Homework Answers
![fe (aq) + SCN- (aq) FeSCN²+ Caq.) ; K= 207 K = (FeSCN²77 (Fe3+] [SCN- [ ] → represent Concentration The equilibrium mixture w](http://img.homeworklib.com/questions/998346e0-731a-11ea-815e-b142ca53ad2f.png?x-oss-process=image/resize,w_560)
In 5th question instead of
FeSCN(aq) there should be FeSCN2+(aq).
4. The decomposition of hydrogen peroxide, H2O2, produces water and oxygen gas. a. Write a balanced equation for t...
4. The decomposition of hydrogen peroxide, H2O2, produces water and oxygen gas. a. Write a balanced equation for this decomposition reaction. b. The reaction is faster with the addition of potassium iodide, KI. Should this chemical appear in the balanced reaction? What is its purpose? 5. If you were running a reaction at 25°C and increased the temperature 30°C to 55°C. How much faster should the reaction at the higher temperature be? 4. For the reaction Fe3+ (aq) + SCN...
Review |Constants Periodic Table Consider the following reaction: Fe (aq) SCN (aq)FeSCN?+(aq) A solution is made containing an initial | Fe | of 1.2x10-3 M and an initial [SCN of 8.2x104 M A...
Review |Constants Periodic Table Consider the following reaction: Fe (aq) SCN (aq)FeSCN?+(aq) A solution is made containing an initial | Fe | of 1.2x10-3 M and an initial [SCN of 8.2x104 M At equilibrium, |FeSCN2+-1.8x10-4 M. We were unable to transcribe this image
Review |Constants Periodic Table Consider the following reaction: Fe (aq) SCN (aq)FeSCN?+(aq) A solution is made containing an initial | Fe | of 1.2x10-3 M and an initial [SCN of 8.2x104 M At equilibrium, |FeSCN2+-1.8x10-4 M.
1. A student mixes 5.00 mL of 2.00 x 10 M Fe(NO3)3 with 5.0 mL of...
1. A student mixes 5.00 mL of 2.00 x 10 M Fe(NO3)3 with 5.0 mL of 2.00 x 10-3 M KSCN. She finds that in the equilibrium mixture the concentration of FeSCN+2 is 1.2 x 104 M. Find the Kc for the reaction of Fe (aq) + SCN (aq) → FeSCN2(aq) using the following steps. a. Find the initial concentration of Fe and SCN. (Use Equation 4). Record the value in the ICE Chart below. b. What is the equilibrium...
Section Name Experiment 23 Advance Study Assignment: Determination of the Equilibrium Constant for a Chemical Reaction...
Section Name Experiment 23 Advance Study Assignment: Determination of the Equilibrium Constant for a Chemical Reaction 1. A student mixes 5.00 mL 2.00 X 10M Fe(NO), with 5.00 ml 2.00 x 10-M KSCN. She finds that in the equilibrium mixture the concentration of FeSCN is 1.40 x 10M. Find K for the reaction Fe(aq) + SCN (aq) FeSCN2(aq). Step 1 Find the number of moles Fe and SCN initially present. (Use Eq. 3.) (5.00 x103 LX (300X163) = (x 103...
Consider the following: A student mixes 5.00 mL 2.00 × 10−3 M Fe(NO3)3 with 3.00 mL...
Consider the following: A student mixes 5.00 mL 2.00 × 10−3 M Fe(NO3)3 with 3.00 mL 2.00 × 10−3 M KSCN. She finds that in the equilibrium mixture the concentration of FeSCN2+ is 1.28 × 10−4 M. Find Kc for the reaction Fe3+(aq) + SCN−(aq) ↔ FeSCN2+(aq). a. What is the initial concentration of Fe3+ in the reaction mixture? [Fe3+] = ___ x 10-3 M b. What is the initial concentration of SCN- in the reaction mixture? [SCN-] = ___...
Fe (aq)SCN-(aq) FeSCN (aq) thiocyanate iron(II) thiocyanoiron(il) Introduction When the reactants shown above, are combined, chemical...
