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In a dilute nitric acid solution, Fe" reacts with thiocyanate ion (SCN) to form a dark-red complex: Fe(H,0)J + SCN The equilibrium concentration of (Fe(H,O),NCS]** may be determined how darkly colored the solution is (measured by a spectrometer). In one such experiment, 1.0 mL of 0.20 M Fe(NO,), was mixed with 1.0 mL of 1.0 X 10M KSCN and 8.0 H,0 + [Fe(H,O),NCS]*

In a dilute nitric acid solution, Fe" reacts with thiocyanate ion (SCN) to form a dark-red complex: Fe(H,0)J + SCN The equilibrium concentration of (Fe(H,O),NCS]** may be determined how darkly colored the solution is (measured by a spectrometer). In one such experiment, 1.0 mL of 0.20 M Fe(NO,), was mixed with 1.0 mL of 1.0 X 10M KSCN and 8.0 H,0 + [Fe(H,O),NCS]*

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter17: Principles Of Chemical Reactivity: Other Aspects Of Aqueous Equilibria
Section17.6: Equilibria Involving Complex Ions
Problem 1.3ACP: Use the formation constant of [Au(CN)2] in Appendix K to determine the equilibrium concentration of...
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10 In a dilute nitric acid solution, Fe" reacts with thiocyanate ion (SCN ) to form a dark-red complex: [Fe(H,O),J + SCN = H,0 + [Fe(H-0),NCS]*" The equilibrium concentration of (Fe(H-0),NCS]" may be determined how darkly colored the solution is (measured by a spectrometer). In one such experiment, 1.0 mL of 0.20 M Fe(NO), was mixed with 1.0 mL of 1.0 X 10 M KSCN and 8.0 mL of dilute HNO, The color of the solution quanti- tatively indicated that the [Fe{H_O),NCS] concen- tration was 7.3 x 10 M. Calculate the formation constant for [Fe(H,O),NCS]
Transcribed Image Text:10 In a dilute nitric acid solution, Fe" reacts with thiocyanate ion (SCN ) to form a dark-red complex: [Fe(H,O),J + SCN = H,0 + [Fe(H-0),NCS]*" The equilibrium concentration of (Fe(H-0),NCS]" may be determined how darkly colored the solution is (measured by a spectrometer). In one such experiment, 1.0 mL of 0.20 M Fe(NO), was mixed with 1.0 mL of 1.0 X 10 M KSCN and 8.0 mL of dilute HNO, The color of the solution quanti- tatively indicated that the [Fe{H_O),NCS] concen- tration was 7.3 x 10 M. Calculate the formation constant for [Fe(H,O),NCS]
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