Homework Answers
1) Reaction steps :
The iodide ion (I-) and persulfate ion (S2O82-) reacts to produce I2 (Iodine) and sulfate (SO42-) .
Ammonium persulfate oxidises iodide to iodine.
S2O82- + 2 I- --> 2 SO42- + I2
The Iodine formed is immediately consumed by thiosulfate ion (S2O32- )
Sodium thiosulfate is used to reduce iodine to iodide
2 S2O32- + I2 --> S4O62- + 2 I-
As all S2O32 are consumed , the excess of iodine will react with starch to form blue colour solution.
I2 + (C6H10O5)n .H2O --> blue complex
Rate of the reaction = 
here volume of the S2O32- as well as volume of solution and time is given, But the concenration of S2O32- is unkown.......to find the rate of the reaction.
Add Answer to:
II. Rate Measurement - Solution 2 1. Calculate the rate of reaction for the solution to...
How do I calculate the Rate of Reaction and the Relative Rate of Reaction? 0.04M 0.1M...
How do I calculate the Rate of Reaction and the Relative Rate of
Reaction?
0.04M 0.1M Initial I Concentration Initial S2082- Concentration Show a calculation of how you calculated the rate of reaction Rate of Reaction Use M/s to represent (mol/L)/s Show a calculation of how you calculated the relative rate of reaction Relative Rate of Reaction Reaction 1 Save&Continue Time to Colour Change 948 Numeric answers include a number followed by units. Nothing else. Pay attention to precision. Use...
From the data table determine the rate law for reactions 1-4 and calculate the value of...
From the data table determine the rate law for reactions 1-4
and calculate the value of k for each. Thanks
I-IV
BACKGROUND
INFORMATION
Given: 3% H2O2 Concentration= 0.88M & 1.5% H2O2
Concentration= 0.44 M
•Calculation of H2O2 after mixing for parts I,II, IV= 0.704 M
•Calculation of I^- after mixing for parts I,II, IV= 0.10
M
•Calculation of Initial (mol/L-s)
Filled in Table
Now the solutions for Rate Order and Rate Constant are
needed
Reactants 8 ml 30% HO, 2...
Question 2 0/1 pts A solution was prepared by dissolving 8.03 g of (NH4)2SO4 (MW =...
Question 2 0/1 pts A solution was prepared by dissolving 8.03 g of (NH4)2SO4 (MW = 132.14 g/mol; specific volume = .565 ml/g) in 35.0 ml of water. The final volume of the solution is __ml. Question 3 0/2 pts A solution was prepared by dissolving 8.03 g of (NH4)2SO4 (MW = 132.14 g/mol; specific volume = .565 ml/g) in 35.0 ml of water. The concentration of (NH4)2SO4 in the solution is ___%(w/v).
5. An elementary reaction has the form 2A → B. The rate law is Rate A)...
5. An elementary reaction has the form 2A → B. The rate law is Rate A) k[A] B) 2 k[A] C) k? [A] D) k[A] 6. For some reaction, when concentration of reactant "A" doubles, the rate of the reaction doubles. The reaction is order in reactant A. B) 1" A oth C) 2nd D) 3rd 7. Tetrahydrofuran (commonly referred to as THF) is an organic solvent with a density of 0.889 g/mL. A solution is prepared by dissolving 11.8...
2. In this experiment you will quantitatively measure a reaction rate of 5,0 2. with I...
2. In this experiment you will quantitatively measure a reaction rate of 5,0 2. with I in solu- tion to produce I, according to the following reaction: 5,0,- +21 slow -> 1, +2 SO,2- The color change is very sudden and dramatic when 2 x 10+ mol of I, is produced. The time required to produce 2 x 10 mol of I, can be measured accurately. rate of reaction. A A S,01 ΔΕ ΔΙ a) Write the rate law for...
A solution of HNO, is standardized by reaction with pure sodium carbonate. 2H Na,CO, » 2...
A solution of HNO, is standardized by reaction with pure sodium carbonate. 2H Na,CO, » 2 Na* +H,O + CO2 A volume of 27.48 ± 0.05 mL of HNO3 solution was required for complete reaction with 0.8371 ± 0.0008 g of Na,CO3, (FM 105.988 0.001 g/mol). Find the molarity of the HNO solution and its absolute uncertainty Note: Significant figures are graded for this problem. To avoid rounding errors, do not round your answers until the very end of your...
The rate law for a general reaction involving reactant A is given by the equation rate...
The rate law for a general reaction involving reactant A is given by the equation rate = k[A]?, where rate is the rate of the reaction, k is the rate constant, [A] is the concentration of reactant A, and the exponent 2 is the order of reaction for reactant A. What is the rate constant, k, if the reaction rate at 450.°C is 1.23x10-1 mol/L.s when the concentration of A is 0.220 mol/L? 1/Mos When heated to 75°C, 1 mole...
A solution of HNO2 is standardized by reaction with pure sodium carbonate. 2 Na* H20 2H Na2C03 - CO2 A volume of 26.18...
A solution of HNO2 is standardized by reaction with pure sodium carbonate. 2 Na* H20 2H Na2C03 - CO2 A volume of 26.18 ± 0.05 mL of HNO2 solution was required for complete reaction with 0.9243 ± 0.0007 g of Na,CO3, (FM 105.988 0.001 g/mol). Find the molarity of the HNO2 solution and its absolute uncertainty Note: Significant figures are graded for this problem. To avoid rounding errors, do not round your answers until the very end of your calculations...
A solution of HNO is standardized by reaction with pure sodium carbonate 2H+ + Na,CO3-2 Na+ + H2O + CO2 A volume of 25....
A solution of HNO is standardized by reaction with pure sodium carbonate 2H+ + Na,CO3-2 Na+ + H2O + CO2 A volume of 25.29 + 0.05 mL of HNO3 solution was required for complete reaction with 0.8380+0.0008 g of Na,CO3. (FN 105.988 0.001 g/mol). Find the molarity of the HNO3 solution and its absolute uncertainty. Note: Significant figures are graded for this problem. To avoid rounding errors, do not round your answers until the very end of your calculations IHNO,I-I...
The reaction A ------> B (1) with rate constant, k1= 0.5 min-1 at 400 K is...
The reaction A ------> B (1) with rate constant, k1= 0.5 min-1 at 400 K is to be carried out in an isothermal PFR. However, a second reaction A ----> C (2) with rate constant, k2= 0.1 min-1at 400 K occurs concurrently with reaction (1). The concentration of Ain the feed is CA0= 2 mol dm-3 and the volumetric flow rate of the feed is v0= 4 dm3min-1. (a) Determine the mean residence time, t and the reactor volume, V...
How do I calculate the Rate of Reaction and the Relative Rate of
Reaction?
0.04M 0.1M Initial I Concentration Initial S2082- Concentration Show a calculation of how you calculated the rate of reaction Rate of Reaction Use M/s to represent (mol/L)/s Show a calculation of how you calculated the relative rate of reaction Relative Rate of Reaction Reaction 1 Save&Continue Time to Colour Change 948 Numeric answers include a number followed by units. Nothing else. Pay attention to precision. Use...
From the data table determine the rate law for reactions 1-4
and calculate the value of k for each. Thanks
I-IV
BACKGROUND
INFORMATION
Given: 3% H2O2 Concentration= 0.88M & 1.5% H2O2
Concentration= 0.44 M
•Calculation of H2O2 after mixing for parts I,II, IV= 0.704 M
•Calculation of I^- after mixing for parts I,II, IV= 0.10
M
•Calculation of Initial (mol/L-s)
Filled in Table
Now the solutions for Rate Order and Rate Constant are
needed
Reactants 8 ml 30% HO, 2...
Question 2 0/1 pts A solution was prepared by dissolving 8.03 g of (NH4)2SO4 (MW = 132.14 g/mol; specific volume = .565 ml/g) in 35.0 ml of water. The final volume of the solution is __ml. Question 3 0/2 pts A solution was prepared by dissolving 8.03 g of (NH4)2SO4 (MW = 132.14 g/mol; specific volume = .565 ml/g) in 35.0 ml of water. The concentration of (NH4)2SO4 in the solution is ___%(w/v).
5. An elementary reaction has the form 2A → B. The rate law is Rate A) k[A] B) 2 k[A] C) k? [A] D) k[A] 6. For some reaction, when concentration of reactant "A" doubles, the rate of the reaction doubles. The reaction is order in reactant A. B) 1" A oth C) 2nd D) 3rd 7. Tetrahydrofuran (commonly referred to as THF) is an organic solvent with a density of 0.889 g/mL. A solution is prepared by dissolving 11.8...
2. In this experiment you will quantitatively measure a reaction rate of 5,0 2. with I in solu- tion to produce I, according to the following reaction: 5,0,- +21 slow -> 1, +2 SO,2- The color change is very sudden and dramatic when 2 x 10+ mol of I, is produced. The time required to produce 2 x 10 mol of I, can be measured accurately. rate of reaction. A A S,01 ΔΕ ΔΙ a) Write the rate law for...
A solution of HNO, is standardized by reaction with pure sodium carbonate. 2H Na,CO, » 2 Na* +H,O + CO2 A volume of 27.48 ± 0.05 mL of HNO3 solution was required for complete reaction with 0.8371 ± 0.0008 g of Na,CO3, (FM 105.988 0.001 g/mol). Find the molarity of the HNO solution and its absolute uncertainty Note: Significant figures are graded for this problem. To avoid rounding errors, do not round your answers until the very end of your...
The rate law for a general reaction involving reactant A is given by the equation rate = k[A]?, where rate is the rate of the reaction, k is the rate constant, [A] is the concentration of reactant A, and the exponent 2 is the order of reaction for reactant A. What is the rate constant, k, if the reaction rate at 450.°C is 1.23x10-1 mol/L.s when the concentration of A is 0.220 mol/L? 1/Mos When heated to 75°C, 1 mole...
A solution of HNO2 is standardized by reaction with pure sodium carbonate. 2 Na* H20 2H Na2C03 - CO2 A volume of 26.18 ± 0.05 mL of HNO2 solution was required for complete reaction with 0.9243 ± 0.0007 g of Na,CO3, (FM 105.988 0.001 g/mol). Find the molarity of the HNO2 solution and its absolute uncertainty Note: Significant figures are graded for this problem. To avoid rounding errors, do not round your answers until the very end of your calculations...
A solution of HNO is standardized by reaction with pure sodium carbonate 2H+ + Na,CO3-2 Na+ + H2O + CO2 A volume of 25.29 + 0.05 mL of HNO3 solution was required for complete reaction with 0.8380+0.0008 g of Na,CO3. (FN 105.988 0.001 g/mol). Find the molarity of the HNO3 solution and its absolute uncertainty. Note: Significant figures are graded for this problem. To avoid rounding errors, do not round your answers until the very end of your calculations IHNO,I-I...
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