Fe (aq)SCN-(aq) FeSCN (aq) thiocyanate iron(II) thiocyanoiron(il) Introduction When the reactants shown above, are combined, chemical equilibrium is reached rapidly. Once equilibrium is established, the equilibrium constant can be calculated if the concentration of all the ions are known: [FeSCNP.he [SCN-... and (Feng Your task is to prepare three different equilibrium systems that contain different concentrations of these ions. Keep in mind that although the concentrations will be different, the value of the equilibrium constant Ke will be indeed constant...
prelab /postlab all questions please Questions 1. For the reaction at 20°C, NH3(aq) + H+ (aq)...
prelab /postlab all questions please
Questions 1. For the reaction at 20°C, NH3(aq) + H+ (aq) NH4(aq), the equilibrium constant is calculated to be K = to 4.5 x10%. CHAT] A. Write the Equilibrium expression for this reaction. Keq = ỞNH TH] B. From the size of the number for Keq, does the equilibrium lie to the left or to the right? Right 2. If the reaction between iron(III) ion and thiocyanate ion, Fe3+ (aq) + SCN (aq) → FeSCN2+(aq),...
As you will do in lab, a student prepared the following 2 mixtures and recorded their absorbances...
As you will do in lab, a student prepared the following 2 mixtures and recorded their absorbances in a cuvette with a 1.00 cm path length Table 1.Absorbance of iron (Il) thiocyanate Volume, ml Fe3- 10.0 0.020 M2.64 x 10M Absorbance SCN 10.0 10.0 Mix #1 0.20 M Fel 10.01 0.769 0.495 1. Write the balanced equilibrium reaction of Fe(aq) with SCN (aq) to form [FeSCNJ (aq). 2. Write the equilibrium formation constant expression for the reaction (Kyexpression) Determination of...
2. When is equilibrium established in a reversible reaction? 3. How does a system at equibbeium...
2. When is equilibrium established in a reversible reaction? 3. How does a system at equibbeium respond to the addition of more reactant? 4. How does a system at equilibrium respond to the addition of more peoducr? 5. In Part C, we look at the following reaction Fe (ag)+SCN (ag) FeSCN (ag) Copyright C 2014 Peanon Edction, Inc 207 Laboratory Mansal for Genenal Orgonic, and Bological Chemny 208 a Write the equilibriam constant expression for the reaction if the equilibrium...
can you please help me with this Data and Calculations Trial 0:29 Absorbance 0.378 Je 0.086...
can you please help me with this
Data and Calculations Trial 0:29 Absorbance 0.378 Je 0.086 Trial 2 0.47 Trial 3 0.632 Trial 4 0.729 0.686 Absorbance of standard Triw. 329 0.6 6 Temperature ke [Fe(SCN) 2+]/([Fe3+] [SCN-]) Ferrag) + SCN Cag) 2 FescN2t (ag) Absorbance of standard (Trial) Temperature 0.3 Ke expression: [Fe] 0.0010 [SCN) 10.00040 [FeSCN? Jeg [Fe [SCN ] Ke value Average of Ke values Percent error (see pg 7): (Discuss this result as part of your...
4. The decomposition of hydrogen peroxide, H2O2, produces water and oxygen gas. a. Write a balanced equation for this decomposition reaction. b. The reaction is faster with the addition of potassium iodide, KI. Should this chemical appear in the balanced reaction? What is its purpose? 5. If you were running a reaction at 25°C and increased the temperature 30°C to 55°C. How much faster should the reaction at the higher temperature be? 4. For the reaction Fe3+ (aq) + SCN...
Review |Constants Periodic Table Consider the following reaction: Fe (aq) SCN (aq)FeSCN?+(aq) A solution is made containing an initial | Fe | of 1.2x10-3 M and an initial [SCN of 8.2x104 M At equilibrium, |FeSCN2+-1.8x10-4 M. We were unable to transcribe this image
Review |Constants Periodic Table Consider the following reaction: Fe (aq) SCN (aq)FeSCN?+(aq) A solution is made containing an initial | Fe | of 1.2x10-3 M and an initial [SCN of 8.2x104 M At equilibrium, |FeSCN2+-1.8x10-4 M.
