Derive a balanced equation for the reaction occurring in the cell:
Fe(s)|Fe²⁺(aq)||Fe³⁺(aq),Fe²⁺(aq)|Pt(s)

a.) If E?cell = 1.21 V, calculate ?G? for the reaction.

b.) If E?cell=1.21V, calculate the equilibrium constant for the reaction.

c.) Use the Nernst equation to determine the potential for the cell:
Fe(s)|Fe²⁺(aq,1.0�10^-3M)||Fe³⁺(aq,1.0�10^-3M),Fe²⁺(aq,0.10M)|Pt(s)

You need to make a benzoic acid-based buffer that has a ph of 5.10. The volume should be 500ml. What masses of the acid and its conjugate base should you use? (Hint: you should not go over 1M in concentration for either acid or conjugate base) Show all Work.

Part B. The pH of the above buffer solution should not go above 5.15. If 10ml of 0.1 M NaOH is added to the buffer, will the pH go past the maximum value?

Show using the C4v point group character table the orthogonality of any two irreducible representations.

Using the same point group demonstrate the property of the character table that two irreducible representations can be used to deduce the characters for another (ex combinations of the irreducible representations for px and py can be used to determine the characters for the irreducible representation of dxy)

Calculate the activity of 30 g of radium-226 in Bq and mCi. ( The half-life of radium-226 is 1600yeras.) Ci ( = 3.7 times10^10Bq)

For a weak acid, HA,

1) write the ionization reactionin water

2) write the expressio of its acid ionation constant, Ka

3)If Ka is 1.0 x 10^-6, calculate the pH of a 0.200-M Ha solution

4)What is the pH of a buffer solution with 0.35 M HA and 0.40 M A-?

1) The Ka of a monoprotic weak acid is 2.47

URGENT!! Solid carbon can react with gaseous water to form carbon monoxide gas and hydrogen gas. The equilibrium constant for the reaction at 700.0 K is Kp=1.60×10−3. Part A If a 1.55-L reaction vessel initially contains 121 mbar of water at 700.0 K in contact with excess solid carbon, find the percent by mass of hydrogen gas of the gaseous reaction mixture at equilibrium.

I've tried 4 times, I keep getting it wrong. Please show me how to do it! It is due very soon.

Three major spectroscopic methods for elemental analysis atoms are Atomic Absorption Spectroscopy, Atomic Emission Spectroscopy, and Atomic Mass Spectroscopy. Briefly describe the physics behind each of the three methods.

A) A 193.0 L sample of gas of the upper atmosphere at a pressure of 4.8 torr is compressed into a 256.0 mL container at the same temperature. What is the new pressure?

B) To what volume would the original sample have had to be compressed to reach a pressure of 7.0 atm?

one mole of ice at 0 C is turned completely into steam by heating under 1 atm pressure. calculate the entropy change in the system with specific heat capacity and enthalpy/heat values.assuming they are all constant.

Question: A reaction A + B <==> C has a standard free-...

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A reaction
A + B <==> C
has a standard free-energy change of -3.22 kj/mol at 25oC

What are the concentrations of A, B, and C at equilibrium if at the beginning of the reaction their concentrations are 0.30M, 0.40M and 0M respectively?

How would your answers above change if the reaction had a standard free-energy change of +4.88 kj/mol?
____ there would be no change to the answers.
____ All concentrations would be lower.
____ All concentrations would be higher.
____ There would be less A and B but more C.
____ There would be more A and B but less C.