![CHEM 125 INSTITUTE Experiment 3: OF Chemical Kinetics Rate of Reaction TECHNOLOG Post-lab Questions (10pts) It has been found that in acid solution (greater than 1 M H the rate expression for the reaction of H202 with T is of the form rate klH202][T] where kr 0.25 L mol 2-si at 25eC. Therefore the rate law over the whole range of acidity from very acid solutions to a neutral solution is given by a two-term rate expression: rate where ki has the value of 0.0115 L mol s at 25°C. Compare the relative magnitudes of these two terms under the conditions employed in your rate measurements for mixture in beaker 1. (You should find that the second term makes a negligible contribution to the reaction rate at H concentrations smaller than 3 x 10](http://img.homeworklib.com/questions/d255cf30-09fa-11ec-9f71-6db31efd7e76.png?x-oss-process=image/resize,w_560)
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![From thegiven data Atlower pH conditions. Rate,-k2[H2O2]「1-6[H2O2]「 AthigherpH conditions: RateSince. Hnegigible concentratio](http://img.homeworklib.com/questions/d30023b0-09fa-11ec-acdc-4d26ebf3d118.png?x-oss-process=image/resize,w_560)
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It has been found that in acid solution (greater than 1 M H^+) the rate expression...
16. Each of three beakers contains 25.0 mL of 0.100 M solution at 25°C. Beaker 1...
16. Each of three beakers contains 25.0 mL of 0.100 M solution at 25°C. Beaker 1 Beaker 2 Beaker 3 0.10 M NaOH 0.10 M NaHCO3 0.10 M H2CO3 a. Determine the pH of the solution in beaker 1. Justify your answer. b. In beaker 2, the reaction HCO, (aq) + H2O(1) = H,CO, (aq) + OH(aq) occurs. The value of K, for HCO, (aq) is 2.3x108 at 25°C. i. Write the K, expression for the reaction of HCO, (aq)...
1- Calculating [H+] for Pure Water: In a certain acidic solution at 25 ∘C, [H+] is...
1- Calculating [H+] for Pure Water: In a certain acidic solution at 25 ∘C, [H+] is 100 times greater than [OH −]. What is the value for [OH −] for the solution? In a certain acidic solution at 25 , [] is 100 times greater than [ ]. What is the value for [ ] for the solution? 1.0×10−8 M 1.0×10−7 M 1.0×10−6 M 1.0×10−2 M 1.0×10−9 M 2. ± Acid-Base Relationships in Water: Water ionizes by the equation H2O(l)⇌H+(aq)+OH−(aq)The...
Please answer #3! You will be using 25.00 mL of 3.00% by mass solution ({mass H_2O_2/...
Please answer #3!
You will be using 25.00 mL of 3.00% by mass solution ({mass H_2O_2/ mass solution}*100) of hydrogen peroxide. Assume the density of this solution is 1.000 g / mL. If all hydrogen peroxide decomposes to water and oxygen according to the reaction 2H_2O_2 (aq) 2H_2O (I) + O_2(g) What is the total volume of the oxygen gas generated if the temperature is 24 degree C and the pressure is 770 Torr (760 Torr = 1 atm) ?...
16. When K. of Acid-1 is larger than that of Acid-2, Acid-1 is a. Strong Acid...
16. When K. of Acid-1 is larger than that of Acid-2, Acid-1 is a. Strong Acid b. Weak Acid c. Strong Base d. Weak Base H' when it reacts with a strong 17. Water is amphoteric substance which will base. (donate or accept] 18. The value of Kwat 25 degree Celsius M (acidic, basic or 19. If [OH) is greater than the [H30'), then the solution is neutral] 20. Buffer is a mixture of and a. Strong acid, strong base...
21C.1(a) The reaction of propylxanthate ion in acetic acid buffer solutions has the mechanism A− +H+→P....
21C.1(a) The reaction of propylxanthate ion in acetic acid buffer
solutions
has the mechanism A− +H+→P. Near 30 °C the rate constant is given
by the
empirical expression kr=(2.05×1013) e−(8681K)/T dm3mol−1 s−1.
