State the most-used reactions in fuel-cell technology

Assignment Help Chemistry
Reference no: EM13174734

The oxidation of hyrogen by oxygen is one of the most-used reactions in fuel-cell technology. The overall reaction, which is given below, has a (Delta)G^o value of -474 kJ/mol. What is the standard cell potential for this fuel cell?

A) 1.23 V

B) 1.50 V

C)2.46 V

D) 5.33 V

E) 4.91 V

Reference no: EM13174734

Questions Cloud

What is the molarity of the acetic acid solution : if 2.67 mL of 0.205 M KOH is required to completely neutralize 25.0mL of a CH3COOH solution, what is the molarity of the acetic acid solution?
State low enthalpy of reaction value is not spontaneous : A reaction with a low enthalpy of reaction value is not spontaneous at low temperature but becomes spontaneous at high temperature.
What is the heat evolved during the neutralization : The molar heat of neutralization from hydrochloric acid and sodium hydroxide is -57.3 kj/mol. What is the heat evolved during the neutralization of 655ml of 1.00M hydrochloric acid by 1.00M sodium hydroxide?
State copper metal is purified by electrolysis : Copper metal is purified by electrolysis. How much copper metal could be produced from copper(II) oxide by applying a current of 10.0 amps
State the most-used reactions in fuel-cell technology : The oxidation of hyrogen by oxygen is one of the most-used reactions in fuel-cell technology. The overall reaction, which is given below, has a (Delta)G^o value of -474 kJ/mol.
State does ph have an effect on the cell potential : Does pH have an effect on the cell potential (Ecell) for the following oxidation-reduction reaction? 5Fe^2+(aq) + MnO4^-(aq) + 8H^+(aq) ---> 5Fe^3+(aq) + Mn^2+(aq) + 4H20(l)
Compute the equilibrium constant of the reaction : Calculate the equilibrium constant of the reaction I2(g)52 I(g) at 1000 K from the following data for I2: # = 214.36 cm
Present value of endowment would be what : the present value of his endowment would be what? I know the answer is 2500, but I need to know HOW you get this?
Calculate the mass percent of sodium hydroxide : 19.0 g of sodium hydroxide is dissolved in 731 g of water. Calculate the mass percent of sodium hydroxide in the resulting soulution.

Reviews

Write a Review

Chemistry Questions & Answers

  How much cl2 can be produced

Chlorine gas can be produced commercially by passing an electric current through a con- centrated solution of sodium chloride (brine).

  Determine the volume occupied by .582 moles of a gas

determine the volume occupied by .582 moles of a gas at 15*C if the pressure is 622 mm Hg?

  Write balanced half-reactions and the overall spontaneous

A voltaic cell is constructed with an Ag/Ag+ half-cell and a Pb/Pb2+ half-cell. Measurement shows that the silver electrode is positive. Write balanced half-reactions and the overall spontaneous reaction.

  What is the keq value for the acid base reaction

what is the keq value for the acid base reaction between sulfuric acid and nitric acid? Assume that pka of the conjugated acid of nitric acid is -13.

  Calculate the ka of lactic acid

Lactic acid has one acidic hydrogen atom in its structure. A 0.10 M solution of lactic acid has a pH of 2.44. Calculate the Ka of lactic acid.

  Calculate the is for a gas in a closed system

Calculate the Î"S for a gas in a closed system that is an ideal monatomic gas initially at P= 5 atm, V=5L, and T = 310 K which expands to V= 10 L and its temperature is increased to 390 K

  Calculate the mole fraction of toluene

Toluene (C6H5CH3) is a liquid compound similar to benzene (C6H6). Calculate the mole fraction of toluene in the solution that contains 132 g toluene and 115 g benzene.

  What is the mass (in grams) of the sample

A sample of calcium carbonate absorbs 45.5 J of heat, upon which the temperature of the sample increases from 21.1 oC to 28.5 oC. If the specific heat of calcium carbonate is 0.82 J/g K,

  Define sodium floride

how many liters of fluoridated drinking water would a 70 kg person have to consume in one day to reach this toxic level? How many kg of sodium floride would be needed to treat a 7.49x10^6 -gal reservior?

  Explain what would you expect the measured decay rate

What would you expect the measured decay rate to be 4.00 hours later? The half-life of Ru-97 is 2.79 days.

  Explain how much energy is required to heat

How much energy (in Joules) is required to heat 10.99 g of water from 12.9 Celsius to 42.4 Celsius?

  What happens to the solution

Magnesium hydroxide is used in several antacid formulations. When it is added to water it dissociates into magnesium and hydroxide ions. Mg(OH)2(s) Mg2+(aq) + 2OH-(aq).

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd