decreases Previous Answers Request Answer Reset Zinc nitrate is added to the anode half-cell. As a result, Qincreases consequently emf decreases X Incorrect; Try Again; 5 attempts remaining You filled in 2 of 8 blanks incorrectly. Sodium hydroxide is added to the cathode half-cell, decreasing [H+]. As a result, increases consequently emf decreases The surface area of the anode is doubled. During this change, Qincreases emf decreases Help

What is the effect on the emf of the cell shown in figure below, which has the overall reaction Zn(s) + 2H+ (aq) → Zn²+ (aq) + H₂(g), for each of the following changes? Zn anode Anode half-cell- NO₂ Zn²+ NO₂- Submit NO3 Na+ 0.76 V Voltmeter decreases increases NO3 Zn(s) →→→→ Zn²+ (aq) + 2 e¯ 2 H(aq) + 2 e-> H₂(g) Match the words in the left column to the appropriate blanks in the sentences on the right. does not change H₂(8) Cathode half-cell (standard hydrogen electrode, SHE) The pressure of the H₂ gas is increased in the cathode half-cell. As a result, Q increases consequently emf decreases Previous Answers Request Answer Reset Zinc nitrate is added to the anode half-cell. As a result, Qincreases consequently emf decreases X Incorrect; Try Again; 5 attempts remaining You filled in 2 of 8 blanks incorrectly. Sodium hydroxide is added to the cathode half-cell, decreasing [H+]. As a result, increases consequently emf decreases The surface area of the anode is doubled. During this change, Qincreases emf decreases Help

Principles of Instrumental Analysis
Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Chapter24: Coulometry
Section: Chapter Questions
Problem 24.4QAP: Halide ions can he deposited at a silver anode, the reaction being Ag(s) + X- AgX(s) +e- Suppose...
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35. Can u help, please? Not sure which 2 are wrong?
What is the effect on the emf of the cell shown in figure below, which has the overall reaction Zn(s) + 2H+ (aq) → Zn²+ (aq) + H₂(g), for each of the following changes? Zn anode Anode half-cell NO₂ Zn²+ NO₂- Submit NO3 0.76 V Voltmeter decreases increases Na+ does not change NO3 Zn(s) →→→ Zn²+ (aq) + 2 e¯ 2 H+ (aq) + 2 e H₂(g) Match the words in the left column to the appropriate blanks in the sentences on the right. H+ -H₂(8) Cathode half-cell (standard hydrogen electrode, SHE) Previous Answers Request Answer The pressure of the H₂ gas is increased in the cathode half-cell. As a result, Qincreases consequently emf decreases Zinc nitrate is added to the anode half-cell. As a result, increases decreases X Incorrect; Try Again; 5 attempts remaining You filled in 2 of 8 blanks incorrectly. Reset Sodium hydroxide is added to the cathode half-cell, decreasing [H+]. As a result, increases consequently emf decreases consequently emf The surface area of the anode is doubled. During this change, Q increases, emf decreases Help
Transcribed Image Text:What is the effect on the emf of the cell shown in figure below, which has the overall reaction Zn(s) + 2H+ (aq) → Zn²+ (aq) + H₂(g), for each of the following changes? Zn anode Anode half-cell NO₂ Zn²+ NO₂- Submit NO3 0.76 V Voltmeter decreases increases Na+ does not change NO3 Zn(s) →→→ Zn²+ (aq) + 2 e¯ 2 H+ (aq) + 2 e H₂(g) Match the words in the left column to the appropriate blanks in the sentences on the right. H+ -H₂(8) Cathode half-cell (standard hydrogen electrode, SHE) Previous Answers Request Answer The pressure of the H₂ gas is increased in the cathode half-cell. As a result, Qincreases consequently emf decreases Zinc nitrate is added to the anode half-cell. As a result, increases decreases X Incorrect; Try Again; 5 attempts remaining You filled in 2 of 8 blanks incorrectly. Reset Sodium hydroxide is added to the cathode half-cell, decreasing [H+]. As a result, increases consequently emf decreases consequently emf The surface area of the anode is doubled. During this change, Q increases, emf decreases Help
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