Evaluate the
energy and entropy of activation at 30 °C.
21C.1(b) The reaction A− +H+→P has a rate constant given by the
empirical
expression kr=(6.92×1012)e−(5925K)/T dm3mol−1 s−1. Evaluate the
energy and
entropy of activation at 25 °C.
Please explain why they calculated H=E-RT like that
like why is...
A buffer solution is able to maintain a constant pH when small amounts of acid or...
A buffer solution is able to maintain a constant pH when small amounts of acid or base are added to the buffer. Consider what happens when 1 mL of a 5 M solution is added or 0.005 mol of HCl are added to a 100.0 mL solution acetic acid buffer that contains 0.0100 mol of Acetic acid, HC,H,O,, and 0.0100 mol of sodium acetate, NaC,H,O,. The initial concentration of both the acid and the base are 0.0100 mol/ 0.1000 L...
10. For an aqueous solution labeled "0.10 M potassium bromide," A) the pH is greater than...
10. For an aqueous solution labeled "0.10 M potassium bromide," A) the pH is greater than 7. B) the pH = 13. D) the pH is less than 7. E) the pH = 7. C) the pH = 1. 11. For a 0.10 M solution of a weak acid, HA, with pKa = 6, which of the following is true? A) [HA] =[A-] B) [HA] does not equal [H3O+] C) [HA] =[H3O] D) [HA] = K E) [HA] = 0...
1. Identify the Brönsted acid and base in the following reaction, and identify the conjugate base...
1. Identify the Brönsted acid and base in the following reaction, and identify the conjugate base and acid formed. HSO3-(aq) + CH3NH3(aq) ------ H2SO3(aq) + CH3NH2(aq) 2. Write the formulae for the conjugate acids of: 1. a) C2042: the oxalate ion. 2.b) C6H5NH2, aniline. 3.c)NH2OH, hydroxylamine. (Use above question as a guide for where to put the H.) 3. Calculate the molarity of OH' in solutions with the following concentrations of H30*: a) 0.020 mol LP b) 1.0 x 10-5...
1. Write the equilibrium expression for the autoionization of water. Using this expression define the terms...
1. Write the equilibrium expression for the autoionization of water. Using this expression define the terms acid and base and pH. 2. Calculate the pH, pOH, Ka, Kb, pKa, and pKb for a 0.082M solution of triethylamine. 3. Calculate the pH, pOH, Ka, Kb, pKa, and pKb for a 1.570 M solution of hydrogen cyanide. 4. The acid-dissociation constant for hypochlorus acid is 3.0 X 10-8. Calculate the concentrations of H3O+, CIO-, and HCIO at equilibrium if the initial concentration...
1- Write the equilibrium constant expression for this reaction: NH3(aq)+H+(aq)→NH+4(aq) 2- A chemist prepares a solution...
1- Write the equilibrium constant expression for this
reaction:
NH3(aq)+H+(aq)→NH+4(aq)
2- A chemist prepares a solution of zinc oxalate ZnC2O4
by measuring out 1.6mg of zinc oxalate into a 500.mL volumetric
flask and filling the flask to the mark with water. Calculate the
concentration in mol/L of the chemist's zinc oxalate
solution. Round your answer to 2 significant digits.
3- Wine goes bad soon after opening because the ethanol
CH3CH2OH dissolved in it reacts with oxygen
O2 gas to form water and aqueous...
16. Each of three beakers contains 25.0 mL of 0.100 M solution at 25°C. Beaker 1 Beaker 2 Beaker 3 0.10 M NaOH 0.10 M NaHCO3 0.10 M H2CO3 a. Determine the pH of the solution in beaker 1. Justify your answer. b. In beaker 2, the reaction HCO, (aq) + H2O(1) = H,CO, (aq) + OH(aq) occurs. The value of K, for HCO, (aq) is 2.3x108 at 25°C. i. Write the K, expression for the reaction of HCO, (aq)...
Please answer #3!
