Discuss each conclusion below from a study of redox reactions:

a) The sulfide ion functions only as a reducing agent

b) The sulfate ion functions only as an oxidizing agent

c) Sulfur dioxide functions as either an oxidizing agent or a reducing agent

Determine the pH of an HF solution of each of the following concentrations.

0.290 M

4.50x10^-2 M

2.50x10^-2 M

A student mixes 31.0 mL of 3.06 M Pb(NO3)2(aq) with 20.0 mL of 0.00193 M Na2SO4(aq). How many moles of PbSO4(s) precipitate from the resulting solution? What are the values of [Pb2 ], [SO42–], [NO3–], and [Na ] after the solution has reached equilibrium at 25 °C?

.......mol .....Ksp={PbSo4}=2.5 * 10^-8

part 2:

what are the valuse of [Pb^+2], [SO4^-2], [NO3^+] after the solution has reached equilibrium at 25 C?

You will apply the oxidation reaction to 9-fluorenol to obtain 9-fluorenone:

1. Describe the role of each chemical in this reaction.

2. What is the actual oxidizing agent in this experiment? What is it reduced to?

3.After all of the 9-flurenol has undergone reaction, it is necessary to destroy the excess oxidizing agent in the reaction mixture. How is this done?

4. Imagine that you will monitor the reaction progress by TLC. Will the product be the higher or lower spot? What is the significant difference between 9-fluorenone and 9-fluorenol that allows reaction progress to be monitored by TLC?

particles smaller than 2.5 micrometers in diameter affect human health more than do larger particles. identify 5 chemicals that you might expect to see in high concentrations in these particles in polluted air. why did u pick these chemicals?

1) A 50.0-mL volume of 0.15 M HBr is titrated with 0.25 M KOH. Calculate the pH after the addition of 11.0mL of KOH

2) A 75.0-mL volume of 0.200 M NH3 (Kb=1.8

Q: A reaction vessel is pressurized with 1.600 atm of CO2 . At equilibrium, the pressure of CO2 is 1.200 atm. What is the equilibrium constant, KP? 2 CO(g) + O2 (g) −−−− 2 CO2 (g)

Any detail to this problem solution will help to better understand, thanks.

*I have posted this problem for help already but I'm not sure if the response was correct, mostly due to the division part. My understanding is that the sum which is 2 CO2 (g) goes first on top of division the, then 2 CO(g) + O2 (g) goes on bottom of divion line.Can someone solve this problem to better understand, thanks.

ClO(aq) + 3I(aq) + H₂O(I) ------> I₃(aq) + CI(aq) + 2OH(aq) (Equation 1)

I₃(aq) + 2S₂O₃^2-(aq) -----> 3I(aq) + S₄O₆^2- (aq) (Equation 2)

IO₃^- (aq) + 8I^-(aq) + 6H⁺(aq) ----> 3I₃^-(aq) + 3H₂O(I) (Equation 3)  

Part A: To standardize a thiosulfate (S₂O₃^2-) solution, 10.00 mL of a  1.199×10⁻² MM   KIO₃ solutionare treated with excess KI to generate I₃^- according to Equation 3. How many moles of I₃^- are generated?

Part B: If  5.99 mL of the S₂O₃^2- solution are required to reach the endpoint of the titration, what is the molarity of S₂O₃^2- in the solution? (Use Equation 2.)

Part C:  2.11 g of bleach solution are treated with excess KI to generate I₃^- according to Equation 1 on page 161 in the lab manual. 27.02 mL of the standardized S₂O₃^2- solution in Part B are required to reach the endpoint of the titration. How many moles of S₂O₃^2- is this? (Use Equation 2.)

Part D: How many moles of I₃^- are involved in the reaction? (Use Equation 2.)  

Part E: How many moles of ClO^- are involved in the reaction? (Use Equation 1.)

Part F: How many moles of NaClO are involved in the reaction?

Part G: What is the mass percent of NaClO in the bleach solution? Recall, the mass of bleach used in the reaction is 2.11 g .

350. mL of a NaOH solution was added to 500. mL of 2.50 M HNO₂. The pH of the mixed solution was 1.75 units greater than that of the original acid solution. Calculate the molarity (in M) of the initial NaOH solution. (K_a of HNO₂ is 4.5x10^-4)

17. In one or two well-developed paragraphs and in your own words, explain what "hybridization" means. As part of your explanation, describe the hybridization within NH3 and CH2O.

When 0.873 g of neon is added to an 700-cm3 bulb containing a sample of argon, the total pressure of the gases is found to be 1.73atm at a temperature of 298 K .
Find the mass of the argon in the bulb.

A doctor prescribed magnesium oxide as a health supplement. Assuming that a capsule contains 400mg magnesium oxide, determine the number of unit cells of magnesium.

Predict the kind various of copolymer and polymerization mechanism of depending on the reactivity ratio of
Nitro ethylene and propylene

If fermentation did not occur during anaerobic metabolism, glycolysis would come to a screeching halt. Why?

What is the cell potential for the reaction

Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s)

at 43 ∘C when [Fe2+]= 3.10 M and [Mg2+]= 0.110 M .

E=____V