Question

In: Chemistry

Calculate the sulfide ion concentration in a saturated H2S solution when the ph is 0.5. The...

Calculate the sulfide ion concentration in a saturated H2S solution when the ph is 0.5.
The concentration of H2S in a saturated H2S solution is about 0.1 mol/L.

H2S(aq) + 2H20 (l) -----> 2H30+ (aq) + S2- (aq)

Ka = 1.1 x 10 ^-21

Solutions

Expert Solution

pH = 0.5

[H2S] = 0.1 mol/L = 0.1M

                 

Initial             0.1                                                                 0                         0

Final            (0.1 - x)                                                          (2x + 0.3010)         x


assuming 0.1 - x = 0.1 and (2x + 0.3010 = 0.3010) [ since x is very small value]

Hence the sulfide ion concentration is equal to 1.214 * 10^(-21)

queen_honey_blossom answered 8 months ago
Next > < Previous

Related Solutions

Calculate the values of the hydroxide ion concentration, pOH, and pH for a 0.20 M solution...
Calculate the values of the hydroxide ion concentration, pOH, and pH for a 0.20 M solution of ammonia
Calculate the hydronium ion concentration and the pH when 50.0ml of 0.40M NH3 is mixed with...
Calculate the hydronium ion concentration and the pH when 50.0ml of 0.40M NH3 is mixed with 50.0ml of 0.40M Hcl
Calculate the hydronium ion concentration and the pH at the equivalence point when 65.0 mL of...
Calculate the hydronium ion concentration and the pH at the equivalence point when 65.0 mL of 0.4000 M NH3 is mixed with 35.0 mL of 0.7429 M HCl. Ka=5.6x10-10
1. Calculate the hydronium ion concentration and pH for a 0.042 M solution of sodium formate,...
1. Calculate the hydronium ion concentration and pH for a 0.042 M solution of sodium formate, NaHCO2. Kb for reaction of HCO2- ion with water is 5.6 × 10-11. [H3O+]----------------M pH--------------------- 2. What are the equilibrium concentrations of NH3, NH4+, and OH- in a 0.42 M solution of ammonia? What is the pH of the solution? Kb = 1.8 * 10^-5 [OH-] ----------------------- M [NH4+] ----------------------M [NH3] ---------------------- M pH----------------------------
Calculate the hydronium ion concentration and pH for a 0.050 M solution of sodium formate, NaHCO2....
Calculate the hydronium ion concentration and pH for a 0.050 M solution of sodium formate, NaHCO2. Kb for reaction of HCO2- ion with water is 5.6 × 10-11. [H3O+] =_____ M pH =______
Calculate the hydronium ion concentration and the pH when 65.0 mL of 0.45 M NH3 is...
Calculate the hydronium ion concentration and the pH when 65.0 mL of 0.45 M NH3 is mixed with 65.0 mL of 0.45 M HCl (Ka = 5.6x10^-10). Concentration = pH=
The equilibrium concentration of hydroxide ion in a saturated cobalt(II) hydroxide solution is ...................M.
The equilibrium concentration of hydroxide ion in a saturated cobalt(II) hydroxide solution is ...................M.
1. Calculate the pH of a 0.339 M H2S. Calculate the [S2-] in the solution. 2....
1. Calculate the pH of a 0.339 M H2S. Calculate the [S2-] in the solution. 2. A titration is performed by adding 0.656 M KOH to 40 mL of 0.172 M HNO3: b) Calculate the pH after the addition of 2.1, 5.25 and 9.49 mL of the base.(Show your work in detail for one of the volumes.) e)Calculate the pH after adding 5.00 mL of KOH past the equivalence point
26. A solution of 0.075 M CoBr2 is saturated with H2S ( [H2S] = 0.10 M)....
26. A solution of 0.075 M CoBr2 is saturated with H2S ( [H2S] = 0.10 M). What is the minimum pH at which CoS ( Ksp = 5.9 x 10 -21) will precipitate? Ka1 =8.9 x 10 -8 & Ka2 = 1.2 x 10 -13 for H2S and Ksp for CoS = 5.9 x 10 -21
26. A solution of 0.075 M CoBr2 is saturated with H2S ( [H2S] = 0.10 M)....
26. A solution of 0.075 M CoBr2 is saturated with H2S ( [H2S] = 0.10 M). What is the minimum pH at which CoS ( Ksp = 5.9 x 10 -21) will precipitate? Ka1 =8.9 x 10 -8 & Ka2 = 1.2 x 10 -13 for H2S Ksp for CoS = 5.9 x 10 -21
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT