Suppose Hydrogen Sulfide Is Added to a Solution That Is

question 69

Multiple Choice

Suppose hydrogen sulfide is added to a solution that is 0.0010 M in Fe²⁺,Cd²⁺,Co²⁺,and Mn²⁺ such that the concentration of H₂S is 0.10 M.When the pH of the solution is adjusted to 3,a precipitate forms.What is the composition of the precipitate?
H₂S(aq) + 2H₂O(l)
2H₃O⁺(aq) + S^2-(aq) ; K_c = 1.1 × 10^-20
Salt
K_sp
FeS
6) 0 × 10^-18
CdS
8) 0 × 10^-27
CoS
4) 0 × 10^-21
MnS
2) 5 × 10^-10

• A)CdS only
• B)CdS,CoS,FeS,and MnS
• C)CdS,CoS,and FeS
• D)CdS and FeS
• E)CdS and CoS

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Definitions:

Price Inelastic

Describes a situation where the quantity demanded or supplied of a good or service changes minimally in response to price changes.

Elasticity

A measure of the responsiveness of the quantity demanded or supplied of a good to a change in its price, income level, or other factors.

Elasticity of Supply

Elasticity of supply measures the responsiveness of the quantity supplied of a good or service to a change in its price.

Shifting Resources

The reallocation of resources from one use to another, often in response to changing economic conditions or priorities.