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Metal complexes Prepare a plot of log Cd2+ vs PH2S for solutions at pH 8.0 and with TOTCd = 106 M, for a range of PH2S from 106 to 103 atm. What are the concentration of the Cd-H2S species when PH2S is equal to 10-5 atm?

 

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Related questions

Ammonium bisulfide, NH4HS, forms ammonia, NH3, and hydrogen sulfide, H2S, through the reaction

NH4HS(s)?NH3(g)+H2S(g)

This reaction has a Kp value of 0.120 at 25 degrees C.

An empty 5.00-L flask is charged with 0.250 g of pure H2S(g), at 25 degrees C.

b. What is the initial pressure of H2S(g) in the flask?

Express your answer numerically in atmospheres.

Answer:

P =

3.59×10?2

 atm

c. What are the partial pressures of NH3 and H2S at equilibrium, that is, what are the values of PNH3 and PH2S, respectively?

Enter the partial pressure of ammonia followed by the partial pressure of hydrogen sulfide numerically in atmospheres separated by a comma.

d. What is the mole fraction, x, of H2S in the gas mixture at equilibrium?

e. What is the minimum mass of NH4HS that must be added to the 5.00-L flask when charged with the 0.250 g of pure H2S(g), at 25 degrees C to achieve equilibrium?


tritation of Cd2+ w/ EDTA

all but A. and D are incorrect

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