1. A student mixes 5.00 mL of 2.00 x 10 M Fe(NO3)3 with 5.0 mL of 2.00 x 10-3 M KSCN. She finds that in the equilibrium mixture the concentration of FeSCN+2 is 1.2 x 104 M. Find the Kc for the reaction of Fe (aq) + SCN (aq) → FeSCN2(aq) using the following steps. a. Find the initial concentration of Fe and SCN. (Use Equation 4). Record the value in the ICE Chart below. b. What is the equilibrium...
Section Name Experiment 23 Advance Study Assignment: Determination of the Equilibrium Constant for a Chemical Reaction 1. A student mixes 5.00 mL 2.00 X 10M Fe(NO), with 5.00 ml 2.00 x 10-M KSCN. She finds that in the equilibrium mixture the concentration of FeSCN is 1.40 x 10M. Find K for the reaction Fe(aq) + SCN (aq) FeSCN2(aq). Step 1 Find the number of moles Fe and SCN initially present. (Use Eq. 3.) (5.00 x103 LX (300X163) = (x 103...
Fe (aq)SCN-(aq) FeSCN (aq) thiocyanate iron(II) thiocyanoiron(il) Introduction When the reactants shown above, are combined, chemical equilibrium is reached rapidly. Once equilibrium is established, the equilibrium constant can be calculated if the concentration of all the ions are known: [FeSCNP.he [SCN-... and (Feng Your task is to prepare three different equilibrium systems that contain different concentrations of these ions. Keep in mind that although the concentrations will be different, the value of the equilibrium constant Ke will be indeed constant...
prelab /postlab all questions please
Questions 1. For the reaction at 20°C, NH3(aq) + H+ (aq) NH4(aq), the equilibrium constant is calculated to be K = to 4.5 x10%. CHAT] A. Write the Equilibrium expression for this reaction. Keq = ỞNH TH] B. From the size of the number for Keq, does the equilibrium lie to the left or to the right? Right 2. If the reaction between iron(III) ion and thiocyanate ion, Fe3+ (aq) + SCN (aq) → FeSCN2+(aq),...
As you will do in lab, a student prepared the following 2 mixtures and recorded their absorbances in a cuvette with a 1.00 cm path length Table 1.Absorbance of iron (Il) thiocyanate Volume, ml Fe3- 10.0 0.020 M2.64 x 10M Absorbance SCN 10.0 10.0 Mix #1 0.20 M Fel 10.01 0.769 0.495 1. Write the balanced equilibrium reaction of Fe(aq) with SCN (aq) to form [FeSCNJ (aq). 2. Write the equilibrium formation constant expression for the reaction (Kyexpression) Determination of...
2. When is equilibrium established in a reversible reaction? 3. How does a system at equibbeium respond to the addition of more reactant? 4. How does a system at equilibrium respond to the addition of more peoducr? 5. In Part C, we look at the following reaction Fe (ag)+SCN (ag) FeSCN (ag) Copyright C 2014 Peanon Edction, Inc 207 Laboratory Mansal for Genenal Orgonic, and Bological Chemny 208 a Write the equilibriam constant expression for the reaction if the equilibrium...
can you please help me with this
Data and Calculations Trial 0:29 Absorbance 0.378 Je 0.086 Trial 2 0.47 Trial 3 0.632 Trial 4 0.729 0.686 Absorbance of standard Triw. 329 0.6 6 Temperature ke [Fe(SCN) 2+]/([Fe3+] [SCN-]) Ferrag) + SCN Cag) 2 FescN2t (ag) Absorbance of standard (Trial) Temperature 0.3 Ke expression: [Fe] 0.0010 [SCN) 10.00040 [FeSCN? Jeg [Fe [SCN ] Ke value Average of Ke values Percent error (see pg 7): (Discuss this result as part of your...
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