You will be using 25.00 mL of 3.00% by mass solution ({mass H_2O_2/ mass solution}*100) of hydrogen peroxide. Assume the density of this solution is 1.000 g / mL. If all hydrogen peroxide decomposes to water and oxygen according to the reaction 2H_2O_2 (aq) 2H_2O (I) + O_2(g) What is the total volume of the oxygen gas generated if the temperature is 24 degree C and the pressure is 770 Torr (760 Torr = 1 atm) ?...
16. When K. of Acid-1 is larger than that of Acid-2, Acid-1 is a. Strong Acid b. Weak Acid c. Strong Base d. Weak Base H' when it reacts with a strong 17. Water is amphoteric substance which will base. (donate or accept] 18. The value of Kwat 25 degree Celsius M (acidic, basic or 19. If [OH) is greater than the [H30'), then the solution is neutral] 20. Buffer is a mixture of and a. Strong acid, strong base...
21C.1(a) The reaction of propylxanthate ion in acetic acid buffer
solutions
has the mechanism A− +H+→P. Near 30 °C the rate constant is given
by the
empirical expression kr=(2.05×1013) e−(8681K)/T dm3mol−1 s−1.
Evaluate the
energy and entropy of activation at 30 °C.
21C.1(b) The reaction A− +H+→P has a rate constant given by the
empirical
expression kr=(6.92×1012)e−(5925K)/T dm3mol−1 s−1. Evaluate the
energy and
entropy of activation at 25 °C.
Please explain why they calculated H=E-RT like that
like why is...
A buffer solution is able to maintain a constant pH when small amounts of acid or base are added to the buffer. Consider what happens when 1 mL of a 5 M solution is added or 0.005 mol of HCl are added to a 100.0 mL solution acetic acid buffer that contains 0.0100 mol of Acetic acid, HC,H,O,, and 0.0100 mol of sodium acetate, NaC,H,O,. The initial concentration of both the acid and the base are 0.0100 mol/ 0.1000 L...
10. For an aqueous solution labeled "0.10 M potassium bromide," A) the pH is greater than 7. B) the pH = 13. D) the pH is less than 7. E) the pH = 7. C) the pH = 1. 11. For a 0.10 M solution of a weak acid, HA, with pKa = 6, which of the following is true? A) [HA] =[A-] B) [HA] does not equal [H3O+] C) [HA] =[H3O] D) [HA] = K E) [HA] = 0...
1. Identify the Brönsted acid and base in the following reaction, and identify the conjugate base and acid formed. HSO3-(aq) + CH3NH3(aq) ------ H2SO3(aq) + CH3NH2(aq) 2. Write the formulae for the conjugate acids of: 1. a) C2042: the oxalate ion. 2.b) C6H5NH2, aniline. 3.c)NH2OH, hydroxylamine. (Use above question as a guide for where to put the H.) 3. Calculate the molarity of OH' in solutions with the following concentrations of H30*: a) 0.020 mol LP b) 1.0 x 10-5...
1. Write the equilibrium expression for the autoionization of water. Using this expression define the terms acid and base and pH. 2. Calculate the pH, pOH, Ka, Kb, pKa, and pKb for a 0.082M solution of triethylamine. 3. Calculate the pH, pOH, Ka, Kb, pKa, and pKb for a 1.570 M solution of hydrogen cyanide. 4. The acid-dissociation constant for hypochlorus acid is 3.0 X 10-8. Calculate the concentrations of H3O+, CIO-, and HCIO at equilibrium if the initial concentration...
1- Write the equilibrium constant expression for this
reaction:
NH3(aq)+H+(aq)→NH+4(aq)
2- A chemist prepares a solution of zinc oxalate ZnC2O4
by measuring out 1.6mg of zinc oxalate into a 500.mL volumetric
flask and filling the flask to the mark with water. Calculate the
concentration in mol/L of the chemist's zinc oxalate
solution. Round your answer to 2 significant digits.
3- Wine goes bad soon after opening because the ethanol
CH3CH2OH dissolved in it reacts with oxygen
O2 gas to form water and aqueous...
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