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Inorganic Chemistry
Please could you calculate the partial pressure of H2S at pH7, 105 bar pressure at 30 ppm S−2
My attempt so far:
H2S+H2O↽⇀H3O++HS−
HS−+H2O↽⇀H3O++S2−
With K1=9.1×10−8 and K2=1.3×10−18 respectively
pH=7 -> [H3O+]=10−7 and 30 ppm S2− -> [S2−]=9.36×10−4
I worked out the equilibrium equation and found that [HS−]=9.36×10−4, which when plugged into the first equation implies [H2S] is also 9.36×10−4 because of the very small values of K. Is this correct so far, or have I missed something? It’s been a long time since my chemistry classes!
My attempt so far:
H2S+H2O↽⇀H3O++HS−
HS−+H2O↽⇀H3O++S2−
With K1=9.1×10−8 and K2=1.3×10−18 respectively
pH=7 -> [H3O+]=10−7 and 30 ppm S2− -> [S2−]=9.36×10−4
I worked out the equilibrium equation and found that [HS−]=9.36×10−4, which when plugged into the first equation implies [H2S] is also 9.36×10−4 because of the very small values of K. Is this correct so far, or have I missed something? It’s been a long time since my chemistry classes!
Inorganic Chemistry
Ca2+ and mg2+ ions can be precipitated by calgon to soften the hard water? True or false.
Inorganic Chemistry
Use Hess’ Law to show how the titration of acetic acid with sodium hydroxide can be expressed as the combination of two reactions: the acetic acid reacting with water, and the sodium hydroxide reacting with hydronium ion. Calculate the value of the equilibrium constant (Kc) for the reaction of acetic acid with sodium hydroxide. What is the significance of the value of Kc in this case?
E. Calculate the pH of a 0.75 M acetic acid solution, CH3COOH, Ka = 1.8 x 10–5, and compare it with the calculated pH of a 0.75 M diethylamine solution, (CH3CH2)2NH, Kb = 7.1 x 10–4. What is the ratio of the hydronium ion concentrations in each solution?
E. Calculate the pH of a 0.75 M acetic acid solution, CH3COOH, Ka = 1.8 x 10–5, and compare it with the calculated pH of a 0.75 M diethylamine solution, (CH3CH2)2NH, Kb = 7.1 x 10–4. What is the ratio of the hydronium ion concentrations in each solution?
Inorganic Chemistry
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why water maintains PH under Auto-ionization?
Inorganic Chemistry
A mixture of 2 metals is analyzed by reacting it with dioxygen to completely convert the metals to their oxides. When 3.1g of a Zn/Fe mixture is reacted it produces 4.274g of a mixture of Fe2SO3 and ZnO. What is the mass percent for each metal in the original mixture, show units and steps to final answer.
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Molecular formula of an oxide of iron in which the mass percent of iron and oxygen are 69.9 and 30.1
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How many charge clouds are there around the central atom in molecules that have the following geometry?
1.seesaw
2.square planar
3.Trigonal planar
4.Trigonal bipyramidal
5.square planar
6.T-shaped
7.Linear
1.seesaw
2.square planar
3.Trigonal planar
4.Trigonal bipyramidal
5.square planar
6.T-shaped
7.Linear
Inorganic Chemistry
How many charge clouds are there around a central atom in molecules that have the following geometry?
1.tetrahedral
2.octahedral
3.bent
4.linear
5.square pyramidal
6.Trigonal pyramidal
1.tetrahedral
2.octahedral
3.bent
4.linear
5.square pyramidal
6.Trigonal pyramidal
