Give reason for removing the dissolved oxygen in voltammetric analysis, write the reaction occurring in the...
Give reason for removing the dissolved oxygen in voltammetric analysis, write the reaction occurring in the solution, and how to remove dissolved oxygen?
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Give reason for removing the dissolved oxygen in
voltammetric analysis, write the reaction occurring in the...
I'm working on a prelab titled: Analysis of Water for Dissolved Oxygen. The question is: Calculate...
I'm working on a prelab titled: Analysis of Water for Dissolved Oxygen. The question is: Calculate the concentration in mg/L (ppm) of a solution that is 4*10^-3M in O2, assuming a density of 1g/mL for the solution. I'm not sure if I provided all of the information needed, seeing as how I don't entirely understand the question. Any help would be appreciated. Thank you.
A 1.04 g sample of KBr is dissolved in water to give 155 mL of solution....
A 1.04 g sample of KBr is dissolved in water to give 155 mL of solution. This solution is then added to 165 mL of 0.015 M aqueous Pb(NO3)2, in an attempt to remove the toxic lead(II) ions from the solution via precipitation as insoluble PbBr2(s). The precipitation reaction that occurs is: PB2+(aq) + 2Br(aq) --> PbBr2(s) What is the maximum mass of product that could be isolated by filtration after the reaction occurs?
Write a program to evaluate empirically the following strategies for removing nodes with two children: a)...
Write a program to evaluate empirically the following strategies for removing nodes with two children: a) Replace with the largest node, X, in TL and recursively remove X. b) Alternately replace with the largest node in TL and the smallest node in TR, and recursively remove the appropriate node. c) Replace with either the largest node in TL or the smallest node in TR (recursively removing the appropriate node), making the choice randomly. Which strategy seems to give the most...
A 1.04 g sample of KBr is dissolved in water to give 155 mL of solution....
A 1.04 g sample of KBr is dissolved in water to give 155 mL of
solution. This solution is then added to 165 mL of 0.015 M aqueous
Pb(NO3)2, in an attempt to remove the toxic lead(II) ions from the
solution via precipitation as insoluble PbBr2(s).
The precipitation reaction that occurs is: Pb2+ (aq) + 2 Br (aq)
---> PbBr2 (s)
At the end of the reaction, what is the concentration (in
molarity) of nitrate ions in the solution?
Note:...
7. The last redox reaction occurs when thiosulfate reacts with more dissolved oxygen to produce sulfate...
7. The last redox reaction occurs when thiosulfate reacts with more dissolved oxygen to produce sulfate ions. Balance this redox reaction assuming a basic environment. Show all of your work. [1.5 pts]
The next redox reaction occurs when elemental sulfur reacts with dissolved oxygen to produce thiosulfate, S203...
The next redox reaction occurs when elemental sulfur reacts with dissolved oxygen to produce thiosulfate, S203 Balance this redox reaction assuming a basic environment (most seawater is slightly basic). Show all work.
A method for determining the quantity of dissolved of oxygen in natural waters requires a series...
A method for determining the quantity of dissolved of oxygen in natural waters requires a series of redox reaction. Balance the following chemical equations in that series under the conditions indicated: a. In basic solution; Mn^2+(aq) + O_2(g) rightarrow MaO_2(g) b. In acidic solution; Mn^+2 O_2(s) + 2I^- rightarrow Mn^2+(aq) + I_2(s) c. In neutral solution; I_2(s) + S_2 O_3^2-(aq) rightarrow2I^-(a) + S_4O_6^2-(aq)
Q 1(a) [13.33 Marks] Levels of dissolved oxygen in water can be determined by the Winkler...
Q 1(a) [13.33 Marks] Levels of dissolved oxygen in water can be determined by the Winkler method in the Leaving Certificate Chemistry course as follows: Under alkaline conditions manganese(II) sulphate produces a white precipitate of manganese(II) hydroxide: Mn2+(aq) + 2OH-(aq) → Mn(OH)2(s) This reacts with the dissolved oxygen to produce a brown precipitate. 2Mn(OH)2(s) + O2(aq) → 2MnO(OH)2(s) Addition of concentrated H2SO4 releases free iodine from KI. MnO(OH)2(s) + 4H+(aq) + 21-(aq) + Mn2+(aq) + 12(aq) + 3H2O(1) The free...
How do you write a chemical reaction for beta-naphthol dissolved in NaOH with all of the...
How do you write a chemical reaction for beta-naphthol dissolved in NaOH with all of the spectator ions intact?
Write the balanced equation for the reaction occurring between aqueous solutions of HCl and NaOH to...
Write the balanced equation for the reaction occurring between aqueous solutions of HCl and NaOH to produce water and sodium chloride, then write the complete ionic and net ionic equations:
A 1.04 g sample of KBr is dissolved in water to give 155 mL of
solution. This solution is then added to 165 mL of 0.015 M aqueous
Pb(NO3)2, in an attempt to remove the toxic lead(II) ions from the
solution via precipitation as insoluble PbBr2(s).
The precipitation reaction that occurs is: Pb2+ (aq) + 2 Br (aq)
---> PbBr2 (s)
At the end of the reaction, what is the concentration (in
molarity) of nitrate ions in the solution?
Note:...
A method for determining the quantity of dissolved of oxygen in natural waters requires a series of redox reaction. Balance the following chemical equations in that series under the conditions indicated: a. In basic solution; Mn^2+(aq) + O_2(g) rightarrow MaO_2(g) b. In acidic solution; Mn^+2 O_2(s) + 2I^- rightarrow Mn^2+(aq) + I_2(s) c. In neutral solution; I_2(s) + S_2 O_3^2-(aq) rightarrow2I^-(a) + S_4O_6^2-(aq)
Q 1(a) [13.33 Marks] Levels of dissolved oxygen in water can be determined by the Winkler method in the Leaving Certificate Chemistry course as follows: Under alkaline conditions manganese(II) sulphate produces a white precipitate of manganese(II) hydroxide: Mn2+(aq) + 2OH-(aq) → Mn(OH)2(s) This reacts with the dissolved oxygen to produce a brown precipitate. 2Mn(OH)2(s) + O2(aq) → 2MnO(OH)2(s) Addition of concentrated H2SO4 releases free iodine from KI. MnO(OH)2(s) + 4H+(aq) + 21-(aq) + Mn2+(aq) + 12(aq) + 3H2O(1) The free...
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